PowerOFF Prevents Accidental Battery Drain.
The main issue with the Tablet has been a dead battery, not turning on and showing a battery symbol.
The condition has been associated with the Tablet been brick as it just kill itself, I will call it Suicidal Mode.
From my experience and by coincidence I have seen how a Tablet that has been off for days will turn on by itself.
Once a Tablet turns on by itself, it boots into the moboot menu and then to the default OS, Android or Recovery.
It will stay on until the battery gets depleted then it shutdown, without the user been aware of the Tablet's Suicidal Mode.
Another possible scenario is when traveling with the Tablet. Sometimes it needs to be pack or place in storage.
It only takes the power button to accidentally get press for the Tablet to boot and drain the battery.
There is no option or command in moboot to select shutdown by default when the Tablet turns on, paving the way for the Suicidal Mode to be executed.
The solution is PowerOFF, if by any means the Tablet turn on accidentally and the user is not aware it will turn off automatically preventing booting into Android or Recovery.
When to Flash PowerOFF:
When taking the Tablet on a trip or is going to be handle unsupervised.
The Tablet will not be use for a period of time or place in storage.
The user does not want the Tablet to automatically boot into Android or Recovery, but stay off.
If the Tablet is full charge and place in normal room temperature it should last approximately 6 month or more.
The following files can be flash in TWRP Recovery:
Click HERE to Download PowerOFF
1. Flash_PowerOFF.zip -- Copy uImage.PowerOFF into boot and makes it the boot default.
2. Remove_PowerOFF.zip -- Remove PowerOFF from boot and makes Recovery the boot default.
To make the Android version the boot default, re-flash the HpTp from the already flashed ROM.
There is no need to re-flash the ROM.
If the /boot partition is full and PowerOFF can not be flash or work properly then flash:
Clean_Boot_Remove_All_ROM_Boot_Files.zip
It will create a backup of /boot into the Micro SD Card.
Delete all Android boot images, freeing space to copy PowerOFF.
How PowerOFF works.
The flash file by FLINTMAN-update-TWRP-touch-data_media-SELINUX-TEST-Build_4-25-14.zip
Is modified and reduced to turn off the Tablet instead of launching TWRP.
The size of PowerOFF is 5.1MB which allows it to coexist in the boot partition with TWRP Recovery 3.2.1 and any Android boot uImage.
Many thanks @flintman for porting TWRP Recovery to the HP Touchpad that has made it possible to flash any ROM, also for all the great Android ROMs....!
I can unequivocally say I have never had any of the 4 TouchPads I have owned in the last 9 years turn on by themselves. I have never before now heard the topic discussed in any TouchPad thread or forum. If one properly packs their tablet for a trip, it should not get inadvertently turned on by the power button getting pressed while packed in your luggage. That being said, lucky you to own one that does. My question is, once your modified version of TWRP is installed, I guess that your TouchPad sits there, turns itself on and then your UImage turns it off. Then it turns on again and then it turns off. I wonder how long before your TouchPad runs out of battery sitting there turning itself on and off? Maybe you should install a battery disconnect switch instead.
So the question is, does this keep a TouchPad turned off or is it going to sit there and cycle on and off?
smithylovestouchpad said:
So the question is, does this keep a TouchPad turned off or is it going to sit there and cycle on and off?
Click to expand...
Click to collapse
The Tablet will be kept off.
Shutdown ( permanent off ) PowerOFF
Reboot ( turns off, then on )
PowerOFF is the same command used in Android and TWRP Recovery to shutdown the device.
By having PowerOFF as the default in the moboot menu, is guarantee that the Tablet will turn off automatically and prevent a battery drain when it gets turn on by accident.
A simple test:
Tablet is off, but connected by USB cable to any PC or Laptop that are also off.
Once the PC turns on, it triggers the Tablet connect to it by USB to come on. It will boot into Android or Recovery.
When the PC is turn off and the user forgets to turn off the Tablet, it will keep working until it shutdown for low battery (only in Android) in Recovery will be a total battery drain.
The Tablet can be off and connected to the wall outlet any spike in electricity will trigger the Tablet to come on.
Because is connected to the outlet it will keep charging and nothing will happen to the battery, unless for some reason it gets overheated.
But if the user does not want it to automatically boot into Android or Recovery it will always be kept OFF.
PowerOFF is like a safety option that will prevent the Tablet to be ON unattended; without the user be aware.
So if I interpret you correctly:
Shutdown ( permanent off ) PowerOFF
Reboot ( turns off, then on )
if a TouchPad with your version of TWRP in /boot, if the tablet gets turned on by accident or for some other reason that you describe, it willn be turned off. You said you have a TouchPad that turns on by itself. You did not explain why it does this. The point I am making is, if a TouchPad turns on, your TWRP will turn it off. If it turns on again, your TWRP will turn it off. So theoretically, a TouchPad could sit there turning on and off until the battery died. Am I correct? There is no permanent off, just the version of TWRP that keeps turning the TouchPad off every time it turns itself on.
I had mine do this on occasion over the years.
Mostly due to operator error. I'd power it off and then place it Power Button side down...
Also on travel I've packed 'em wrong and they would be dead when I got 'em out of my case. Again operator error...
I've also seen them just boot up on their own resting on a stand in landscape position. I attribute this to the 'gremlins' I have running around my place.
middle_road said:
I had mine do this on occasion over the years.
Mostly due to operator error. I'd power it off and then place it Power Button side down...
Also on travel I've packed 'em wrong and they would be dead when I got 'em out of my case. Again operator error...
I've also seen them just boot up on their own resting on a stand in landscape position. I attribute this to the 'gremlins' I have running around my place.
Click to expand...
Click to collapse
My question still remains if you pack your TP in your baggage resting on the power button, is this fix going to prevent your tablet from cycling on and off or are your gremlins going to have fun turning your TP on every time this fix turns it off? If that is the case, I don't see the value in putting this modified version of TWRP in /boot.
Smithy
middle_road said:
I had mine do this on occasion over the years.
Mostly due to operator error. I'd power it off and then place it Power Button side down...
I will call that, design error. The Power Button on mobile devices should be flush with the casing to prevent accidental contact.
Also on travel I've packed 'em wrong and they would be dead when I got 'em out of my case. Again operator error...
Unless the Tablet is pack in it's original cardboard box when traveling, it will be difficult to predict what it could happen. There are too many variables on traveling to define a perfect way to pack it, is unpredictable even on an airline you may not get your luggage at all.
I've also seen them just boot up on their own resting on a stand in landscape position. I attribute this to the 'gremlins' I have running around my place.
Click to expand...
Click to collapse
I have also seen by coincidence a Tablet booting up, just place flat on a table. When the Tablets are full charged and place in normal room temperature, the battery should last for about 6 months or more with no need to recharge it or getting completely drain.
Last month a couple of Tablets got full charge and place on a table. One day as I was passing by the screen turn on into moboot and then to Recovery as there was no OS installed, then I turn it off and did not give it any importance. Over two weeks ago I try to turn on the same Tablet, but nothing will happen. Place it on the wireless charger and the Home Button LED light came on moving side to side, after some time the Low Battery symbols came on and then after some hours it booted into Recovery. The other Tablet also had a drain battery but it booted into the Low Battery symbol. That is when I decided to look for a way to keep the Tablet off if by any means got turn on and PowerOFF was my solution.
I am not saying that all Tablets do turn on by themselves but some do and that can explain why some users report of dead batteries and others pull a Tablet that has been stored in a drawer for long time and still have battery remaining.
What could cause a Tablet to turn on by itself?
I do not have an answer, but only speculations.
((( Electrical spike (surge) of the battery that tricks the charging board that it got plug into a PC or charger...... )))
smithylovestouchpad said:
My question still remains if you pack your TP in your baggage resting on the power button, is this fix going to prevent your tablet from cycling on and off
By "accident" if the Power Button gets press inside the baggage, it will take less than a minute to be turn off.
For the Tablet to possibly cycle on and off repeatedly the Power Button needs to be press constantly.
If the Power Button is in constant pressure in the baggage eventually it could get damage.
or are your gremlins going to have fun turning your TP on every time this fix turns it off? If that is the case, I don't see the value in putting this modified version of TWRP in /boot.
Smithy
Click to expand...
Click to collapse
If a gremlin decides to turn on the Tablet, it will automatically turn off preventing more gremlins damage and a possible data breach.
PowerOFF is gremlin-proof, it does not provide any visual feedback to keep them entertain, they will quickly acknowledge the Tablet is already malfunctioning and not working moving on to the next mobile device " Your Smartphone"
HP_TOUCHPAD said:
If a gremlin decides to turn on the Tablet, it will automatically turn off preventing more gremlins damage and a possible data breach.
PowerOFF is gremlin-proof, it does not provide any visual feedback to keep them entertain, they will quickly acknowledge the Tablet is already malfunctioning and not working moving on to the next mobile device " Your Smartphone"
Click to expand...
Click to collapse
So you have answered my question. If someone has a TP that has a propensity to turn itself on, your modified TWRP will turn it off but not keep it turned off. So a TP could sit there, turn on, and turn off until the battery is depleted. If a TP gets turned on by accident, for whatever reason, your modified TWRP will turn it off but not keep it turned off. So a TP could sit there, turn on, and turn off until the battery is depleted.
You should be aware that your suggestion that a person should charge their TP to 100% to store it is not recommended by lithium battery manufacturers.
From PowerStream.com:
The batteries should be stored at room temperature, charged to about 30 to 50% of capacity. We recommend that the batteries be charged about once per year to prevent overdischarge.
PowerStream Note: Test data confirms that storage of lithium-ion batteries is best if the cell is partially discharged. In one test by Cadex Electronics ( http://www.buchmann.ca ) after 1 year storage at 25°C the non-recoverable capacity remaining is 96% when stored at 40% initial charge level, but only 80% if stored with 100% initial charge level. This effect is reduced at lower temperature and is a non-issue at 0°C. At higher temperatures the effect is much worse. Cadex's recommendations are to store below 15° C at 40% of full charge (3.5 volts per cell). Our experience is that with cells stored at room temperature for 3 years that the non-recoverable capacity did not decrease, so this is probably manufacturer dependent.
I also have good news for you, Middle_Road's reference to gremlins is only metaphorical. Gremlins are only mythical creatures invented to entertain readers of fantasy literature not attack your TouchPad or Smart Phone. So your devices are safe. :cyclops:
smithylovestouchpad said:
So you have answered my question. If someone has a TP that has a propensity to turn itself on, your modified TWRP will turn it off but not keep it turned off. So a TP could sit there, turn on, and turn off until the battery is depleted. If a TP gets turned on by accident, for whatever reason, your modified TWRP will turn it off but not keep it turned off. So a TP could sit there, turn on, and turn off until the battery is depleted.
You should be aware that your suggestion that a person should charge their TP to 100% to store it is not recommended by lithium battery manufacturers.
From PowerStream.com:
The batteries should be stored at room temperature, charged to about 30 to 50% of capacity. We recommend that the batteries be charged about once per year to prevent overdischarge.
PowerStream Note: Test data confirms that storage of lithium-ion batteries is best if the cell is partially discharged. In one test by Cadex Electronics ( http://www.buchmann.ca ) after 1 year storage at 25°C the non-recoverable capacity remaining is 96% when stored at 40% initial charge level, but only 80% if stored with 100% initial charge level. This effect is reduced at lower temperature and is a non-issue at 0°C. At higher temperatures the effect is much worse. Cadex's recommendations are to store below 15° C at 40% of full charge (3.5 volts per cell). Our experience is that with cells stored at room temperature for 3 years that the non-recoverable capacity did not decrease, so this is probably manufacturer dependent.
I also have good news for you, Middle_Road's reference to gremlins is only metaphorical. Gremlins are only mythical creatures invented to entertain readers of fantasy literature not attack your TouchPad or Smart Phone. So your devices are safe. :cyclops:
Click to expand...
Click to collapse
That is why, usually, your new-in-box device is only partially charged when you unpack it.
Gremlins: They weren't 'invented', they were 'created' based on real world observation and experiences.
So when something happens that can't be explained easily, the Gremlins are guilty until proven innocent.
Especially when dealing with electrons.
...
..
.
middle_road said:
That is why, usually, your new-in-box device is only partially charged when you unpack it.
Gremlins: They weren't 'invented', they were 'created' based on real world observation and experiences.
So when something happens that can't be explained easily, the Gremlins are guilty until proven innocent.
Especially when dealing with electrons.
...
..
.
Click to expand...
Click to collapse
ROTFLMAF......
My bad,
I also have good news for you, Middle_Road's reference to gremlins is only metaphorical. They were 'created' based on real world observation and experiences. So when something happens that can't be explained easily, the Gremlins are guilty until proven innocent. They will not attack your TouchPad or Smart Phone. So your devices are safe.
How's that?
smithylovestouchpad said:
So you have answered my question. If someone has a TP that has a propensity to turn itself on, your modified TWRP will turn it off but not keep it turned off.
The Tablet will be kept OFF in the same way as it gets turn off in Android, Recovery or moboot menu is all the same.
So a TP could sit there, turn on, and turn off until the battery is depleted.
There has been no reports of a Tablet "constantly" turning on by itself. That is your own theory that it has not been witness or proof, of a Tablet turning back on after just been turn off. There is a difference between "constantly" and "predisposition".
If a TP gets turned on by accident, for whatever reason, your modified TWRP will turn it off but not keep it turned off. So a TP could sit there, turn on, and turn off until the battery is depleted.
To keep any mobile device permanently off, the battery must be disconnected or removed.
Once the Tablet is off is not going to turn on right away, the Gremlin must come and do it again. Maybe you should ask them how often they are going around turning on the Tablets to prove your theory that the battery will get depleted by the use of PowerOFF.
You should be aware that your suggestion that a person should charge their TP to 100% to store it is not recommended by lithium battery manufacturers.
My suggestions comes from the user manual by HP, attached is the link and the screenshot.
It does not mentioned for storage, but constant use.
Click HERE for the HPTP User Manual
From PowerStream.com:
The batteries should be stored at room temperature, charged to about 30 to 50% of capacity. We recommend that the batteries be charged about once per year to prevent overdischarge.
PowerStream Note: Test data confirms that storage of lithium-ion batteries is best if the cell is partially discharged. In one test by Cadex Electronics ( http://www.buchmann.ca ) after 1 year storage at 25°C the non-recoverable capacity remaining is 96% when stored at 40% initial charge level, but only 80% if stored with 100% initial charge level. This effect is reduced at lower temperature and is a non-issue at 0°C. At higher temperatures the effect is much worse.
Temperature is the KEY factor, the environment must be cold and dry. Placing any Device in a regular freezer will make the battery last longer but the humidity could damage other internal components.
Cadex's recommendations are to store below 15° C at 40% of full charge (3.5 volts per cell). Our experience is that with cells stored at room temperature for 3 years that the non-recoverable capacity did not decrease, so this is probably manufacturer dependent.
I also have good news for you, Middle_Road's reference to gremlins is only metaphorical. Gremlins are only mythical creatures invented to entertain readers of fantasy literature not attack your TouchPad or Smart Phone. So your devices are safe. :cyclops:
Click to expand...
Click to collapse
I am aware of the Gremlins terminology, @middle_road already gave a great explanation !
You said: When the Tablets are full charged and place in normal room temperature, the battery should last for about 6 months or more with no need to recharge it or getting completely drain.
Lithium battery manufacturers recommend not doing that. "The batteries should be stored at room temperature, charged to about 30 to 50% of capacity. We recommend that the batteries be charged about once per year to prevent overdischarge."
SIX MONTHS is considered storing a device.
That page from the HP manual has nothing to do with putting your TP away for a long period of time such as you suggest, 6 months. It has to do with every day usage and how to make your battery last longer. If someone even plans to stop using their device for a couple of months, they should drain the battery to between 30 and 50% and then put it away.
Gads, no need to yell, easy on the caps and large fonts.
smithylovestouchpad said:
You said: When the Tablets are full charged and place in normal room temperature, the battery should last for about 6 months or more with no need to recharge it or getting completely drain.
Yes, that recommendation is based on real life usage and not base on lab test that only takes weeks or hours, complete details below.
Lithium battery manufacturers recommend not doing that. "The batteries should be stored at room temperature, charged to about 30 to 50% of capacity. We recommend that the batteries be charged about once per year to prevent overdischarge."
SIX MONTHS is considered storing a device.
My original Tablet from the fire sale has always been charge the opposite, all details below.
That page from the HP manual has nothing to do with putting your TP away for a long period of time such as you suggest, 6 months. It has to do with every day usage and how to make your battery last longer. If someone even plans to stop using their device for a couple of months, they should drain the battery to between 30 and 50% and then put it away.
Click to expand...
Click to collapse
All devices manufactures include in the manual to fully charge the battery before use and always keep it charge. It does not make any sense at any time to only charge the battery 50-80% to last longer. The device must have a completely full charge battery to get the most out of during use, is common sense.
As for storage, my real life experience has been completely different.
Charging the HP Touchad for that past 3018 days.
My original HPTP 32GB that I bought the very first day of the fire sale on August 20 of 2011 from hhgregg on 10:20 am EST. ( Receipt available )
From: Saturday, August 20, 2011 To Saturday, November 23, 2019 the day of this post it has been:
8 years, 3 months, 4 days or
99 months, 4 days or
431 weeks and 1 day or
3018 days or
72,432 hours or
4,345,920 minutes or
260,755,200 seconds.
The Tablet currently has a perfectly working WebOS, set up to tripple boot into Android (Pie) or LuneOS.
Most of the use has been done in WebOS until late 2016 and has been used as follow:
Full charge to 100 % and after some portable used, recharged to 100 % and place it away, it has always been inside the cover and charge with the regular wall charger.
By 2017 I started using Android more on another pre-owned Tablet and the original has been on a desk inside the cover. It gets fully 1005 charged and turn off.
Some times it has been more than 6 month before it gets turn to check on battery.
I do not know specifically how many times the battery got completely drained, but it did occurred maybe more than 4 times.
The following data and screenshot are of the mentioned Tablet showing the Health Status of the battery.
To get the current and proper battery capacity use this guide:
Click HERE for Novacom command list
open a command prompt or terminal on a PC with the novacom driver an enter:
novacom -t open tty://
then
battery status
to finish enter poweroff or reboot
Code:
[email protected]:~$ novacom -t open tty://
battery status
battery present
voltage: 4113840
percentage: 100
current: -861562
capacity: 6483200
] a6 version
A6 Version: HW Ver: 12, FW Ver (major): 2, FW Ver (minor): 13, Fw Ver (build): 25, Pkg Rev: 12
] poweroff
Sat Nov 23 14:57:51 2019
novacomd socket was closed prematurely
novacom: unexpected EOF from server
The App Dr. Battery in WebOS is used to check on the battery status, attached are screenshots.
The Kernel in WebOS provides all the proper information to the Apps as is the native and provides 100% support to all the hardware including the a6 battery chip.
Click HERE for Dr. Battery forum
The battery is at 93 % capacity, almost as new and according to all the battery manufactures " Lab Test" it should have been dead long time ago.
The Tablet room temperature has always been around 80 - 85 Fahrenheit ( 26 - 29 Celsius ) not the idea of 59F (15C)
It has always been kept full charge when not in use.
This has been a real life test of 3018 days, not in a Lab, an artificial control environment of charging and discharging rapidly.
From my experiences Lab test can provide certain important data but only Time and true usage is the final answer.
There is no way a manufacture can accurate test a product in a short period of time to replicate its real time life expectancy.
Only the user could provide the results after been using the product in a certain way for a prolong period of time.
It will be interesting if current users could issue the command novacom -t open tty:// battery status and report the capacity of the battery.
HP_TOUCHPAD said:
All devices manufactures include in the manual to fully charge the battery before use and always keep it charge. It does not make any sense at any time to only charge the battery 50-80% to last longer. The device must have a completely full charge battery to get the most out of during use, is common sense.
As for storage, my real life experience has been completely different.
Click to expand...
Click to collapse
Your real life experience does not supersede the manufacturer's recommendations on how to properly prepare a lithium battery for STORAGE or periods of non-use such as 6 months. Why would you choose to recommend doing something that goes completely against what the manufacturer suggests?
---------- Post added at 01:51 AM ---------- Previous post was at 01:15 AM ----------
HP_TOUCHPAD said:
My original HPTP 32GB that I bought the very first day of the fire sale on August 20 of 2011 from hhgregg on 10:20 am EST. ( Receipt available )
From: Saturday, August 20, 2011 To Saturday, November 23, 2019 the day of this post it has been:
8 years, 3 months, 4 days or
99 months, 4 days or
431 weeks and 1 day or
3018 days or
72,432 hours or
4,345,920 minutes or
260,755,200 seconds.
The Tablet currently has a perfectly working WebOS, set up to tripple boot into Android (Pie) or LuneOS.
Most of the use has been done in WebOS until late 2016 and has been used as follow:
Full charge to 100 % and after some portable used, recharged to 100 % and place it away, it has always been inside the cover and charge with the regular wall charger.
By 2017 I started using Android more on another pre-owned Tablet and the original has been on a desk inside the cover. It gets fully 1005 charged and turn off.
Some times it has been more than 6 month before it gets turn to check on battery.
I do not know specifically how many times the battery got completely drained, but it did occurred maybe more than 4 times.
The following data and screenshot are of the mentioned Tablet showing the Health Status of the battery.
To get the current and proper battery capacity use this guide:
Click HERE for Novacom command list
open a command prompt or terminal on a PC with the novacom driver an enter:
novacom -t open tty://
then
battery status
to finish enter poweroff or reboot
Code:
[email protected]:~$ novacom -t open tty://
battery status
battery present
voltage: 4113840
percentage: 100
current: -861562
capacity: 6483200
] a6 version
A6 Version: HW Ver: 12, FW Ver (major): 2, FW Ver (minor): 13, Fw Ver (build): 25, Pkg Rev: 12
] poweroff
Sat Nov 23 14:57:51 2019
novacomd socket was closed prematurely
novacom: unexpected EOF from server
The App Dr. Battery in WebOS is used to check on the battery status, attached are screenshots.
The Kernel in WebOS provides all the proper information to the Apps as is the native and provides 100% support to all the hardware including the a6 battery chip.
Click HERE for Dr. Battery forum
The battery is at 93 % capacity, almost as new and according to all the battery manufactures " Lab Test" it should have been dead long time ago.
The Tablet room temperature has always been around 80 - 85 Fahrenheit ( 26 - 29 Celsius ) not the idea of 59F (15C)
It has always been kept full charge when not in use.
This has been a real life test of 3018 days, not in a Lab, an artificial control environment of charging and discharging rapidly.
From my experiences Lab test can provide certain important data but only Time and true usage is the final answer.
There is no way a manufacture can accurate test a product in a short period of time to replicate its real time life expectancy.
Only the user could provide the results after been using the product in a certain way for a prolong period of time.
It will be interesting if current users could issue the command novacom -t open tty:// battery status and report the capacity of the battery.
Click to expand...
Click to collapse
Can't believe you would waste all this time and effort to thumb your nose in the face of what the companies that manufacture these batteries recommend. Any smart person would choose to believe what they recommend rather than you.
We haven't even touched on what the current philosophy concerning the charging of lithium batteries is today. It's called the 40/80 rule. Try not to discharge your battery below 40% and stop charging when it reaches 80%. This helps give you maximum battery life.
https://www.csmonitor.com/Technology/Tech/2014/0103/40-80-rule-New-tip-for-extending-battery-life
Just like the recommendation to set the charge to around 50% to store a lithium battery, the 40/80 rule for charging is just a recommendation if you want to get the maximum life from your battery. But I suppose you will take issue with that too since it does not fall into your real life experience.
---------- Post added at 02:08 AM ---------- Previous post was at 01:51 AM ----------
middle_road said:
Gads, no need to yell, easy on the caps and large fonts.
Click to expand...
Click to collapse
Sometimes one has to speak a little louder to get through to someone who does not listen very well. And he is definitely hard of hearing when it suits him. His inability to accept real facts as presented it typical for him. He lives in his own distorted reality that does not mesh with the rest of the world. Sad
Look at his response to what I said. What alternate reality is he living in?
smithylovestouchpad said:
Your real life experience does not supersede the manufacturer's recommendations on how to properly prepare a lithium battery for STORAGE or periods of non-use such as 6 months. Why would you choose to recommend doing something that goes completely against what the manufacturer suggests?
Post the link from the battery manufacture that HP outsourced and place it in the Tablet, that state what you have read from other sources that do not produce any batteries at all.
Technically the battery in the Tablet is a Lithium Polymer and was made by Amperex Technology Limited, this is the web site of the real manufacture.
https://www.atlbattery.com/en/index.html
Attached are all the parts and the manufactures.
Click to expand...
Click to collapse
Can't believe you would waste all this time and effort to thumb your nose in the face of what the companies that manufacture these batteries recommend. Any smart person would choose to believe what they recommend rather than you.
I have provided the screenshots, proof or real test of over 8 years. Post the link of a test that was conducted for that long.
We haven't even touched on what the current philosophy concerning the charging of lithium batteries is today. It's called the 40/80 rule. Try not to discharge your battery below 40% and stop charging when it reaches 80%. This helps give you maximum battery life.
The controller (chip) is programed by the device manufacture in this case by HP to take that into consideration. When the battery is showing 100 % charge is not using the full capacity of the battery. That is why HP and all other device manufactures states to fully charge the device before use, it does not say 80 %.
Show me in any manual where it says to charge at only 80 %.
https://www.csmonitor.com/Technology/Tech/2014/0103/40-80-rule-New-tip-for-extending-battery-life
Just like the recommendation to set the charge to around 50% to store a lithium battery, the 40/80 rule for charging is just a recommendation if you want to get the maximum life from your battery. But I suppose you will take issue with that too since it does not fall into your real life experience.
You got to learn the meaning of many words beginning with " recommendation ".
---------- Post added at 02:08 AM ---------- Previous post was at 01:51 AM ----------
Sometimes one has to speak a little louder to get through to someone who does not listen very well. And he is definitely hard of hearing when it suits him. His inability to accept real facts as presented it typical for him. He lives in his own distorted reality that does not mesh with the rest of the world. Sad
Look at his response to what I said. What alternate reality is he living in?[/QUOTE]
I provided my real facts, I am not repeating general information that does not apply specifically to the Tablet.
Prove me wrong and post a screenshot of your Tablet showing the capacity available using:
novacom -t open tty://
battery status
"Technically the battery in the Tablet is a Lithium Polymer"
I never said it wasn't.
"I provided my real facts, I am not repeating general information that does not apply specifically to the Tablet."
Any information from reputable sources about lithium batteries applies to the battery in the TouchPad.
"Show me in any manual where it says to charge at only 80 %."
I never said it was in any manual, I said it was the current philosophy concerning the charging of lithium batteries. Where did you learn to read?
"I have provided the screenshots, proof or real test of over 8 years. "
8 years of screen shots does not supersede the recommendations of legitimate sources of information about charging lithium batteries.
"Prove me wrong and post a screenshot of your Tablet showing the capacity available"
Why would I want to do that? I know exactly how my battery is doing using Battery Monitor Widget.
Related
I got an replacement due to my phone beyond repair.
I'm running original stock firmware, of-course rooted. Since the replacement I'm trying to get my phone to full charge but it doesn't and also I notice that the charging is quite slow.
I installed "Battery Monitor Widget" to see how much power it is drawing and found that AC power draws only about 350+mA and sometimes it is as low as 8mA. (Some times it draws about 750+mA). I notice that the temperature also reaches somewhere about 45 to 48 degree.
Once it reaches about 90% or so, it starts to drain battery instead of charing it.
I find it quite abnormal. Anyone with this kind of problem and found an solution?
Thanks in advance for the replies and suggestions.
What I'd sudjest is updating your phone through seus or PC companion or if your an American at & t user update to a newer firmware through the flash tool (you can find I link to it through my signiture) or if you can't update try and use the repair option through seus or PC compainion.
Sent from my X10 using XDA Premium App
The Gingerbread Man said:
What I'd sudjest is updating your phone through seus or PC companion or if your an American at & t user update to a newer firmware through the flash tool (you can find I link to it through my signiture) or if you can't update try and use the repair option through seus or PC compainion.
Sent from my X10 using XDA Premium App
Click to expand...
Click to collapse
Thanks for your reply.
I did that yesterday. I repaired the firmware and reloaded all the application one by one from scratch. The only thing I restored is contacts so that I could eliminate all the other factors which can cause this issue.
My other suggestion would be to install xrecovery and wipe your battery stats I guess. You can find a link to xrecovery through the link in my sig
Sent from my X10 using XDA Premium App
The Gingerbread Man said:
My other suggestion would be to install xrecovery and wipe your battery stats I guess. You can find a link to xrecovery through the link in my sig
Sent from my X10 using XDA Premium App
Click to expand...
Click to collapse
Thanks once again for the reply.
I tired that too every time I try to charge the phone. Still it refuses to complete the charging.
Any other suggestions are welcome.
What about off line charging ie; turning the phone off and doing that way?
Sent from my X10 using XDA Premium App
The Gingerbread Man said:
My other suggestion would be to install xrecovery and wipe your battery stats I guess. You can find a link to xrecovery through the link in my sig
Sent from my X10 using XDA Premium App
Click to expand...
Click to collapse
+1 it helped me off this problem
Sent from my X10i using XDA App
The Gingerbread Man said:
What about off line charging ie; turning the phone off and doing that way?
Sent from my X10 using XDA Premium App
Click to expand...
Click to collapse
Good idea. I will try that as well as try to do a clean wipe and just try to charge with nothing loaded in. That will give a better idea where the problem is.
Thanks for the great tip, I will update you tomorrow.
Had that happen before, I had to remove sim card and let it drain out slowly for a week, then charge. Problem solved
I think I had similar problem, except that my processor went on full load when its almost fully charged causing it to drain the battery instead. Still lookin for answer to that, will wiping battery stats help?
I reset my phone to factory and did a re-flashing again using SEUS and I tried it charging immediately without loading any application (only loaded Battery Monitor Widget from Market to see the battery temperature and mA units drawn) and wow, it charged like a normal X10. So I guess it has something to do with whatever I loaded or modded it with.
I'm trying to find it out. Later tonight I will try to load all the application one-by-one and try again to charge to see whether I can isolate it.
During this process, I did takeout my SIM card for a period of 1 hour or so, so not sure whether that did the trick (If that's the case, thanks to gogogu)
In the meantime, I have a strong feeling it would be due to the flashtool and new recovery, but again there isn't any proof. I suspect this because this is the new thing I did compared to my old phone.
Any thoughts are welcome.
Monitor the CPU usage as well
zymphonyx said:
Monitor the CPU usage as well
Click to expand...
Click to collapse
I don't have issues with processor. It works at full throttle when it supposed to work and then goes back to normal.
Hrmmm alright, but if you ever had the draining issue while charging and the battery temp rises up again. Check the CPU usage just incase
After yesterday's event, seems like stable (I did face the same issue once). Not sure which cured it and currently monitoring...
EDIT: Back to square one. The issue started again and the battery refues to fully charge! I'm going mad
Finally given up, sent for service and came back after 5 days of repair.
Repair Notes: No problem found !!!
But today morning I tried to charge and it's the same issue . Makes me go mad. Really, I don't know what to do!
Please help me friends .......
I too have exactly the same problem with my x10i.....
tried everything like rooting, using stock & custom ROMs, etc... still problem persist ...
while charging , power goes from 900mA to 200mA or lower, & doesn't reach 100% full...
i use current widget from market to read the power values ....
please help me friends .... to resolve my problem ...
Thanks a lot...
Makzer.
nobody replying
hello mates...
please reply to my problem dear friends ..
looking forward ...
LiveSquare said:
I got an replacement due to my phone beyond repair.
I'm running original stock firmware, of-course rooted. Since the replacement I'm trying to get my phone to full charge but it doesn't and also I notice that the charging is quite slow.
I installed "Battery Monitor Widget" to see how much power it is drawing and found that AC power draws only about 350+mA and sometimes it is as low as 8mA. (Some times it draws about 750+mA). I notice that the temperature also reaches somewhere about 45 to 48 degree.
Once it reaches about 90% or so, it starts to drain battery instead of charing it.
I find it quite abnormal. Anyone with this kind of problem and found an solution?
Thanks in advance for the replies and suggestions.
Click to expand...
Click to collapse
What program do you use to check your battery temperature. I rememeber there was one that wass bettery draining. The same is also possible with battery level monitor
Sent from X10
Use this tool forum.xda-developers.com/showthread.php?t=1415600
Please read this. There is a lot of batt info on xda just search
http://forum.xda-developers.com/showthread.php?t=871051
I realize that much of this is common knowledge on XDA. Still, every day I see people post about how their phone "loses" 10% as soon as it comes off the charger. I also have friends who can't understand why their battery drains so quickly. Trying to explain this to people without hard numbers is often met with doubt, so I figured that I'd actually plot it out with real data.
So it's not a piece that is optimized for this audience, but I hope that you find it interesting.
--------------------------------------------------
Your Smartphone is Lying to You
(and it's not such a bad thing)
Climbing out of bed, about to start your day, you unplug your new smartphone from its wall charger and quickly check your email. You've left it plugged in overnight, and the battery gauge shows 100%. After a quick shower, you remember that you forgot to send your client a file last night. You pick up your phone again, but the battery gauge now reads 90%. A 10% drop in 10 minutes? The phone must be defective, right?
A common complaint about today's smartphones is their short battery life compared to older cell phones. Years ago, if you accidentally left your charger at home, your phone could still make it through a weeklong vacation with life to spare (I did it more than once). With the newest phones on the market, you might be lucky enough to make it through a weekend.
And why should we expect anything else? Phones used to have a very short list of features: make and receive phone calls. Today we use them for email, web surfing, GPS navigation, photos, video, games, and a host of other tasks. They used to sport tiny displays, while we now have giant touch screens with bright and vibrant colors. All of these features come at a cost: large energy requirements.
Interestingly enough, improvements in battery management technology have compounded the average user's perception of this problem. Older phones were rather inelegant in their charging behavior; usually filling the battery to capacity and then switching to a trickle current to maintain the highest charge possible. This offered the highest usage time in the short-term, but was damaging the battery over the course of ownership. As explained at Battery University, "The time at which the battery stays at [maximum charge] should be as short as possible. Prolonged high voltage promotes corrosion, especially at elevated temperatures."[1]
This is why many new phones will "lose" up to 10% within a few minutes of coming off the charger. The reality is that the battery was only at 100% capacity for a brief moment, after which the battery management system allowed it to slowly dip down to around 90%. Leaving the phone plugged in overnight does not make a difference: the phone only uses the wall current to maintain a partial charge state.
To monitor this, I installed CurrentWidget on my HTC ADR6300 (Droid Incredible), an app that can log how much electric current is being drawn from the battery or received from the charger. Setting it to record log entries every 10 seconds, I have collected a few days worth of data. While many variables are involved (phone hardware, ROM, kernel, etc) and no two devices will perform exactly the same, the trends that I will describe are becoming more common in new phones. This is not just isolated to a single platform or a single manufacturer.
Chart 1 shows system reported battery levels over the course of one night, with the phone plugged in to a charger. Notice that as the battery level approaches 100%, the charging current gradually decreases. After a full charge is reached, wall current is cut completely, with the phone switching back to the battery for all of its power. It isn't until about two hours later that you can see the phone starts receiving wall current again, and even then it is only in brief bursts.
The steep drop in reported battery seen past the 6.5 hour mark shows the phone being unplugged. While the current draw does increase at this point (since the phone is being used), it still cannot account for the reported 6% depletion in 3 minutes. It should also be obvious that maintaining a 100% charge state is impossible given the long spans in which the phone is only operating on battery power.
Using the data from CurrentWidget, however, it is quite easy to project the actual battery state. Starting with the assumption that the first battery percentage reading is accurate, each subsequent point is calculated based on mA draw and time. Chart 2 includes this projection.
Now we can see that the 6% drop after unplugging is simply the battery gauge catching up with reality.
The phone manufacturers essentially have three choices:
1. Use older charging styles which actually maintain a full battery, thereby decreasing its eventual life
2. Use new charging methods and have an accurate battery gauge
3. Use new charging methods and have the inaccurate battery gauge
Option one has clearly fallen out of favor as it prematurely wears devices. Option two, while being honest, would most likely be met with many complaints. After all, how many people want to see their phone draining down to 90% while it is still plugged in? Option three therefore offers an odd compromise. Maybe phone companies think that users will be less likely to worry about a quick drop off the charger than they will worry about a "defective" charger that doesn't keep their phone at 100% while plugged in.
Bump It. Or Should You?
One technique that has gained popularity in the user community is "bump charging." To bump charge a device, turn it off completely, and plug it into a charger. Wait until the indicator light shows a full charge (on the ADR6300, for example, the charging LED changes from amber to green) but do not yet turn the device back on. Instead, disconnect and immediately reconnect the power cord. The device will now accept more charge before saying it is full. This disconnect/reconnect process can be repeated multiple times, each time squeezing just a little bit more into the battery. Does it work?
The following chart plots battery depletion after the device has received a hefty bump charge (6 cycles) and then turned on to use battery power. Note that the system does not show the battery dropping from 100% until well over an hour of unplugged use, at which point it starts to steadily decline. Again, however, it should be obvious that the battery gauge is not syncing up with reality. How could the rate of depletion be increasing over the first 5 hours while the rate of current draw is relatively steady? And why does the projected battery line separate from the reported levels, but then exactly mirror the later rises and falls?
The answer, of course, is that bump charging definitely works. Rather than anchoring our projected values to the first data point of 100%, what happens if we anchor against a later point in the plot?
Aligning the data suggests that a heavy bump charge increases initial capacity by approximately 15%. Note that the only other time that the lines separate in this graph was once again when the phone was put on the charger and topped up to 100%. Just as with the first set of graphs, the phone kept reporting 100% until it was unplugged, dropped rapidly, and again caught up with our projections.
So what does it all mean?
If you absolutely need the highest capacity on a device like this, you will need to bump charge. There are currently people experimenting with "fixes" for this, but I have yet to see one that works. Be warned, however, that repeated bump charging will wear your battery faster and begin to reduce its capacity. If you are a "power user" who will buy a new battery a few months from now anyway, this presumably isn't a concern. If you are an average consumer who uses a device for a few years, I would recommend that you stay away from bump charging. The bottom line is that you don't really "need" to do it unless you are actually depleting your battery to 0% on a regular basis.
If you are someone who can top off your phone on a regular basis, do it. Plug it in when you're at home. Plug it in when you're at your desk. As explained by Battery University, "Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory."[2]
Beyond that, the best advice I can offer is to stop paying such close attention to your battery gauge and to just use your phone. Charge it whenever you can, and then stop obsessing over the exact numbers. If you really need more usage time, buy an extended-capacity battery and use it normally.
From my XPERIA X10S v8.2 on JaBKerneL @ 1.15ghz
I use my Gtablet all day and I always shut it off and turn it back on ( boot it up) and ofcourse that takes 2 minutes or so.
Will it do any harm (or kill battery etc) if I leave the Gtablet on all the time like a pc ( maybe re-booting once a week or so) and just hit the power button to shut the screen off. Just dont want to kill my device by leaving it on all day and night. Just curious if anyone does this and if theres any harm to the device.
Thanks.
It will drain battery faster, so you will have to charge it more. That will probably reduce the life of the battery as well, since it will have more cycles.
I do the same as you, turn it on when I first use it and shut it down at night. No reason to drain a battery overnight, IMO.
Forgot to add that I leave it plugged in and charging all the time until I use . But yeah I guess turning it on at night and shutting off before bed is not a bad idea.
Thank you.
I've been confused by this situation, becuase when I first got mine, I made the opposite comment and was made too look like an idiot.
There was a post a while ago regarding how to get better battey life. People were complaining that their G-Tablet would lose too much battery life when left in sleep at night (not plugged in) I made the comment "Why not just turn it off?" and people responded with "Because it's a tablet."
Having NO IDEA what they meant, I asked what they were taloking about. Basically they explained to me that a tablet should be treated as a cellphone, not a computer. "You don't turn your phone off at night, do you?" was one question asked of me.
I'm still lost, becuase frankly, I think that they were just being stupid. The tablet IS more like a computer than a phone, as far as battery drain goes. I'd be in a world of trouble if my battery only had a 10 hour drain while in standby.
SO, I turn it off, and leave it plugged in at night. I use it all day, then plug it in (while on) in the evening so that I can access it if needed. Then, before bed, I turn it off, and just let it charge all night. occasionally, I will leave it plugged in an on at night. I figured that's what I do with my cell phone too, right?
Leave it on, all the time.
My wife and I both leave ours on, all the time (well she has too because it will not boot once turned off unless I nvflash it). There is no reason to turn it off unless you have to have longer than a day for battery life and are opposed to charging it every day.
I take it off the charger at 7:00am when I leave for work and then put it back on the charger later that night. Depending on how much I used it (were lots of apps updated, did I run another titanium backup, etc...) determines if I need to plug in earlier or not.
My wife leaves hers on the dock and takes it off to use, then places it back when done.
To help with battery life though you can set the screen timeout to a low time...so once you stop using it....the screen will timeout quickly and put the tablet to sleep.
Here is my very uninformed opinion on this debate.
The PC is designed for you to turn it off when you're not using it. The phone/tablet is designed to be on all the time and just be put to sleep when you're not using it.
The first sign of this is the OS itself. In windows and mac platform, once a program is running it will continue to run and run and run like that annoying rabbit until you stop it. And if you leave those programs running in the background they will do nothing but eat up your memory. What you then have to do every once in a while is to reboot.
In fact, back in the first gulf war there was an incident where a computer controlling the anti-missile defense system of a base was left on too long. They kept leaving it on because they were worried about incoming missiles. When the real missiles came flying, the system had already used up all its memory and made inaccurate calculations to counter. I think a few people died as a result. The incident could have been prevented if they had rebooted the computer. I remember reading about it back then.
Anyway, android is designed for your phone, which is meant to be on literally all the time. Especially with froyo and up, there are built-in systems to shut down running apps that aren't being used. Memory cycles also act differently so you don't run out of memory the way you do with PC.
Another thing is there is such a thing as turning it on and off too much. A significant determination of the lifetime of your electronic devices is how many times you turn it on and off. Not only that, The lifetime of your battery (how many cycles of charges you can have) also depends on the age more so than the actual number of times you recharge it.
You can very easily experiment with this by buying a brand new camera battery and just let it sit there. After a couple years, even though you've barely used it, you could only get less than an hour (sometimes even much less) even though when you bought it it's suppose to last your camera a whole 3 hours with a full charge.
That said, I'm running calkulin+clemsyn combo with cpu master setting the speed to 1.0 ghz most of the time. It's only when I want to impress people do I put it up to 1.5 ghz. I've tried both methods. For a couple weeks, I would turn it off every night and on every morning. Then for the next couple weeks I've been keeping it on all the time and only putting it to sleep while docked at night.
And I know this is only anecdotal evidence and is perhaps meaningless in science (I'm a researcher) but the gtab appears to be working a lot smoother and better when left on all the time.
Just my 2 cents.
It's a tablet, by design it suppose be turned on and be ready to use in no time at all when you fancy to dig up internet or watch movie, netflix etc.
The one way to achieve such readiness is to never shut it down. But from other hand, why waste energy when not in use.
So, here we go with "sleep" mode which is by the way implemented in Android 2.2 and 2.3 very poorly (in comparison with iOS). gTablet with Froyo, GB would typically loose 0.9-1.5% of charge per hour "sleeping" and then again there might be runaway apps which stuck in endless loop and will kill your battery in no time.
I've tried lot's of things and nothing can bring down discharge rate in "sleep" mode less then numbers above. So, I just keep my gtablet charging overnight.
Sometimes I just shut it down. Especially, when I found the way to speed-up cold start from 2 min. previously down to 40 sec.
Thanks all very informative and appreciate all the opinions.
I turn my gtab off at night but charge it only when necessary. I never use it while plugged in. I don't see the parallel between gtab & cell phone since I've not missed a call on gtab
My tablet is never turned off, unless the battery dies.
Part of the whole point of the tablet paradigm is the instant-on/instant-off concept. Remember, putting it to sleep uses very minimal amounts of power. Most functions go into standby, its a lot more than just "screen off". If I don't use the tablet much during the day, it can easily last until the next before having to charge again. Putting it into airplane mode and leaving it on all night will probably not consume that much more power than booting it up again in the morning (remember, when the CPU is being used it consumes more energy. Booting up is intense, sleeping is not).
Heck, I heard HP was considering leaving out the ability to power off their WebOS tablet (coming from the world of Palm, where many devices did not have the ability to shut down completely).
Stop comparing it to a computer- they aren't exactly phones, think of them as something more like a giant PDA. The same way you didn't have to shut down your old Palm Pilot throughout the day- imagine waiting for it to boot up each time you wanted to quickly check your calendar! The idea was to quickly turn on, do something and turn off. That's what a tablet is supposed to be.
Seems most here are bringing personal preference/philosophy into this. The question is what was best for the tablet. So, I looked it up...
The biggest factor is the battery, of course. gTabs have Li-ion polymer batteries. Here's a decent synopsis:
Li-ion and Li-ion polymer: Used on a lot of newer devices, has no "memory" effect, should be recharged as often as possible, actually likes to be charged and draining it regularly can cause the usage time to be shortened, can NEVER be overcharged so whenever you're near a charger put it on there. Besides those benefits a li-ion battery is lighter and smaller but the chemical can hold more charge than Ni-cad and Ni-mh.
So the one reply to your question said to error on the side of draining the li-ion batteries. This is incorrect information. You want to charge the battery before it gets below a 20% charge. Also batteries will not go bad from accidentally doing the incorrect charging procedure here and there but normally follow the correct procedure.
Click to expand...
Click to collapse
http://forums.cnet.com/7723-7590_102-115543.html
Yes, I remember 5-6 years ago, there was a whole movement about li-on and polymer batteries (which are VERY different, btw) being charged as often as possible.
My theory is that this was started by battery manufacturers, as every person I know who followed this philosophy needed to replace their batteries during the useful life of the product (be it cell phone, laptop, etc).
The general theory (and the one I have had success with), is to NOT plug it in unless you are ready to charge it 100%. How often you charge doesn't matter, however do not disconnect a battery if it is in the middle of being charged.
But aside from all this, I thought the question was how is the G-Tablet supposed to be used.
The answer is, like a tablet. Not like a computer. If the G-tablet can't be used the way a tablet is supposed to be used, its not a very good tablet then, is it?
TarheelGrad1998 said:
Seems most here are bringing personal preference/philosophy into this. The question is what was best for the tablet. So, I looked it up...
The biggest factor is the battery, of course. gTabs have Li-ion polymer batteries. Here's a decent synopsis:
http://forums.cnet.com/7723-7590_102-115543.html
Click to expand...
Click to collapse
I thought the biggest question was the effect of powering off on the tablet's battery and internal memory/performance.
Charging aside, what effect does turning it off regularly have on the device?
TJEvans said:
I thought the biggest question was the effect of powering off on the tablet's battery and internal memory/performance.
Charging aside, what effect does turning it off regularly have on the device?
Click to expand...
Click to collapse
Powering off? Should really have no effect on battery life in the long run. The cons are that you have to wait for it to boot back up again which takes substantial power and time.
Dishe said:
Powering off? Should really have no effect on battery life in the long run. The cons are that you have to wait for it to boot back up again which takes substantial power and time.
Click to expand...
Click to collapse
When I don't have enough time to wait for my Gtab to boot up, I'll get into a new line of work - oh that's right I'm retired
buchaneer.nl said:
When I don't have enough time to wait for my Gtab to boot up, I'll get into a new line of work - oh that's right I'm retired
Click to expand...
Click to collapse
And you're modding an android device? Wow...
Sorry, I'm just too used to people from your generation not being able to find the 'any' key. No offense intended. My elderly dad belongs to your generation. And so is my g/f's mom.
goodintentions said:
And you're modding an android device? Wow...
Sorry, I'm just too used to people from your generation not being able to find the 'any' key. No offense intended. My elderly dad belongs to your generation. And so is my g/f's mom.
Click to expand...
Click to collapse
...!!
Good grief, even I'm offended!
On behalf of the rest of the forum, I would like to apologize for goodintentions.
Meanwhile, buchaneer.nl, part of the philosophy of the tablet concept is that it is supposed to be always on. Otherwise, if you intend to use it like a computer a netbook is an infinitely more functional tool for the same money. No hacking about to enable Skype, Netflix, Hulu, you get full office and a keyboard, etc. They are just different paradigms and designed for different uses.
A tablet is supposed to be casual use. Turn it on, turn off. Hold it. charge it when it beeps. Repeat.
Dishe said:
...!!
Good grief, even I'm offended!
On behalf of the rest of the forum, I would like to apologize for goodintentions.
Click to expand...
Click to collapse
Why is that offensive? I'm sure when I get past the BIG 30 I will find it hard to operate the new neural interface devices and the star trek transporter-like technology.
When I was in college, one of my engineering professors was 90 years old and could write programs in like 50 languages. So, I'm well aware that not everyone from that generation is tech illiterate. That said, a very large number are. It's a fact.
TJEvans said:
I thought the biggest question was the effect of powering off on the tablet's battery and internal memory/performance.
Charging aside, what effect does turning it off regularly have on the device?
Click to expand...
Click to collapse
The question was, is it better to turn it off, or does it do harm to leave it on all the time. The answer is it doesn't matter, so long as you perform proper charging of the battery.
As has been said, this is not like a computer, which has hard disks drives which wear out from spinning (and thus, reboots take a toll on the device). So rebooting does no harm, other than impatience for waiting.
And I guess as part of the over 30 crowd, I remember when booting a computer took FOREVER. So to me, booting the gTablet is nothing. I leave it on if I know I'll be using it in the near future, but otherwise, I turn it off.
Interesting article on Rootzwiki:
Wiping Battery Stats is Pointless, Says Google Jan 13 2012 09:30 PM | Ashley Glenn in Articles
Over time wiping battery stats has become a regular ritual among the Android enthusiast community. Buy a new battery? Wipe your battery stats! Upgrade to a bigger battery? Wipe your battery stats! Change kernels or restore a nandroid backup? You know what to do: wipe battery stats! But this ritual may soon become a thing of the past thanks to Google engineer Dianne Hackborn, who sheds a light on the subject that puts the tightly-held practice of wiping battery stats in the same league as carrying a lucky rabbit's foot or throwing a pinch of spilled salt over your shoulder.
Recommending that users wipe their battery stats appears in so many places and as a cure for so many ills that it has become ubiquitous. Adherents to this practice will sit and wait for their phones to report a full charge, then use an app that deletes the batterystats.bin file or reboot into recovery mode and wipe it from there. This supposedly cures a number of ills such as battery scaling issues, poor battery percentage reporting, and any of a myriad other number of issues. The truth is, according to Android Framework Engineer Dianne Hackborn, that this file is a repository for information about system activity and that it actually takes care of itself without the need for user intervention. From Dianne's post:
Quote
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away.
It really can't be put more straightforward than that, folks. So rest assured next time you put a new battery in or flash a new kernel or restore an old backup that all you have to do to help your phone or tablet play nice with its battery is charge it to 100% and do nothing else. It really is that simple. But don't worry, enthusiasts - you'll find plenty of other reasons to hang out in recovery anyway.
Know of a sweet app, trick, mod, or hack for your Android device? Send us a tip! [email protected]
Sent from my MB870 using xda premium
This is interesting, so Google engineering will incorporate it into new OTA's? Or does this mean I've wasted time while flashing countless Roms?
Pixelation said:
This is interesting, so Google engineering will incorporate it into new OTA's? Or does this mean I've wasted time while flashing countless Roms?
Click to expand...
Click to collapse
I'm reading this as we've been wasting time.
Sent from my MB870 using xda premium
Not wasting time flashing countless roms. Just wasting time wiping battery stats. That's the way it looks to me. Personally, I've always thought wiping battery stats was nothing but a whole lot of voodoo. Never had the need for it, don't see why anybody else would either. Let the flames begin.
I knew it couldn't possibly have an effect on actual battery life, but I thought maybe the file collected information about the length of the battery to calibrate the meter (because let's face it, with the X2 battery bug it's pretty clear that it doesn't get the value directly from the battery).
Funny thing about calibrating when it gets to 100 though...if there truly is something wrong with the meter, why would you suddenly trust it to know when it's charged? This is why I'd always charge it for a little extra and go by the voltage meter.
So basically, I've seen a couple of different readings. I've always waited past 100% and in different ROMs I've seen 4192, 4196, 4198, & 4200 mah.
I use the extended battery, sooooo readings may vary between regular battery.
Pixelation said:
So basically, I've seen a couple of different readings. I've always waited past 100% and in different ROMs I've seen 4192, 4196, 4198, & 4200 mah.
I use the extended battery, sooooo readings may vary between regular battery.
Click to expand...
Click to collapse
I have an extended battery as well. Actually, I have two extended batteries and two regular batteries. Got the first one with my droid X, then a faulty extended battery (bad batch where the meter doesn't read right), then a replacement extended battery, then the one that came with my X2. No two are the same, but they should all max out near 4200 mV.
Edit: I use one extended battery.
Ok this screen is after install of CM 7 tonight, it reads 4205 mah, so why is it different, with different Roms?
Weird isn't it?
Pixelation said:
Edit: I use one extended battery.
Ok this screen is after install of CM 7 tonight, it reads 4205 mah, so why is it different, with different Roms?
Weird isn't it?
Click to expand...
Click to collapse
The stats can easily drift if you don't flash ROMs with your phone at 100% battery, hence why sometimes the calibration is needed [be sure to wipe stats when at 100% [either via app or recovery], best thing to do is fully discharge battery until auto off occurs and then fully charge with AC Wall Adapter and charge only screen, then when it hits 100% wait a few min, restart to OS to be sure it also says 100% [if not wait until it does and wait about 20 min longer] then restart to recovery and flash away [you could also wipe battery stats as part of flash if you do as stated before flashing]. I usually set it up so I fully discharge the phone [restarting to be sure a couple to few times] and then charge with phone off and charge only screen overnight and flash my ROM first thing in the morning right before I unplug it and unplug once I reach the point I am ready to restart device and do initial boot after flashing. Further details below...
Basically charge to 100% [or as absolutely close as you can get it [AC Wall charger is best unless you REALLY are forced to do it via USB and is best to charge via the charge only screen [phone is powered off and not booted in to the OS and all you normally see is just a battery filling on screen [and is fastest way to charge battery]]. Wait an additional 20 - 30 min after it registers 100% [this is to be sure the battery is absolutely topped off essentially] and I will generally do a restart as sometimes the battery may come back to less than 100% on a restart if your phone is not judging the battery right and is in need of calibration. If it does not register after restart wait until it hits 100% and wait the additional 20 min [you can cut out the initial 20 min wait if you want to do the restart to verify just wait the 20 min once you feel sure battery is as topped off as you can get it], then after wiping restart from recovery and unplug. Now be sure to drain the battery until auto shutoff [either stream media if in a hurry or through general usage. Either way wait until auto shut off.]. I usually will power the device back on and be sure it is not going to get back to the OS [if it even gets to boot logo I wait a few seconds and power it on again to be sure all I get is the boot vibrate on my device [some don't have this, but usually it's tablets almost all phones [and definitely both Motorola and Samsung do this]. I then charge it to full [again AC wall charger recommended as above and again with charge only, but as stated if you cant live with phone off or whatever you can do it with OS running as well. You are free to go as you wish after this second full charge really though if you do a couple more [dont have to be insane] it can help ensure the statistics get a good start.
As I believe I stated above the best way to avoid calibration as long as possible is to charge phone to 100% via phone off screen [with AC Adapter and wait the extra 20 min after it registers full before you flash [I will sometimes take it a step further, leave it plugged in while flashing my install zips and then once I go to restart system for the initial boot after ROM flash I will unplug the charger from the phone.
Hope this helps
My Nook is 10.5 months old and I have recently noticed it only hold charge for 2-3 hours.
I am still running 1.40 and rooted so I could block OTA. I haven't done any other modifications to the tablet.
Is this a common problem? I need to charge this thing everyday now, where before I could go several days without recharge.
Thanks for the help.
Steve
sgschwend said:
My Nook is 10.5 months old and I have recently noticed it only hold charge for 2-3 hours.
I am still running 1.40 and rooted so I could block OTA. I haven't done any other modifications to the tablet.
Is this a common problem? I need to charge this thing everyday now, where before I could go several days without recharge.
Thanks for the help.
Steve
Click to expand...
Click to collapse
haven't used stock in a long time, but is there an option to turn wifi off when the tablet goes to sleep? ur wifi might be sucking up power continuously if it doesn't shut off.
Yes, that is correct, Wifi can be switch off. And I have done that. But the drain has become very significant.
I am considering going for a warranty repair, but my guess I will get a refurb with another weak battery, and hassled because I have rooted and blocked OTA.
Are most folks just running off their chargers?
If folks have bad batteries are they replacing them themselves?
sgschwend said:
Yes, that is correct, Wifi can be switch off. And I have done that. But the drain has become very significant.
I am considering going for a warranty repair, but my guess I will get a refurb with another weak battery, and hassled because I have rooted and blocked OTA.
Are most folks just running off their chargers?
If folks have bad batteries are they replacing them themselves?
Click to expand...
Click to collapse
you can attempt to request for a new nook tablet placement. After two refurbished replacements with the same problem as my original NT. they sent me a new Nook Tablet and so far so good. It's worth a shot.
Came off the island today and went to the big green city. Stopped at BN and did some talking with them and also to the service center at the same time. The service center said they would send me a refurb. My 3-4hour of run time is way under the 11.5 hours you should get for the e-reader mode only. That fella felt like the battery developes memory and needed to be fully discarded to combat that occurring. I can not find any technical document that supports this idea. There are not NiCad batteries.
Anyway if I send my tablet in I will end up with 1.4.3 instead of 1.4.0.
When you get your replacement
Once you get your replacement, it's a good idea not to charge it until it show very low percentage on any nicad rechargeable batteries. When you charge it, don't remove it from the charger until it reaches 100%. Also don't have a habit of plugin it in when finish using it, plan ahead so that you can have a fully discharge battery before recharging. Your NT battery charge will hold a lot longer threw time if you do it this way. You also can try this app to see if it works.
sgschwend said:
Came off the island today and went to the big green city. Stopped at BN and did some talking with them and also to the service center at the same time. The service center said they would send me a refurb. My 3-4hour of run time is way under the 11.5 hours you should get for the e-reader mode only. That fella felt like the battery developes memory and needed to be fully discarded to combat that occurring. I can not find any technical document that supports this idea. There are not NiCad batteries.
Anyway if I send my tablet in I will end up with 1.4.3 instead of 1.4.0.
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Click to collapse
Good advise, thanks,
I put in some effort to side load the battery stats reset software and found a application call: Battery HD. I loaded this app instead. It provides a graph of the charge and discharge rate. From the graph I can see that my battery is OK. I became aware of some funnies going on when I woke up at 3 am and saw the display on. With the discharge rate as specified I now believe I have some application causing me trouble. I don't have much on the table, Titanium, MX video, Amazon apps.
I shut the unit off last night and it came back right to the same charge. Tonight I will leave it on and check the graph to see if there was an load and when. The application has a gross report on the power used separated by function instead of application. It also has a calibration test that tests the three main functions and reports the discharge rate.
Anyway, I will post what the nightly current hog is if I can find it.
Steve
sgschwend said:
Good advise, thanks,
I put in some effort to side load the battery stats reset software and found a application call: Battery HD. I loaded this app instead. It provides a graph of the charge and discharge rate. From the graph I can see that my battery is OK. I became aware of some funnies going on when I woke up at 3 am and saw the display on. With the discharge rate as specified I now believe I have some application causing me trouble. I don't have much on the table, Titanium, MX video, Amazon apps.
I shut the unit off last night and it came back right to the same charge. Tonight I will leave it on and check the graph to see if there was an load and when. The application has a gross report on the power used separated by function instead of application. It also has a calibration test that tests the three main functions and reports the discharge rate.
Anyway, I will post what the nightly current hog is if I can find it.
Steve
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Click to collapse
My friends NT has been having issue with screen turning on by itself. Seemed to narrow it down to aldiko app. Not sure why it's happening. Performed a clean install of CM7 and issue came back. I keep thinking it's hardware related, trying to convince him to try a different ROM, but he's stuck on using CM7. If you find a reason for your tablet screen turning on let us know so maybe I can help him get his issue resolved. Thanks...
Sent from my AT100 using xda premium
Vector2nds said:
Once you get your replacement, it's a good idea not to charge it until it show very low percentage on any nicad rechargeable batteries. When you charge it, don't remove it from the charger until it reaches 100%. Also don't have a habit of plugin it in when finish using it, plan ahead so that you can have a fully discharge battery before recharging. Your NT battery charge will hold a lot longer threw time if you do it this way. You also can try this app to see if it works.
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Click to collapse
That's actually bad advice for any lithium based battery - like the NT's lithium ion battery. LiON batteries don't like to be fully discharged and they don't like heat, especially heat when they are fully charged. That means avoid full discharges and avoid charging it to full every time, and do charge the battery more frequently (keeping the charge level between 20% and 80% for example). Partial discharge on LiON is just fine; they don't suffer memory effect.
Sent from my GT-I9100 using xda premium
Yeaper
rete said:
That's actually bad advice for any lithium based battery - like the NT's lithium ion battery. LiON batteries don't like to be fully discharged and they don't like heat, especially heat when they are fully charged. That means avoid full discharges and avoid charging it to full every time, and do charge the battery more frequently (keeping the charge level between 20% and 80% for example). Partial discharge on LiON is just fine; they don't suffer memory effect.
Sent from my GT-I9100 using xda premium
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I have said it in past post, I need glasses. I totally missed this part while reading "There are not NiCad batteries" the word not always gets me.Sorry about that sgschwend. I did not even know, thanks for the info update.
Well, I always appreciate advice, my view is that it becomes a starting point and it is up to the reader to combine it with a working course of action.
As to phantom startup/turnons I checked last night and there wasn't one. I will continue till I find it. The summary screen does say what type of application is turning on so that should help. The only gotcha will be if the battery application changes how the tablet works to the point that the issue will not occur. I don't think this is very likely.
The battery application (battery HD) makes a nice graph so you can look at the slope and see what is going on, it also lists the run time for various activities based on the current battery charge. Interesting to note the Nook charger overcharges a bit and the battery does warm up some. When it cools down the charge is just under 100%. This is not an ideal situation, it would be better for the charger to slow to a point that the battery temperature is not elevated near the end of its cycle. Splitting hairs perhaps. My discharge rate matches the tablets specs even with the battery application running.
Second day of monitoring the device operated correctly. I did check and found that I have a Titanium backup batch job setup to run every day a 3 am. Which coincides with time I observed the device display turning on. I will move the time and see if the issue moves too.
Steve
Also turn off push notifications that certain apps have. They suck up a lot of battery. Install the Better Battery Stats app (search xda for it). Won't have to pay unless you want to. Monitor the partial wake locks to determine what apps are using battery during sleep.
I have a similar problem, i got a nook with cm7 and the battery doesn't last at all, i charged it yesterday and let it all night without touching it to see how long would it last and after 12 hours i got 30% and it says 70% of the battery was drained by the andoid os, it says that the processor was working for 2hrs!
i got it and stared looking for an answer to this problem and in less than 10 min it has drained 4% of the total charge, this didn't happened with the stock firmware so I'm thinking about trying jelly bean and if it doesn't get better i will have to go back to the stock firmware
Hwong, I think you hit it on the head. Last evening my NookT had a much higher current draw, loosing 20% in 12 hours. I saw this when I checked it a midnight. I had left the Nook with the battery monitor application in the graph mode, likely running as an active application instead of a "monitor" mode. Titanium Backup did run last night but it runs for such a short period it did not even show up on the graph.
So I really don't know which application or notification is causing me a problem but the issue I have had is like loosing 20% of my battery in a 6-8 hour period. Which to me looks like an application is running that shouldn't and the time I observed the screen on would do it too. As I started this post I am still on 1.4.0, rooted, OTA blocked with hidden commands.
I did a hard factory reset and wipped the caché, now my nook has been charged for 2 days on sleep mode with the wifi on.
I believe the problem was caused by an application, i believe it was the launcher and theme i was used, i re-installed it yesterday and the tablet started to drain battery quickly again so i cleaned the data used by them and uninstalled them.
The battery monitor widget use to say my battery would last 2 hrs of video playing, now it says it should last 8:30, closer to the 9hrs promissed by B&N.
It all about old sins. I found that I was jumping around in the normal Nook UI and not using the back button. So several things were still running in the background. Even though that little darling looks the same, that background stuff is a killer. I did a quick test with the battery monitor by leaving it in the graphic mode and sure enough the discharge rate went up 400%, just a dumb graph in the background plotting Voltage versus time. When I use the back button on the application graph, the current draws goes to near zero.
It really does a nice job of standby or sleep.
Maybe this will help.
You could use titanium backup to freeze the apps that you think could be causing more than usual battery drain and maybe narrow the issue down?:fingers-crossed:
sgschwend said:
It all about old sins. I found that I was jumping around in the normal Nook UI and not using the back button. So several things were still running in the background. Even though that little darling looks the same, that background stuff is a killer. I did a quick test with the battery monitor by leaving it in the graphic mode and sure enough the discharge rate went up 400%, just a dumb graph in the background plotting Voltage versus time. When I use the back button on the application graph, the current draws goes to near zero.
It really does a nice job of standby or sleep.
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Click to collapse
With credit to VR-25 from Github:
If you edit these files and put you own values in then your phone will start charging when it drops below 75% and stop when it gets to 80%. (put your own values in, etc.)
I have only tested it briefly but it seems to work for AC and USB charging for me so far. No other apps or tweaks needed.
/sys/devices/platform/google,charger/charge_start_level:75
/sys/devices/platform/google,charger/charge_stop_level:80
EDIT: You need to be rooted to do this, and you need to reapply the settings after reboot.
I have a Tasker action that does this automatically 5 minutes after rebooting.
If only there was a way to use that without root :-S
What would be the purpose for this.
I always charged to a 100% and never had issues on my devices.
I use the adaptive charging overnight and think that will help with battery life.
vandyman said:
What would be the purpose for this.
I always charged to a 100% and never had issues on my devices.
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Click to collapse
If you do some reading you will see that charging over 80% and draining under 20% will significantly shorten the lifespan of your battery. This is important for those of us that have devices not sold in our country so getting replacement batteries would be very difficult and expensive. I have phones that are more than 9 years old and still going fine if charged like this.
Galaxea said:
If you do some reading you will see that charging over 80% and draining under 20% will significantly shorten the lifespan of your battery. This is important for those of us that have devices not sold in our country so getting replacement batteries would be very difficult and expensive. I have phones that are more than 9 years old and still going fine if charged like this.
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If you would have read the correct information on this subject. You would know that this not true for today's battery technology.
This is nothing but a myth.
You will have a better chance looking for Bigfoot.
Why waste 40% of your battery use....
vandyman said:
If you would have read the correct information on this subject. You would know that this not true for today's battery technology.
This is nothing but a myth.
You will have a better chance looking for Bigfoot.
Why waste 40% of your battery use....
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Click to collapse
On the contrary. The most recent phones attempt to limit the time that they spend at 100% exactly because it's so bad for battery longevity. Having options like the OP's approach just gives users more flexibility, should they want more control than, in this case, Google's adaptive/AI approach.
And it's not 'wasting' 40% of the battery. Keeping between 80% and 20% just optimizes battery service life during those days you only actually only need 60% of it's possible capacity. When working from home that's often the case for me. I actually tend to use ~30% of the battery in a day. Better to charge it up daily to about 70% than all the way to 100% and let it go down to 10% over 3 days. If it's easy to do, why not?
Not quite the same, but EV design also has their batteries normally operating in the middle range so as not to compromise their service life...
Definitely not myth. The only myth is that lithium cells exhibit a memory effect and need to be deep discharged and fully recharged periodically to maintain their capacity. It's actually bad for them to do this! The only reason to do this would be in an attempt to recalibrate the software for the battery level gauge (at the cost of a little damage to the battery each time you do that).
vandyman said:
What would be the purpose for this.
I always charged to a 100% and never had issues on my devices.
Click to expand...
Click to collapse
Most folk don't notice reduction in battery capacity until it becomes severe. For example, a friend claimed it wasn't a problem charging his iPhone to 100% ritually. When he checked the OS, it said his battery capacity was 80% of what it was when new. He said he hadn't noticed it affect how long the phone lasted.
If your usage is such that you can predict how much capacity you need, you can choose to charge to 100% only those times you will actually need that capacity. Other times you can look after the battery so it's able to actually give near on 100% for longer, those times it's important to you.
Others who keep their phones a short time or are comfortable with the cost & inconvenience of a battery replacement, or simply don't care, don't have to worry....
WibblyW said:
On the contrary. The most recent phones attempt to limit the time that they spend at 100% exactly because it's so bad for battery longevity. Having options like the OP's approach just gives users more flexibility, should they want more control than, in this case, Google's adaptive/AI approach.
And it's not 'wasting' 40% of the battery. Keeping between 80% and 20% just optimizes battery service life during those days you only actually only need 60% of it's possible capacity. When working from home that's often the case for me. I actually tend to use ~30% of the battery in a day. Better to charge it up daily to about 70% than all the way to 100% and let it go down to 10% over 3 days. If it's easy to do, why not?
Not quite the same, but EV design also has their batteries normally operating in the middle range so as not to compromise their service life...
Definitely not myth. The only myth is that lithium cells exhibit a memory effect and need to be deep discharged and fully recharged periodically to maintain their capacity. It's actually bad for them to do this! The only reason to do this would be in an attempt to recalibrate the software for the battery level gauge (at the cost of a little damage to the battery each time you do that).
Click to expand...
Click to collapse
This all maybe good if you are planning on keeping your device for a few years.
Most people buy a new device every other year. If not once a year.
... and if you really want to knacker the battery, heat it up too!
Worst case scenario - using a sat nav app on your phone in the car on a hot day with the phone plugged into a car adaptor. It's going to be sitting there at elevated temperatures, possibly with the sun shining on it, whilst being kept at 100% battery....
I'm only a customer (and have no other affiliation) and like to tinker, so I got one of these for use in the car to limit temperature when charging and limit max charge. Not cheap, but ok compared with the cost of the phone https://chargie.org/
I'm sorry, but at the snails pace this phone charges I'd be very surprised if charging it to 100% every night will make any noticeable difference in the long run. I had a Xiaomi Mi10 Ultra with 120W fast charger. That phone used to charge from 0% to full in like 20 minutes. Now that's one way to quickly kill your battery.
The Pixel uses your alarm to adaptively charge the battery so it should never overcharge it anyway. I'd much rather us all of my battery than use it only between 20 and 80% just for it to last a little longer.
The files are overwritten on reboot so I created a Tasker task to write the values on reboot each time.
Biggenz said:
I'm sorry, but at the snails pace this phone charges I'd be very surprised if charging it to 100% every night will make any noticeable difference in the long run.
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Click to collapse
On what basis? All the research and tests are based on charge level not charge rate. Fast charging potentially just makes it worse...
But at the end of the day it's your phone. You'll charge it in whatever way works for you.
I feel like this post sort of misses the point. It clearly is aimed at those intending to keep their phones >1yr, it is stated explicitly.
I'm not rooted right now, so I've been using the AccuBattery app. One of the things it does it gives a notification every few minutes when the battery is at 80% or above so that you can physically unplug the phone from the charger. Obviously having this done automatically would be better, but I've been surprised at how well the notifications have worked in my case. Plus, I can always leave the phone plugged in if I know I need a full battery for some reason (ie a long day away from any charging source).
Galaxea said:
With credit to VR-25 from Github:
If you edit these files and put you own values in then your phone will start charging when it drops below 75% and stop when it gets to 80%. (put your own values in, etc.)
I have only tested it briefly but it seems to work for AC and USB charging for me so far. No other apps or tweaks needed.
/sys/devices/platform/google,charger/charge_start_level:75
/sys/devices/platform/google,charger/charge_stop_level:80
Click to expand...
Click to collapse
Dumb question but what did you use to write values into those files? Did you use a text editor (with root access) or just termux or something? I tried with the built in MiX text editor but it seems to choke once I open up the file.
Gibsonflyingv said:
Dumb question but what did you use to write values into those files? Did you use a text editor (with root access) or just termux or something? I tried with the built in MiX text editor but it seems to choke once I open up the file.
Click to expand...
Click to collapse
I used FX File Explorer (root option). Look for the #. SYSTEM (Root).
I was wondering if changing the file permissions after writing to them to read-only would make the changes stick, but I am sure the OS could still overwrite them...??
I wonder if there's a similar variable to tweak at what temperature the phone considers the battery is too hot and stops charging?
Galaxea said:
With credit to VR-25 from Github:
If you edit these files and put you own values in then your phone will start charging when it drops below 75% and stop when it gets to 80%. (put your own values in, etc.)
I have only tested it briefly but it seems to work for AC and USB charging for me so far. No other apps or tweaks needed.
/sys/devices/platform/google,charger/charge_start_level:75
/sys/devices/platform/google,charger/charge_stop_level:80
Click to expand...
Click to collapse
Did a bit of testing and it works fine. A few things I noticed:
1. Doesn't survive reboot. Now that I've set up MiX with pinned folders, I can make the change in seconds. Need to sit down and read through the acc documentation because AccA doesn't work. Would love to have an automatic solution. Miss my old Battery Charge Limit.
2. charge_start doesn't seem to matter. After all, if charge_start is set to 75 and the phone is at 70%, it shouldn't charge. But it does. I've kept mine at 0.
3. Point #2 is kinda beside the point, though, because charge_stop will stop at the set value and stay there. No noticeable increase in temperature from what I can see. Definitely less than when charging.
4. Still shows as charging rapidly when it hits the level. Is it rapidly cycling charging on and off? Or in a kind of micro-current state? Or this may be a true battery idle situation where all power is drawn from the adapter. Ampere and AccA just show "not charging".
Edit: With a bit of use today, it does seem to act like a normal min/max charge deal, so I set it at 75 start/76 stop. Not sure what was happening at first...maybe something to do with the adaptive charging since I still have that on. Either, way, no complaints. With my use case working from home, I have it plugged in most of the day and it'll only take me about a minute to change charge_stop to 100 when I'm planning to go out all day somewhere away from chargers. Not ideal, but still a big improvement. Changes my rating of the thing from maybe 3.5 stars to 4.5.