[Q] Battery percentage reading incorrect - new OEM battery - Atrix 4G Q&A, Help & Troubleshooting

I recently ordered two new OEM batteries for my Atrix 4G, equivalent to the battery I was replacing – at least they appear that way. When I installed the new battery, my battery indicator was showing that the phone was at 15% after only a few hours. I charged a couple of times with the same problem occurring, I tried the second battery. When the same thing happened, I decided just to let it die all the way and charge fully after. My battery level hit 1% and stayed that way for hours and hours of use. When I timed the battery life, it was actually very good and it appeared the battery meter was just reading wrong.
I tried several full discharge and recharge cycles and tried disconnecting the battery while the phone was plugged in until the ‘?’ battery appeared and reinstalled it. The same problem occurred again and again. Next, I rooted the phone and tried the battery recalibration app. Results were the same. I have followed this up with discharging and recharging the battery fully several times but the problem still remains.
I have now installed an app that reads the voltage on the battery. It reads ~4200mV when plugged in and fully charged. It will discharge to somewhere between 3200mV and 3300mV before the phone shuts off and it takes upwards of 30 hours for this to happen. This has proved to be a somewhat effective way to actually estimate my remaining battery but it is still driving me nuts that the meter is off. Is there anything I can do?
Thanks for your help!

try this http://forum.xda-developers.com/showthread.php?t=1832470

barry_ said:
try this http://forum.xda-developers.com/showthread.php?t=1832470
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Click to collapse
Thanks for the reply. I installed the app a couple of days ago. I have tried the first option "Run the Fix" a couple of times, once with the battery stating it was at 100% while plugged in and once in the middle of the day while not plugged in. It has not seemed to do anything from what I can tell.
I have not run the second option to Fix battd yet because I had to figure out how to install Busybox, which I have now done. I will try that option tonight and report back.
Thanks.

You should also read about the purpose of the app and how to use it. It is all in the OP of that thread. There is no point in running the fix just whenever you feel like it, it is meant to be run only right after the battery is done charging. Running it any other time will most likely just mess up the stats/percentage even more (not irreversibly though).

ravilov said:
You should also read about the purpose of the app and how to use it. It is all in the OP of that thread. There is no point in running the fix just whenever you feel like it, it is meant to be run only right after the battery is done charging. Running it any other time will most likely just mess up the stats/percentage even more (not irreversibly though).
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Click to collapse
I did "run the fix" when my battery was fully charged overnight and rebooted the phone. I used the phone for a couple of days and it did not improve the situation. Last night I charged to 100% again and did the "fix battd" option. Today, there has been no improvement in the meter. I will try charging to 100% again tonight and try the force calibration option with the "run the fix". Is there any other way I should try to run it?
It will always charge right up to 100% and 4200 mV, the problem is the percentage will drop rapidly once unplugged all the way down to 1%. Once it hits 1% it will stay there and I can keep using the phone through the rest of the day and even overnight and into the next day before it actually powers itself down.

Yeah, I've heard of a few other people having the same issue. Sadly the battery fix app isn't going to help in your case - I don't really know what will, I'm not sure if there is a fix. Try searching the forum, this has definitely been mentioned more than once.

Hi. I just started using the Atrix today. I flashed the official ICS leak. But strangely, my battery meter isn't going above 50%. Can i use the app (from the link given above) to solve the issue>?
thanks.

Dunno. Why don't you try and see for yourself?
BTW I don't think running the leaked ROM as a daily driver is a good idea at all, especially if you only just started using this phone...

ravilov said:
Dunno. Why don't you try and see for yourself?
BTW I don't think running the leaked ROM as a daily driver is a good idea at all, especially if you only just started using this phone...
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Oh ok. I will try it for a couple of days and see. So far, it is amazing. Fast, responsive, very very little lag. Just this battery thing is a little weird. BTW, it did go ahead of 50%...i hope it doesnt fall really fast.
And I have a NeXus 4 as my main phone. My office gives me one phone, hence the Atrix.

ravilov said:
Yeah, I've heard of a few other people having the same issue. Sadly the battery fix app isn't going to help in your case - I don't really know what will, I'm not sure if there is a fix. Try searching the forum, this has definitely been mentioned more than once.
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Click to collapse
I have done some research and have found that this has been a common issue for users of the Droid X. There are two revisions of the BH6X battery, SNN5880A and SNN5893A. Many users of the Droid X purchasing the 5893 revision of the battery report having the exact same problem I am having. They have solved it by using the older 5880 revision. They suspected that the 5893 was made for the Atrix and the 5880 for the Droid.
The problem is, I have the newer 5893 revision on both new batteries which, according to that info, should work for my phone. I do not have my original battery that I was replacing with me at the moment but I can check that model number tomorrow night. I only found one other thread where a person had this issue with the Atrix here. There is no real answer on how to solve or work around the problem though and I am not having any luck finding others with this issue.
Is there any way to adjust the battery meter settings or simply hide the stock meter? I apologize if this is a dumb question.

Problem solved:
I tried the batteries in my girlfriend's Atrix and experienced the same problems. Convinced it was an issue with the battery itself, I contacted Motorola through live chat and explained the situation. After talking about (some of) the various troubleshooting steps I had taken, they told me they would send me a new battery. The battery came and has been working perfectly for the last week with the percentage showing accurately.
The two bad batteries I had were manufactured 04/08/11 and 04/12/11. The new one they sent was manufactured sometime in April 2012. Perhaps a bad batch of batteries was produced by Motorola. That would explain why Droid X owners believed that the battery was incompatible with their phones. The talk that the battery was incompatible started shortly after those batteries were produced (it looks like around August 2011), and mixed in there are reports of the SNN5893A working in the Droid X for some. Hopefully this info is helpful to others.
Thanks again to everyone who took the time to offer help.

Related

Inaccurate battery% ALWAYS

Regardless of any calibration method i try, i can never get an accurate battery reading. (Before i continue, ill point out that every app ive used to check my battery health has said "good")
Ive tried calibrating with/without the calibration app. Ive tried just deleting the batterystats via rootexplorer. ive tried calibrating before/after cycling. nothing seems to work.
the reason i know its not working, is because i will calibrate/cycle. lets say ill start a day with 100%. ill unplug my phone, leave for work, and use my phone moderately to feel out the battery drain. then at some point, ill plug it into my charger at work......just now, for example, after three hours of use my phone went from 100%-71%....i went to charge it, and once i plugged it in my percentage display changed from 71% to 63%!!! my percentage will constantly jump up and down throughout the day when i plug/unplug my phone.
anyone else experience this?
PS - its not ROM or kernel, its been happening to me for the last 2-3 months...ive flashed several roms/kernels in that timespan, and have ODINed at least once.
PPS - Ill also add that when i unplug my phone to start my day (after its been charging all night), it will stay at 100% for about 30-45min, at which point it will then start draining on an average of 1%/10min. i feel this may have something to do with it.....does it have something to do with me calibrating at too high of a voltage??
Well as for your inaccurate battery readings, i would suggest that you to odin back to stock and. Leave the phone to charge for 4hours(the time my phone takes to charge from 0-100%)then use the battery calibration app or wipe battery stats via cwm. And as for the draining it might be corrected after you calibrate it.
I know this coz I have experienced this in the past and i'd lose around 1% every 20-25mins now.
Sent from my SGH-T959 using XDA App
stanton93 said:
Well as for your inaccurate battery readings, i would suggest that you to odin back to stock and then use the battery calibration app or wipe battery stats via cwm. And as for the draining it might be corrected after you calibrate it.
I know this coz I have experienced this in the past and i'd lose around 1% every 20-25mins now.
Sent from my SGH-T959 using XDA App
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please read OP
UPDATE: i just rebooted my phone at 56%....it booted up and it displayed 24%......wtf is this
You said you've ODIN'd like once.... dude, if you aren't going to be cool with suggestions, esp the most obvious ones, not sure what it is you expect from us.
Should I hit thanks? JK
Call T-Mo and tell them and get a new battery.... they WILL give you one.
the best way to calibrate ur phone and its worked perfect for me. Charge it to 100% and then unplug it and as soon as unplug it go to sgs tools and run apply script and inside apply script there is delete battery stats. Click on that and it will take less then 10 sec and ur battery will be running great. Now this works great on my phone i hope it works on urs nicely.
At your PPS: This is completely normal and expected battery behaviour. It SHOULD happen. Here is why
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Please read this article fully to understand why it happens and why it SHOULD happen. As for your plug/unplug deviations...I have seen those but it has rarely been more than 2-3% difference which is around the normal range. It sounds like a bad calibration issue to me but then again I can't be sure, especially if you said you have done a calibration correctly. You can try a new battery like the poster above me suggests.
s15274n said:
You said you've ODIN'd like once.... dude, if you aren't going to be cool with suggestions, esp the most obvious ones, not sure what it is you expect from us.
Should I hit thanks? JK
Call T-Mo and tell them and get a new battery.... they WILL give you one.
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Click to collapse
So if i clearly state in the OP that it was happening to me before and after ive ODINed, and someone says you should ODIN...thats not a lazy suggestion?
or if someone says to try calibrating, when I stated several times in the OP that ive tried multiple calibration methods...thats not a lazy suggestion?
What i expect is if ive pointed out that ive already taken troubleshooting steps, then dont suggest those troubleshooting steps. no one is forcing a response, so if you dont know, simply dont answer. dont just read the title, skim the post, and give programmed suggestions.
theres absolutely nothing wrong with trying to seek out answers other than the conventional ones. ODIN and reflash are the laziest responses......granted, they will often fix problems, but there may be other ways to solve certain issues.
The goal of my OP was to see if anyone else had experienced it, and if someone responded affirmatively, i would ask them about their calibration methods and we could brainstorm. I would much rather seek out problem-solving knowledge before resorting to ODIN/reflash/new battery/new device...which teach nothing.
movieaddict said:
the best way to calibrate ur phone and its worked perfect for me. Charge it to 100% and then unplug it and as soon as unplug it go to sgs tools and run apply script and inside apply script there is delete battery stats. Click on that and it will take less then 10 sec and ur battery will be running great. Now this works great on my phone i hope it works on urs nicely.
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Click to collapse
This is typically the method i use. i usually let it charge for an hour or so beyond when it reaches 100%, just to ensure i have a full charge. this has not worked for me. i also take it a step further and let my phone discharge all the way until it dies, let it charge overnight when powered off, then ill wipe the battery stats first thing when i wake up.
}{Alienz}{ said:
At your PPS: This is completely normal and expected battery behaviour. It SHOULD happen. Here is why
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Please read this article fully to understand why it happens and why it SHOULD happen. As for your plug/unplug deviations...I have seen those but it has rarely been more than 2-3% difference which is around the normal range. It sounds like a bad calibration issue to me but then again I can't be sure, especially if you said you have done a calibration correctly. You can try a new battery like the poster above me suggests.
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i will definitely read this...this is something ive always been very curious about
}{Alienz}{ said:
At your PPS: This is completely normal and expected battery behaviour. It SHOULD happen. Here is why
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Please read this article fully to understand why it happens and why it SHOULD happen. As for your plug/unplug deviations...I have seen those but it has rarely been more than 2-3% difference which is around the normal range. It sounds like a bad calibration issue to me but then again I can't be sure, especially if you said you have done a calibration correctly. You can try a new battery like the poster above me suggests.
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Click to collapse
this was an extremely informative read. it doesnt shed light on all of my problems...but it definitely explains the longer battery life upon unplugging in the morning. my only question is how am i getting that extra juice when im not actually "bump charging"...i just plug it in when i go to bed, and unplug it when i wake up.....maybe my phone doesnt stop sucking in a charge the moment it hits 100%?
i agree with what he says about not paying too much attention to your battery.....but when its bouncing up and down by 20% increments, thats cause for concern haha. im going to calibrate one more time tonight, and i i get similar results i will swap batteries with another vibrant user.
do you guys suggest deep cycling, before or after wiping battery stats? (or should i just wipe stats at a full charge, and not deep cycle at all) >>> there seems to be different opinions on deep cycling throughout XDA
I have had a similar issue. After flashing Roms, plyugging and unplugging it was jumping by a good 10-15%. This turned out to be a simple bad calibration. Normal jumping should be up to 2%, more than that usually indicates bad calibration. Granted, normally nowdays, mine does not jump at all.
I recommend cycling it fully empty. That means, go ahead and drain to 0. Then let it shut off. Then turn it on again. Keep turning it on till it STOPs being able to turn on. Then charge it completely. Don't charge overnight as that will charge to 90-95% as the article suggested. Charge it while you're awake so you see when it hits 100%. It's even preffered if you charged it while the phone is off. After it hits 100%, give it another hour on the charger. You can even bump charge to ensure it hits full charge. To bump charge, after it's full, disconnect and reconnect the charger every 20 minutes for that last hour you're charging. Then unplug it, boot into recovery using the 3 buttons. Wipe the battery stats from there. Boot normally into your ROM. See if it is still jumping by 20%. Worst case scenario should be a 5% jump. Let us know what happens.
^ See, there is my confusion... there is a great example of how to calibrate, but the OP seems to get in a tiffy for offering up a suggestion he has done (calibrating). I'd also be cautious about the bump charging as that will really hurt the battery. I'm not one to try and get something for free, but why not just get a new battery?
s15274n said:
^ See, there is my confusion... there is a great example of how to calibrate, but the OP seems to get in a tiffy for offering up a suggestion he has done (calibrating). I'd also be cautious about the bump charging as that will really hurt the battery. I'm not one to try and get something for free, but why not just get a new battery?
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Click to collapse
I support the new battery notion too. It's FREE.
Drain your phone til its dead.... charge it up full.... run a battery calibration app on the market and let it die fully again then charge to 100 percent one last time... good to go!
You might even try using a differnet battery
TopShelf10 said:
Regardless of any calibration method i try, i can never get an accurate battery reading. (Before i continue, ill point out that every app ive used to check my battery health has said "good")
Ive tried calibrating with/without the calibration app. Ive tried just deleting the batterystats via rootexplorer. ive tried calibrating before/after cycling. nothing seems to work.
the reason i know its not working, is because i will calibrate/cycle. lets say ill start a day with 100%. ill unplug my phone, leave for work, and use my phone moderately to feel out the battery drain. then at some point, ill plug it into my charger at work......just now, for example, after three hours of use my phone went from 100%-71%....i went to charge it, and once i plugged it in my percentage display changed from 71% to 63%!!! my percentage will constantly jump up and down throughout the day when i plug/unplug my phone.
anyone else experience this?
Topshelf, I have run into these problems, There are a couple of things that cause the battery to be wonky.
1st Samsung has the battery set not to 100% but actually less (95-98%) so when it is charged and reads 100% as soon as you unplug you get a immediate reading of 95-98% (nice huh?)
The dev/mods, and others have tried to rectify this. No one has found an exact fix for this. On thing I have found that does help is to charge to 100% then unplug and then plug into the computer and recharge back to 100% (the lower milliamp off the computer seems to allow you to get to a higher percentage). Then calibrate. Now when you do that the battery calibration/battery widget/and phone All will read more close (for me +/-3%). This is one of the issues you raised.
The other is the battery drain, with some of the custom roms the gallery seems to one of the culprits, mms sometimes stays on with others and some others that are in TSR but instead of being asleep they are taking resources.
I have used systems panel to trouble shoot and that has helped me. I think you may want to ask Explodingboy70, Roman or whitehawkx, they know more on this and maybe can help.
Hope you get it solved......... stay with it you will........... I did.........
PS the mv setting for the battery is supposed to be 4200mv mine never gets above 4196mv
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[Q] Battery / ROM problem??

Hi all. I really don't know what causes my problem, so I'll just describe it:
Epilogue:
My Legend came with some Vodafone ROM so as soon as I got it I flashed 2-3 ROMs found on XDA (all in the same day, all were 2.2) before I settled for BlaY0's. Everything was working properly. After 3-4 months I decided to try a new ROM so I flashed a 2.3.3 with HTC Sense (http://forum.xda-developers.com/showthread.php?t=987251) - didn't like it much; then I tried a Cyanogen, also 2.3 - didn't like it either. So I flashed back the BlaY0 2.2. (also, in one day)
This is when my problem started.
Usually my battery would last for a day and a half. But every evening I connect it to the charger (at about 50%). In the morning the little light turned from orange to green and the battery indicator showed 100%. This was before! Now, I connect the charger in the evening but in the morning the light is still orange and the battery indicator shows something between 70% and 85% (I don't know if this is important, but most of the times is 85%). Usually it took 2-3 to fully charge the battery.
After a while, I noticed that if I reboot the phone in the morning, after the reboot the indicator shows 95-98%.
First thing I did was to wipe the battery stats (http://forum.xda-developers.com/showthread.php?t=765656) but either I did it wrong or that was not the problem because it did'n solve anything.
Then I noticed something else. When I go to SETTINGS>ABOUT PHONE>BATTERY I can see the UP TIME and the AWAKE TIME. I'm guessing that the up time is the total time since last reboot but the awake time I'm not sure; is it the time the display was on or it is more about CPU activity? Anyways, it seems that after I connect the charger, it thinks that it is awake because in the morning I can read about 8-9 h of awake time (during the day it reaches at about 1-2 h). So it appears that something consumes the power at a higher rate messing with the charging process. If so, why does the battery indicator heals after reboot?
Thinking that an app was causing the problem I eliminated some of them: Advanced Task Killer, Llama, Watchdog. The problem persisted...
Now I'm out of ideas...so if someone has some I'd be grateful. It's not that I need to reboot in the morning, it's the not knowing that's killing me!
Absolutly same issue here.
I remember seeing a solution somewhere in the forum. Try using search. I think there're many threads revolving around this issue.
Sent from my Legend using XDA App
elk2210 said:
Absolutly same issue here.
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Click to collapse
I know that it's selfish but I'm glad I'm not alone
@Asovse1: I did a search before posting but I'll keep digging if you say there is a solution somewhere. Tks!
marginean.m said:
I know that it's selfish but I'm glad I'm not alone
@Asovse1: I did a search before posting but I'll keep digging if you say there is a solution somewhere. Tks!
Click to expand...
Click to collapse
There was a huge thread on this in General.
http://forum.xda-developers.com/showthread.php?t=1151450&highlight=charge
Unfortunate, until an alternate solution is found, it seems that replacing a piece of the hardware is the only way. Which sucks. I'm sorry.
When flashing a new ROM or switching between primary and secondary batteries in my wallet, I always make sure I calibrate it so the system doesn't misinterpret predefined untrue values regarding the highs and lows of the battery.
Actually, with my second battery, it takes an hour to charge from 2-60, then another one for 61-76, then the whole night til 100. It's quite horrible. The stock HTC battery excels at charging, but I digress.
It seems like a counter-solution to me, but maybe a temporary fix for you: Have you tried investing in a really cheap, secondary battery, perhaps on eBay? I bought two for around 2 dollars each, on separate occasions. My first I'm still using now, in my wallet, switches each month. My other one I bought recently, and the first time it dipped to 30%, it completely shut off. Needless to say, I threw it away, it was horrible.
@Asovse1
I read the thread...to be honest I never thought it would be a hardware issue. Anyways, replacing the motherboard isn't really a fix.
I guess your solution (having spare batteries) is the only one feasible. This kinda sucks!
Solution (see last sentence)
I have two HTC Legend phones here that both have this same problem.
I have read elsewhere that some people got the HTC Legend fully charged by charging it normally, like overnight, then powering it down and charging once more until the light turns green. Some repeated this procedure twice, i.e. pulled the charging cable, then plugged it in again.
I just tried charging with the phone powered down and got it to 100%.
But I'm still not sure whether this is just snake oil, because the indicated figure may not actually show the true charge.
Addendum: As I now know, it is snake oil. As far as I can tell, the phone charges normally. Only the indicator underreads. It does not reach 100%, it goes down rapidly, the phone keeps operating for hours with the indicator showing 3% or less.
And here is the solution.

[Q] Erratic Battery Behavior

Good afternoon everyone,
I didn't see another post on this topic for this device so I wanted to see if anyone knew what might be up. A few months ago, I installed the beta of CM7 on my Droid X2. It's been working great since then and I've been extremely pleased with the improvement over the stock build.
Over the past couple days though, I've been noticing that my battery reading has been incredibly erratic. An example last night had it go from fully charged to 4% in under two hours. When I plug it in, it charges at a normal pace up through around 25%, and then jumps to fully charged.
I installed a clean install of CM7 this morning and noticed the same issue persists. At first I thought maybe installing my new software drained it more than I realized, but it jumped from around 24 to 100% again while plugged into the wall charger.
I have several screen shots of the battery activity screen that I took when I noticed it acting odd. The one from this morning is attached below. If anyone could help me figure out what might be up, it'd be greatly appreciated. I wanted to start casually looking for a new phone, but not like this
Edit: I also have this one from just before I charged and just after the battery spiked downward.
Maybe you just need a new battery.
P.S. You talk on the phone a lot. lol
jsgraphicart said:
P.S. You talk on the phone a lot. lol
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Click to collapse
Heh, that's one of the things that has been acting up recently. That 65% is only a 7 minute call.
Well if its a software issue, an SBF should clean it up. And if it doesnt, Id say its the physical battery. But I havent been on CM7 in a long time. I forget what issues it had. I dont think this was one of them though.
jsgraphicart said:
Well if its a software issue, an SBF should clean it up. And if it doesnt, Id say its the physical battery. But I havent been on CM7 in a long time. I forget what issues it had. I dont think this was one of them though.
Click to expand...
Click to collapse
I'll give a new battery a try then. I just wanted to check in before shelling out some money for a non-fix. I installed the 2.3.4 SBF this morning before giving 7 a reinstall and the problem seemed to reappear almost immediately.
Thanks for your help.
Try rebooting into recovery then go to advanced>wipe battery stats. Then wait for your battery to completely die before recharging it

My Android OS battery drain fix

Hey guys.
It seems like almost everyone with battery drain issues has Android OS at the top of their battery stats.
I just want to share my experiences with this particular Bug.
Maybe it will help anyone. Please share if it also helped with your problem.
I had the Android OS bug since I dropped my phone a few months ago and had the screen replaced. The guy who replaced it (official Vodafone shop employee) said that they didn't just replace the screen and that something else was also damaged (they didn't say what) so they also replaced the rest. Well, that's when the Android OS problems started. I tried many ROMs and many Kernels. Sometimes the problem went away for an hour or so, but it always came back.
Then I finally decided to use BetterBatteryStats two days ago (I really should have done this earlier, I know...). I came to the conclusion that I had some sort of the well-known "fuel_alerted" bug, since fuel_alerted was the service that kept my phone from going into Deep Sleep.
This bug should have been fixed long ago but for me it somehow still persists, even on stock JB.
It didn't only drain a lot of battery (I had 8-10h maximum without doing much), it also used up a lot of CPU time, effectively slowing down the whole system to the point that I wasn't able to use Spotify on my phone without severe stuttering.
Well. I found a solution to the fuel_alerted bug.
The procedure is: turning airplane mode on, shutting phone off, taking out battery, putting it back in after a few minutes, turning phone back on.
This solved the problem. No more Android OS draining the power. Phone goes into Deep Sleep again. Only 2% drain after an hour. Spotify runs smoothly again. Yeah!
BUT well... It seems like the problem comes back randomly for me, today I had to replace the battery 5 times...
Now I am trying to strictly follow another "rule" to keep the problem from coming back: Always waking and unlocking the phone before plugging it in or out of power. I never did this before so it could have been the cause of the bug. Now let's see how long it stays bug-free.
If it still doesn't help, I guess I have to conclude it's some kind of hardware problem, which could only be solved by Samsung...
EDIT: Nope. Problem still there. So not really a fix, but maybe still helpful for somebody.
Okay, what ROM are you on?
Sent from the little guy
gastonw said:
Okay, what ROM are you on?
Sent from the little guy
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Click to collapse
It's the up-to-date stock Samsung ROM I guess. See attachment for infos.
Damn, it seems like the problem just came back without me doing much. I only checked BetterBatteryStats every 30 minutes or so and recieved 1 SMS just a minute ago. Seems like the bug started 20 minutes ago, when battery was around 78%. Now it's draining battery like hell again, Spotify stutters, Deep Sleep won't work...
Guess I'll have to pull the battery again.
Since I'm pretty new to all this: What kind of information would be useful to narrow down the source of the problem?
I can provide my BetterBatteryStats screenshots and logcat/dmesg files as well as my Android Battery Stats screenshots.
Is there anything else I could post?
Yeah, screen shots of partial and kernel wakelocks.
Sent from the little guy
I just rebooted the phone, waited for a few minutes and took screenshots.
Here they are.
Okay, this is what you need to do now, drain it empty, charge it (while phone off) till 100 %. Remove the battery, wait for 90 sec or so, put it back and power on.
It's a placebo, but it might work.
Sent from the little guy
Okay, I will try and do the charging overnight. Thanks!
derSchmiddi said:
Okay, I will try and do the charging overnight. Thanks!
Click to expand...
Click to collapse
Good luck man.
Sent from the little guy
I don't know much about kernel and ROM stuff, but I was just wondering...
As far as I understand, the fuel_alerted thing turns on if the battery charge goes below a certain threshold. The old bug with it was that, when recharging, the fuel_alerted thing would sometimes still stay on, even if battery charge is no longer critical.
Could it somehow be possible that this threshold is not set to 15% for me, but something around 80% due to some horrible bug?
This would explain why it suddenly turned on at around 80% when everything was fine before.
We're trying to adjust your fuel gauge and sort of calibrating your battery.
Sent from the little guy
Okay, I did exactly what you recommended.
Everything went well for about 2.5 hours.
Then the fuel_alerted process began again, but this time only for a short while apparently.
It took about 5 minutes kernel wakelock time in a 30 minutes measurement.
Way less than usual and when I check now, it's no longer active.
So. The problem might still be there, or it might not.
Do you recommend going through a few more recharge cycles to get the gauge set properly or do you think this won't make it better?
By the way, thanks for your quick responses!
derSchmiddi said:
Okay, I did exactly what you recommended.
Everything went well for about 2.5 hours.
Then the fuel_alerted process began again, but this time only for a short while apparently.
It took about 5 minutes kernel wakelock time in a 30 minutes measurement.
Way less than usual and when I check now, it's no longer active.
So. The problem might still be there, or it might not.
Do you recommend going through a few more recharge cycles to get the gauge set properly or do you think this won't make it better?
By the way, thanks for your quick responses!
Click to expand...
Click to collapse
Not really.
Now, when it gets to 15% or so plug it in (while phone ON), get battery calibration from play store.
Run the app, when it gets to 100 % hit calibrate. Plug off the device. Turn off.
Take out the battery for 90 sec again, reinsert it and power it on.
That calibration app is another placebo but as I said before, placebos sometimes work.
Sent from the little guy
Since the battery calibration app requires Root access, I flashed a Dorimanx kernel a few hours ago. Then I did a factory reset and the battery-removal thing. 5 hours have passed now without the bug, 3h of which were without wireless access (maybe it correlates with that).
I'll now let the battery (slowly) drain below 15% and then recharge it with phone on overnight. I will use the battery calibration tomorrow and will inform you about the results later.
Thanks man!
Good to know
Sent from the little guy
I did the battery calibration. Bug is still there, no changes
Post you battery details and a couple of BBS screens.
Sent from the little guy
Okay, here are some screenshots.
From the graph you can clearly see when the bug started.
Is it normal to have >26 kworker processes running?
Something else that concerns me: >2h without or with unknown signal. The whole day I was in an inner city area where the signal should be good...
Can you conclude anything from the screenshots?
I will now try something which I also should have tried earlier
I have a spare battery (not original samsung, less capacity) which I just put into the phone.
I'll let it fully charge with phone off and then I will try if the problem persists even with the other battery.
If it doesn't, the problem might come from the battery itself...
Is this a good idea?
No it's not.
You gotta post detailed info there, we can only guess what's draining your battery.
Sent from the little guy
Okay... I posted the screenshots you asked for...
What more should I post?

[Q] Help:Battery Drop after updated to .402?

So last night i plugged in my z2 to my laptop and download the update 402 via sony pc companion. I left it overnight and this morning when it finished updated, i switched on the phone it was at 99%.
After a few mins i look back, it dropped to 74%!
Has anyone experiencing the same issue? is this normal? is this update bad for the battery?
anyway i did a factory reset, it was still new anyway so not much things on it yet.
ps, i did not lose my X-reality.Its still there
I feel the new Rom takes a bit time to settle.Give it a day or so and then try to troubleshoot.
Sent From My Sony Xperia Z2 D6502 White
Before the update, i got ~6.2 hours SOT per charge.
Now only 4-5 hours.
I'm vastly disappoint son.
Actually one of the things I noticed early on was the biggest battery consumption compared to .55 and .69! I have just remove the device from the charger and with a bit of use, then it goes to 97%!
This is really scaring me! In FW .55 and .69 was very time to see the percentage going down!
See what its like after a weeks use and the battery is properly calibrated.
I bet you will be seeing similar results to the earlier firmware
cheetah2k said:
See what its like after a weeks use and the battery is properly calibrated.
I bet you will be seeing similar results to the earlier firmware
Click to expand...
Click to collapse
There is that right?
There is that possibility?
Why older versions did not have this time?
thanks guys for your input. Yeah i think its too early to tell on the battery consumption yet. I will observe it for a week or two and tell again
Most likely when you flash the update, the battery stats reset with other parameters, let it settle for few charges and see if it calibrates.
And check that your phone can enter Deep Sleep (CPU Spy from Play Store or similar). Could be that the update screwed that up.
SolidR53 said:
Most likely when you flash the update, the battery stats reset with other parameters, let it settle for few charges and see if it calibrates.
Click to expand...
Click to collapse
It would be good to let my battery run out completely and then charge 100% or is not recommended to do this? I know that this type of technology can not do this, but only in this case!
EDIT:
Yesterday I was using the phone and noticed that when the battery reached 60% it took longer to get down the percentage! So I was using the device and the percentage reached 29%, so I put it to charge all night. This morning I noticed a significant improvement, so much that I am using lot and is still at 97%! What leads me to believe that what user said above is true!
BR4DOKYBrazil said:
It would be good to let my battery run out completely and then charge 100% or is not recommended to do this? I know that this type of technology can not do this, but only in this case!
EDIT:
Yesterday I was using the phone and noticed that when the battery reached 60% it took longer to get down the percentage! So I was using the device and the percentage reached 29%, so I put it to charge all night. This morning I noticed a significant improvement, so much that I am using lot and is still at 97%! What leads me to believe that what user said above is true!
Click to expand...
Click to collapse
It's always like that, any phones after install new ROM(custom or official), it will take couple cycles of recharge to settle down the battery.
Well after 2 days I would say that this firmware drains battery much faster I've gone back to previous firmware version and getting much better battery results so I'll stick with this for now I think

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