Hi, I'm coming from an SM-930F and now have a SM-965F. I'm experiencing a strange charging behavior. I became aware of this when noticing that the S9 plus when connected to my Aukey QC 3.0 charger in my car via the OEM cable (screen on and GPS active) can only hold, but not increase the battery level. This was completely different with my S7 (same charger) which achieved an increase in battery level of 30% per hour, all other things equal. I now did some tests with a plug power meter and found that the charging current goes down immediately when the screen is switched on by roughly 75%. The charging power decreases from 6-7 W to 1.5 W. Please note that this is the gross current/power flowing from the wall socket to the device. With the energy consumption of the display, the net current flowing into the battery is negligible which explains the observation above. Interestingly, the effect is also present with the Qi charger, but to a much lesser extent (only 20% reduction of charging current with screen on). The S7 does not behave this way.
Has anybody observed similar effects or could check with his/her own device? Is this an intended behavior? Does this mean that - effectively - the S9 plus cannot be used while charging?
Best regards
Christoph
I have a USB multimeter and have checked several phones of mine.
This behavior is inherent to Qualcomm Quick Charge. I came to the S9+ from a Droid Turbo 2, both exhibited the same behavior.
Also i've never seen voltage spike above 9V, even though it's supposed to go up to (in theory) 12v (QC2.0)
Samsung support told me that this was not normal. I sent the device to them now. We'll see whether this will make a difference.
machristoph said:
Samsung support told me that this was not normal. I sent the device to them now. We'll see whether this will make a difference.
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Click to collapse
1.5W is waayy too low for modern smartphone, I'm averaging about 5W with the regular "cable charging" status.
I'm having issues trying to trigger the fast charging mode on my S9+ with the variety of QC2/3 capable chargers that I have laying around. Just bought a voltmeter to do more testing to see what's going on with these chargers.
I don't even get consistent result using Samsung's charger and cable, so I'm wondering if my port is jacked.
Samsung phones don't fast charge when the screen is on, but it shouldn't drop as much as you're seeing. It should work pretty much as the S7 did.
Hi folks,
I still have an issue with the charging behavior of my S9+ and, as time has gone by and I have collected some more information, I am seeking your advice again.
My problem is that cable chargin while screen is on is more or less impossible.
This is not about fast charging not working. I am aware that fast charging is not fully operational while screen is on.
But 9 out of 10 times my phone does not charge at all while screen is on when connected by cable.
However:
- Charging on QI charger with screen on is working.
- Cable charging with screen off (even with always on display switched on) is working normally (not superfast, but roughly 30% per hour which is ok for me)
- Even with screen on, status bar notification says that fast charging is active and gives "normal" estimated charging times. But the battery level won't increase over time (or only with very low rates).
I already tried various chargers and cables without any effect.
I resetted the phone for several times. I verified that the behavior described above also occurs with a plain phone without any Google or Samsung account or any other apps than stock installed.
Brightness of screen does not really matter (with lowest level you might get very slow (1% per hour) increase in battery life, with highest level it is closer to -1%/h).
I even sent it to the support where they told me they could verify and fix the problem --> without any effect.
I changed the phone. Unfortunately, the new one first seemed to work flawlessly, but showed the same behavior after some cycles.
Interestingly, sometimes (1 out of 10) cable charging with screen on is working at least somehow. Some days ago, I could increase batterery level by roughly 10% within one hour. But I could not repeat that.
I attach screenshots of GSam Battery Monitor which show that charging rate goes down as soon as display is switched on.
Do you have any ideas? How is your phones charging behavior while screen is on?
Best regards,
Christoph
I'm just speculating on this but I always was under the assumption it turns down the charging rate due to heat, having the screen on, GPS going, etc heats the phone. The newer models seem to be more sensitive to it and throttle back faster.
My dock sits on up on the windshield and it doesn't take much when it's sunny out for the phone to stop charging all together, it overheats when running GPS, screen on and the sun is hitting it. I need to find a new mount to move it lower down on the dash...
Thanks for your reply. I also suspected that temperature could play a role here. But I have not been able to verify that yet. Attached you'll find also battery temperature for the charging cycle shown in my previous post. I also let sit my phone in the fridge for a couple of hours before charging without any significant effect.
On the other hand, I find charging rate to be lower on hot, sunny days. Today, with cloudy sky, I could increase battery level by 4% during my 30 minutes commuting time. Thus, if there is a relationship with battery temperature, it's not a simple linear one...
I had to move my phone mount recently because of some changes I made to my car, previously it sat in front of the AC vent and I didn't have issues, now it's not and that sucker overheats and stops charging in no time when it's sunny out. If you can position it where a vent is blowing cold air on it, it should help.
Unfortunately it's already sitting there...
Hi,
I have a charger with a qualcomm QC 3.0 port and other regular 9V 2A ports, so I have the same problem when my phone is connected to QC port, but for some reason it's charging normally when connected to the regular ports.
My phone is the european exynos version.
Interesting, mine is the exynos version, too. I'll try to test a regular port, too.
And also good to know, that I'm not the only one with similar problems...
Related
unplugged my phone at 8 read xda forum for 5 mins got to work right now 943 already at 89 percent. Does this seem normal? I been checking better battery stats but don't really understand it. I feel like something is trying to sync. i have fetch off for email and Facebook. anyway to diagnose this on saurom rc4 clean boot.
Sent from my oversized communication device.
Are you overclocked? If you are, which governor are you using? I've posted in the OC kernel thread about an issue where the CPU is running at max frequency the entire time causing a huge battery drain.
I am right now but its showing me deep sleep and 192mhz on demond has a big percentage. Its not running max clocked i know that.
Sent from my oversized communication device.
This is my shots I'm at 78 percent now been on xda for maybe teen more mins. My brightness is one step above min level. Its like 1 percent every 3 mins when screen is on even if I'm idle.
Sent from my oversized communication device.
h3r3tic said:
This is my shots I'm at 78 percent now been on xda for maybe teen more mins. My brightness is one step above min level. Its like 1 percent every 3 mins when screen is on even if I'm idle.
Sent from my oversized communication device.
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Click to collapse
I think I know what the problem is: Your phone is trying to kill itself and save humanity from that terrible font
seems like a bit much but it could be normal.
Once your phone's charge reaches 100% it stops charging to prevent damage to the Lithium-ion battery. I am not sure however when it starts charging again.
Mine charge % dips even when I am using plugged in! Horrible consumption with screen on.
installed only few apps.
Sent from my SAMSUNG-SGH-I717 using XDA
mdamathew said:
Mine charge % dips even when I am using plugged in! Horrible consumption with screen on.
installed only few apps.
Click to expand...
Click to collapse
Are you using the Samsung OEM home charger? It shouldn't be dipping when using that one. Mine will charge AND increase while using it in the car with GPS running (huge battery drainer) and a driving DVR program (DailyRoads Voyager) and the screen on. All with a car charger and cheater plug that shorts Pin 2&3. That's the secret to getting rapid charge to work. The OEM home charger has those pins shorted internally. If you are trying to charge over USB on your computer then again you need that cheater plug and ensure the USB port can support more than 700 mA. If it's a USB 3.0 port then it should handle that current.
No problems for me on the stock or aftermarket chargers with the screen on.
I have the same problem with my brand new I717 GN. Battery level slowly drops when on charge, even if it's the OEM wall adapter. I've tried my Kindle USB cables as well with about the same results. I noticed the charge is a bit stronger from the wall source, but still can't keep up with even simple web browsing via WiFi. I've installed JuiceDefender as well, and it's helped reduce depletion a bit, but not really enough. This phone would never last me a full day of intermittent use without a power source.
I've read several of these threads and there doesn't really seem to be a solid solution to this other than some GN owners saying they have the problem and some don't...
Someone mentioned a crosswired 'Smart Adapter Compatible with Samsung Galaxy S' on Amazon (I'm too new and can't post the link)... I might try that but maybe I'll return for a new one if some people don't have this battery problem, unless it turns out to be a latest firmware problem..?
billzilla2000 said:
I have the same problem with my brand new I717 GN. Battery level slowly drops when on charge, even if it's the OEM wall adapter. I've tried my Kindle USB cables as well with about the same results. I noticed the charge is a bit stronger from the wall source, but still can't keep up with even simple web browsing via WiFi. I've installed JuiceDefender as well, and it's helped reduce depletion a bit, but not really enough. This phone would never last me a full day of intermittent use without a power source.
I've read several of these threads and there doesn't really seem to be a solid solution to this other than some GN owners saying they have the problem and some don't...
Someone mentioned a crosswired 'Smart Adapter Compatible with Samsung Galaxy S' on Amazon (I'm too new and can't post the link)... I might try that but maybe I'll return for a new one if some people don't have this battery problem, unless it turns out to be a latest firmware problem..?
Click to expand...
Click to collapse
he mentioned it and linked it 2 posts above you
ive thanked him, and guess about to buy
just that shipping cost more than the item itself, sheesh
I read an article in a journal recently about how smartphones charge their batteries. The article claimed that once the charge has reached 100%, it will stop providing current to the device until it reaches 90%, after which it will then trickle charge to maintain it at about 90%. All the while the battery meter will still show 100% (at least in the case of iPhones), but after you unplug the phone the first 10% will go rather quickly as it approaches the real charge level.
True for our notes? No idea. But with how Lithium batteries work, I wouldn't be surprised.
I haven't gotten my Note to discharge while plugged in with the OEM AC charger. In the car however, running Waze will suck the life out of it even while charging. (My car charger puts out about 150mA less than the OEM AC charger). Oddly enough, running Navigon on battery alone has less discharge than running Waze while plugged in...Which sucks, because while Waze has crappy directions, it has saved me many hours by routing around traffic. But at least the phone still charges while using Navigon and streaming some Pandora.
The forums are all filled with comments from (more or less experienced) people complaining that recharging their S3 might be at times strange with a certain ROM or another - and while maybe 10% of the time that might be indeed the case, in 90% of the cases it boils down to problems with CHARGERS and USB CABLES.
Right now it seems that the amount of power used for recharging is controlled primarily by S3 itself using at least 3 levels - of which at least two can be fine-tuned in software (and some kernels expose those features).
There is an "AC charger level" (set around 1000 mA), an "USB level" (set around 500 mA since USB1/2 standard does specify that) and a 3rd "low level / safety level" which seems to be around 50-100 mA.
The S3 seems to be choosing the level based on BOTH the charger and the USB cable used - and I have seen the same charger showing a different level with different USB cables, and the same USB cable showing a different level with different chargers. I have even seen one AC charger that with a very specific cable (not the one bundled with it) was showing "charging/USB" inside the S3, while all other cables on the same charger were showing "charging A/C".
So when your S3 charges very-very slowly your very first check should be with another USB cable, and second check should be from a different charger or USB port - instead of posting same questions again and again around here
IMHO the absolute safest charging combination right now is with the original Samsung USB cable from the USB port (ideally in a good notebook - good notebooks have very effective USB protection, and some - like the Thinkpad models - have an USB port that can power something even when the notebook is stopped, and with one extra BIOS setting even when the notebook is stopped and not connected to A/C)! This is not the fastest charging combination - and with an extended battery it might take like 9 hours for a full-full charge (4 hours with normal battery) - but is most likely the safest (simple) one! Also by charging with a smaller current the heat generated is (much) smaller and the "aging" of the battery is drastically reduced.
If you are in a huge-huge hurry you might want to use the original Samsung A/C charger plus the original Samsung USB cable, but don't "overdo it" by trying forced/exotic solutions/chargers - we even have an entire thread around here at XDA with "sudden death" cases - most of them observed in the morning after the i9300 was left overnight in some A/C charger
EDIT:
Also if you see a very-very slow charge (or even a discharge) while you are "charging" but you have the screen ON and the CPUs running at full speed you should know that is possibly normal - since screen ON + CPU at 100% is draining more than 500 mA (= probably most of, or more than you are getting from the cable); try to lock the phone or even power it off, and then after 20 minutes see if the battery is better and by how much.
EDIT2:
As a far later step if everything else fails you should also check if the pins inside the USB connector in the S3 are not bent in any way, but that is slightly more advanced and might not be perfectly fixed without replacing the connector.
Also if your phone has other serious hardware problems (cracked screen or so) you should mention that first.
EDIT3:
My stuff above was "educated guess" - now we also have 'hard technical data":
http://www.maximintegrated.com/app-notes/index.mvp/id/4803#5
Nice topic thanks for comprehensive content. I have been experiencing slow charges since i get my S3. I read about a guy, whos charging cable is officially changed by Sammy with a 5-pinned one, and fortunalately found a same type of cable. Since i started using that cable full charges take approximately 2 hours while using the original one results in 4 hours or so.. I also informed my local samsung service about the issue but they refused my explanations saying that there is no such an official report about the faulty original cables.
I was frustrated about dischages while playing games when the phone is plugged in. IMO this is one of the biggest fail for a phone to be discharged while plugged in.. But now it is completely fixed.
Sent from my GT-I9300 using xda premium
ggnoplay said:
Nice topic thanks for comprehensive content. I have been experiencing slow charges since i get my S3. I read about a guy, whos charging cable is officially changed by Sammy with a 5-pinned one, and fortunalately found a same type of cable. Since i started using that cable full charges take approximately 2 hours while using the original one results in 4 hours or so.. I also informed my local samsung service about the issue but they refused my explanations saying that there is no such an official report about the faulty original cables.
...
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The math is just right - 2000 mAh battery = 500 mA * 4 hours = 1000 mA * 2 hours.
My original usb + charger takes 5 to 8 hours and it has 5 pins !!!!
also I tried another 5 pins usb with the same original charger and it takes around 2:30 to 3:30 hours
So I need to buy a 5 pin usb one but how to guarantee it will work ????
xclub_101 said:
IMHO the absolute safest charging combination right now is with the original Samsung USB cable from the USB port (ideally in a good notebook - good notebooks have very effective USB protection, and some - like the Thinkpad models - have an USB port that can power something even when the notebook is stopped, and with one extra BIOS setting even when the notebook is stopped and not connected to A/C)! This is not the fastest charging combination - and with an extended battery it might take like 9 hours for a full-full charge (4 hours with normal battery) - but is most likely the safest (simple) one! Also by charging with a smaller current the heat generated is (much) smaller and the "aging" of the battery is drastically reduced.
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Click to collapse
I agree with this... in one night i used to recharge my S3 with a Blackberry Charger. Guess what? The digitizer went up like crazy, started to write crazy stuff (just 'zeroes' 00000). i immediately dissconected the charged and the digitizer when back to normal.
zeromant said:
I agree with this... in one night i used to recharge my S3 with a Blackberry Charger. Guess what? The digitizer went up like crazy, started to write crazy stuff (just 'zeroes' 00000). i immediately dissconected the charged and the digitizer when back to normal.
Click to expand...
Click to collapse
Yes, I have also seen something similar once with a very bad low-cost Chinese charger.
I also wanted to add some "hard" info to this thread - my stuff above was "educated guess" but in the meantime the full info become available and I added a link below with it (coming recently from the Perseus kernel thread) - as it can be seen from there there are basically 3 modes (but with the first one by default starting in 100mA, so this one should be either 100 if something goes wrong or go to 500mA).
http://www.maximintegrated.com/app-notes/index.mvp/id/4803#5
This is a very informative post. Recently I have been experiencing weird battery behavior on my s3 as well and wanted to investigate further.
I have 2 original Samsung batteries and using an original Samsung OEM charger to charge my S3 and Grand i9082. (both uses same 2100mah battery)
Now both the batteries and the charger charges and holds the current fast and long in case of grand i9082. (gives me more than 24 hrs on average usage and almost a day with wifi, cellular data on for dual sim, along with moderate messaging and youtube) no Issues at all on both these batteries and charger.
On my s3 it's a different story.
In 2-3 hours the same batteries die if I watch a movie on s3, it goes from 100 to 10.
(on airplane mode. lowest brightness, maximum wakelocks restricted, google services frozen, Maximum CPU frequency down to 400mhz settings enabled)
if I use it just for calls and moderate messaging, it last 12 hrs.
on airplane and standby mode together, it goes on for 24 days.
weird thing is If the device goes below 30% battery and I plug in the AC charger, and use the phone, the battery would still be discharging instead of charging.
on safe mode, the battery will neither go up nor go down, no matter how long I keep using it while connected on charger, it would stay at the same 10%.
while if I plug in for charging while it's above 30%, and keep using it, it would be charging normally.
sometimes the s3 would treat the AC charger as a Normal USB cable, while if I remove and put it back again, it would show me charging/AC.
Now going through this post
"There is an "AC charger level" (set around 1000 mA), an "USB level" (set around 500 mA since USB1/2 standard does specify that) and a 3rd "low level / safety level" which seems to be around 50-100 mA."
Great find. actually. what I conclude from this post and in my case, the s3 while it goes below 30% it fails to charge/ or chooses not to charge on "AC charger level" and would always choose the "2nd USB level" or the "third low level", resulting in drain while using the device at the same time, while if left idle it would slowly charge on the 2nd and 3rd level until 30% then moving on to the actual AC charger level at 1000.
this issue I guess can be sorted out with some kernel side changes.
perhaps setting a lower Maximum boot CPU frequency (1000mhz?) and a lower default GPU frequency.(this can also sort out few heating issues) and lower default brightness level as well (or maybe not, it's just a hunch and I am no master myself.)
Anyways thanks for the useful input.
I have an Infinix Note 2 (X600)that have some charging issues
when i charge the phone i usually need to jiggle the cable a little bit to get the power flowing, but lately it gets much worse. when charging my phone need a lot of time to charge. The charger is not the original phone charger, it's a spare samsung charger i found lying around in the house. its usually works fine up until now. I checked the charging power in ampere app and i found that the charger lose charging power slowly over time. for example the initial charge rate is 900ma , the charge rate slowly decaying -10ma /5-10 second to a point where the charge rate hit 0ma. i could leave the phone overnight but instead of charging the phone it reduce the phone battery instead.
My initial thought that it's because the faulty charging port because i game while charging and janked it fairly often. and ideas of what causes my problem or a fix ?
second question: is charging ports of micro usb android is all the same ? or it's different per phone model, cus im thinking to get the port replaced
Long story short. Use the manufacturer recommend,if not the original.
Yes they will mostly work, but when you take the cost of the device into account....
There should be information on this within the website for the smartphone etc.
Ironically enough, my battery died while I was typing this and I was running a GSAM bat test using always the original charger.
In logics term's, you can always start a car with a much cheaper battery, but when you're taking into account of longevity over quality and anything else you can throw at it, all roads have intersections...
Please email the manufacturer, things not the 90s so you will get better support [emoji12]
In no way am I to be taken seriously at ehm 4am.. and there's the bottom of the barrel answer from my beloved XDA
I have a Qualcomm 3.0 car charger which was worked with my older phone Samsung S8Plus and charge without any problem
Now I have a S9+ and it's not charging . Notification said it's connected to quick charger,but it's not charging just keep same battery level all the time and I am driving 45-50 minutes every day
Any ideas what it could be? And how to fix that.
If I'm running Waze and have the screen at high brightness my Samsung fast charger has trouble keeping up too... It might charge a couple of percent per hour but that's it.
Dropping the screen brightness a bit allows it to charge a bit faster.
Toobs said:
If I'm running Waze and have the screen at high brightness my Samsung fast charger has trouble keeping up too... It might charge a couple of percent per hour but that's it.
Dropping the screen brightness a bit allows it to charge a bit faster.
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Click to collapse
I use Waze and Internet Radio app in split screen, my brightness is like 55% not auto
Today I disable fast charge and no different so far.
These phones seem to have sensitive heat throttling, mine charges slow when running Waze and music at the same time. Try placing it in front of your AC vent and see if keeping it cool speeds up charging.
mjones73 said:
These phones seem to have sensitive heat throttling, mine charges slow when running Waze and music at the same time. Try placing it in front of your AC vent and see if keeping it cool speeds up charging.
Click to expand...
Click to collapse
Well mine is right in front of the A/C grill
Will try to use different charger today
Not sure what would be causing it, but there should still be no problem with it keeping up. For reference, I run my 9+ at auto brightness in the car, running Torque Pro, Waze, and Pandora full time to work and back, 40+ minutes each way. I have a Verizon branded charger that I got with my V30 back in Nov, and it has no issue not only keeping up, but also charging it up. I easily get a minimum of 15% or more charging just in that time.
I order me another charger . Will come in couple days . Anker 24W ,3.0
That one according Android Police one of the best chargers for our phone. Will see
Got new charger Sunday and try right away
That one :Amazon.com: Anker Quick Charge 3.0 24W USB Car Charger, PowerDrive+ 1 for Galaxy S7/S6/Edge/Plus, Note 5/4 and PowerIQ for iPhone X/8/7/6s/Plus, iPad Pro/Air 2/mini, LG, Nexus, HTC and More: Cell Phones & Accessories is working great
Sorry to be a nuisance, but I have a Baseus wireless charger installed in my car and all was fine and it did fast charging until it downloaded the UI 3.1 update.
Now the phone comes up with a ! in a battery saying that fast charging is not supported with this charger, so am a bit confused what's happened or changed, I like the fast charging aspect of it as it can put a good dollop of power into the phone on the way to work and I can also put Bluetooth on to link it to my car.
If it can no longer do this then I will need to change the charger.
So if this is the case, could somebody please recommend a fast wireless in car charger that will work with my S20+ 5G.
Thank you.
Interesting. I can't imagine wireless fast charging can be very fast, I was surprised to see the term.
Even Samsung talks about it albeit with no specs.
Samsung is historically notorious for bending the truth one way or another... you need to really scrutinize them carefully.
I wonder how "fast" it is compared to conventional fast charging with the 25w brick?
Apparently you're not alone and to make matters even worse the issue means no wireless charging at all to many of the effected users.
Samsung phones are having problems with fast wireless charging
The issues may have started with a recent security update
www.androidpolice.com
Best work around probably is to use cable fast charging and go for frequent midrange (40-65%) quick charges that only take 10-15 minutes but give enough mAhs to last 2-3 hours of screen on time. Li batteries love to be used like this and it can greatly prolong their service life.
Temperature matters; the battery needs sufficient temperature to support the electrochemical reaction properly.
Never start a charge cycle if battery is at freezing.
Avoid doing so if the battery is below 60°F
Below 72°F Li plating damage during charging becomes an issue and if it happens will permanently damage the battery's capacity.
Best start temp range is 80-90°F.
Fast charging* will not engage if the battery temperature is too low or high (approximately 100°F or higher).
Will disengage if temp goes too high as well when charging; first fast charging then all charging once it gets to about 101°F or higher*.
Best charging temp range is 80-99°F
*these charge throttling/auto shutdown values will most likely apply to wireless charging as well.
Thanks for the quick reply.
It's just that I find it most odd that this has only started to occur after the latest update, prior to that no issues whatsoever.
All I know is that when I put my phone into the holder, the jaws close and it normally says Fast charging: xx% and a estimated time to full charge.
A typical fast charge takes about 15-18 minutes which takes it from ~90ish% to 100%, I like to have the phone up to full charge before I get to work as I never know when I might get another chance to charge my phone off the mains.
Another oddity is that I have a Spigen wireless desktop charger and that does a fast charge without any issues.
TheDriver67 said:
Thanks for the quick reply.
It's just that I find it most odd that this has only started to occur after the latest update, prior to that no issues whatsoever.
All I know is that when I put my phone into the holder, the jaws close and it normally says Fast charging: xx% and a estimated time to full charge.
A typical fast charge takes about 15-18 minutes which takes it from ~90ish% to 100%, I like to have the phone up to full charge before I get to work as I never know when I might get another chance to charge my phone off the mains.
Another oddity is that I have a Spigen wireless desktop charger and that does a fast charge without any issues.
Click to expand...
Click to collapse
Updates... destroyer of worlds.
Hopefully they will correct it and push it out soon.
Try clearing the system cache.
Double check settings.
You can try a hard reboot (not reset).
The associated apks for it are probably in Android services but clearing its data would cause a lot of work resetting settings and may not help at all.
If you did a major firmware update ie OS upgrade a factory reset is a good plan, otherwise it's likely a waste of time.
I'm now even more confused, this evening I put the phone in the holster/charger and it instantly initiated fast charging and topped the phone up in 15 mins.
I've tried turning on WiFi hotspot, no change, WiFi on/off and it still charged at fast speed.
Turned Bluetooth on no change. So I don't know why it's doing what it's doing. Weird.