Phone not showing accurate battery level - stays at 1% for ages - General Questions and Answers

Hello,
I followed the excellent guide linked below for help with calibration of a Samsung battery.
[GUIDE] Samsung Battery Calibration
Samsung Phone Battery Calibration Guide Description: This guide is for those who are experiencing battery issues (e.g., battery suddenly dying at percentages >1% or battery draining too fast or messed up battery readings after custom ROM...
forum.xda-developers.com
Unfortunately, it did not solve my problem. I was hoping someone here might be able to help.
My battery calibration issue is different to anything I've seen before. I had the usual battery problems and got a replacement battery fitted. My current problem is that the battery has more charge than the phone realises (which is the opposite of the usual problem one tends to see with a bad battery).
The battery level falls quickly from 100% down to 1% at a rate of about 10% per hour. But then it stays at 1% for AGES! Even if I leave a video running on YouTube on maximum brightness. A minimum of 30 minutes but possibly more. So there's plenty of milliamps in there, it's just that the phone doesn't realise this.
I tried following methods 1 and 3 from the guide linked to above but the problem is still there.
Any suggestions? Thanks in advance.

Thanks for your reply. I've tried this but unfortunately this hasn't fixed the issue. Any other suggestions?

Has the battery ever been replaced? This kind of behavior can happen with a failing battery.
FYI: If phone's battery health shows less than 80% then battery should get replaced.

xXx yYy said:
Has the battery ever been replaced? This kind of behavior can happen with a failing battery.
FYI: If phone's battery health shows less than 80% then battery should get replaced.
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Yes the battery has been replaced recently. Within the last 6 months.
Where do I see the battery health from? It's a Galaxy S7.

Related

[Q] High display %

Hi guys
I have a galaxy s2 and im having problems with the battery. In the battery usage section the most that takes up the energy from the battery is the display. Even lowering the brightness settings the display is still sky high. Now having flashed it few times the warranty has now gone. Tried different roms and still the display on my galaxy is like 45 to 55 percent. Some say its normal some say its not. Once i fully charge the phone within minutes the battery starts getting drained. Seriously what is wrong with it and what can i do to resolve it. Im past my month that i could send the phone back and samsung obviously will find out its been tampered with ie me flashing it
Is there anything i can do to solve the problem with firmware or am i stuck with a faulty phone and just make the most of it till something else comes along?
Any help or ideas will be appreciated
tjoannou2001 said:
Hi guys
I have a galaxy s2 and im having problems with the battery. In the battery usage section the most that takes up the energy from the battery is the display. Even lowering the brightness settings the display is still sky high. Now having flashed it few times the warranty has now gone. Tried different roms and still the display on my galaxy is like 45 to 55 percent. Some say its normal some say its not. Once i fully charge the phone within minutes the battery starts getting drained. Seriously what is wrong with it and what can i do to resolve it. Im past my month that i could send the phone back and samsung obviously will find out its been tampered with ie me flashing it
Is there anything i can do to solve the problem with firmware or am i stuck with a faulty phone and just make the most of it till something else comes along?
Any help or ideas will be appreciated
Click to expand...
Click to collapse
The battery might be dying. How old is the battery? Li-ion batteries will work for 3 years or so only regardless of whether you used it or not.
The display might be taking up so much battery because that's how you use the phone. ie you don't use much of other battery heavy stuff. Make sure you have a low timeout for battery as well.
tjoannou2001 said:
Hi guys
I have a galaxy s2 and im having problems with the battery. In the battery usage section the most that takes up the energy from the battery is the display. Even lowering the brightness settings the display is still sky high. Now having flashed it few times the warranty has now gone. Tried different roms and still the display on my galaxy is like 45 to 55 percent. Some say its normal some say its not. Once i fully charge the phone within minutes the battery starts getting drained. Seriously what is wrong with it and what can i do to resolve it. Im past my month that i could send the phone back and samsung obviously will find out its been tampered with ie me flashing it
Is there anything i can do to solve the problem with firmware or am i stuck with a faulty phone and just make the most of it till something else comes along?
Any help or ideas will be appreciated
Click to expand...
Click to collapse
The display battery usage will be relative to how much screen on time you have. If you are having problems with how long your battery lasts, download BetterBatteryStats (from my sig) and run it for 24 hours or so then check the wake locks to see if any rogue apps are draining your battery.
If you want to return the phone. You can always flash the stock rom and if you buy a USB jig from ebay, you can reset the counter, so Sammy shouldn't know that you have flashed any roms.
For further tips about your battery, why not look at some of the custom rom threads, like Villainrom. They have very good battery stats and there are plenty of tips in the thread.
Hope this helps
well i have it charging at the moment and i am using cognition rom and the phone is like sleeping as we saying. i quickly went into battery usage and display is like 85 %.
Shall i charge it to the max calibrate it then wipe battery stats and let it drain out till its empty fully charge it and then use it till the end of the week and then post a picture of how it went for you guys to see and you give me your ideas on it?
thanks again i really appreciate your opinions
I have never bothered calibrating my Battstats, but it makes some people feel better.
As I said above, the percentage used by display is relative.
If your phone has been on for 24 hours since charge and your display is 85%, then you have a major problem, as your screen on time must be massive.
However if it is 10 minutes since charge and the display is 85% then that probably equates to a few minutes screen on time.
Once you are charged. Run the phone for as long as possible then post screenshots of the Battery Usage (both pages)
tjoannou2001 said:
well i have it charging at the moment and i am using cognition rom and the phone is like sleeping as we saying. i quickly went into battery usage and display is like 85 %.
Shall i charge it to the max calibrate it then wipe battery stats and let it drain out till its empty fully charge it and then use it till the end of the week and then post a picture of how it went for you guys to see and you give me your ideas on it?
thanks again i really appreciate your opinions
Click to expand...
Click to collapse
killall said:
I have never bothered calibrating my Battstats, but it makes some people feel better.
As I said above, the percentage used by display is relative.
If your phone has been on for 24 hours since charge and your display is 85%, then you have a major problem, as your screen on time must be massive.
However if it is 10 minutes since charge and the display is 85% then that probably equates to a few minutes screen on time.
Once you are charged. Run the phone for as long as possible then post screenshots of the Battery Usage (both pages)
Click to expand...
Click to collapse
Agreed with killall. Battery stats are relative. Say you have used your for ten minutes after charging and the screen was on for 5 minutes or more, an 85% for display is nothing big.
Like he said, see the overall performance of the battery and its life. Display percentage doesn't make that much of a difference if you use your display a lot. I mean if you don't do much CPU intensive gaming or stay connected to wifi and stuff.

[Q] New Battery Calibration

I bought a new battery for my oneplus one from vifocal.com and I think its original battery. The battery seems to be very poor. I use my phone for 1,5 hours from which the screen is on for about 1 hour and the battery has drained down to 50%. Yesterday as my phone went to zero I turned it on in recovery mode to keep the screen on as long as possible to really kill the battery and the screen stayed on for at least 2 hours. How is that possible if the battery indicator shows already 0%. Anyways I believe the battery drops down to 0% even really there is a lot of juice in the battery. Is there anyway to calibrate the battery so it would show the correct percentage and is there anyway to tell how big is the battery really? whether I got a fake one or not. thanks
andresantos said:
I bought a new battery for my oneplus one from vifocal.com and I think its original battery. The battery seems to be very poor. I use my phone for 1,5 hours from which the screen is on for about 1 hour and the battery has drained down to 50%. Yesterday as my phone went to zero I turned it on in recovery mode to keep the screen on as long as possible to really kill the battery and the screen stayed on for at least 2 hours. How is that possible if the battery indicator shows already 0%. Anyways I believe the battery drops down to 0% even really there is a lot of juice in the battery. Is there anyway to calibrate the battery so it would show the correct percentage and is there anyway to tell how big is the battery really? whether I got a fake one or not. thanks
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Click to collapse
I've had an opposite issue few times - phone was shutting down while it was show that it still had battery (20% was the worst case). I fixed it by discrharging fully, then letting the phone charge all trough the night. this was the recommendation that I found on OPO forums from someone from their team.

My battery lasts about 6 hrs without use-is it the battery or the phone

So I've had a S6 since about 2014/15, somewhere around there. I've had problems with battery for a long time, but now, my battery only lasts for about 5-6 hours of sleep, and maybe 45min of use. I factory reset my phone and my problem remains. I then downloaded accubattery and it says that my battery is 86% of stock capacity. Does anyone know what my problem is? Is the battery bad?
hornetvtol said:
So I've had a S6 since about 2014/15, somewhere around there. I've had problems with battery for a long time, but now, my battery only lasts for about 5-6 hours of sleep, and maybe 45min of use. I factory reset my phone and my problem remains. I then downloaded accubattery and it says that my battery is 86% of stock capacity. Does anyone know what my problem is? Is the battery bad?
Click to expand...
Click to collapse
Sounds like you definitely need the battery replacing
You could try to calibrate the battery. Basicly tells the Phone when its properly charged and discharged.
Just Google Galaxy S6 battery calibration and the first answer is your manual.

Samsung S7 battery crash under 15%

hello,
since 2 days my S7 has a battery crash.
when it is under 15% of battery, it goes to 1% in few minutes and then goes in auto turn off.
i.e. the battery goes from 10% to 5% in 20seconds.
i.e. auto turn off at 13%.
if I try to turn on the battery is at 0%. I only have to charge it.
in the battery stats I see a vertical line under 15%.
Before to do a factory reset, someone knows this issue?
it has 1 year and 4 months of life.
Thank you in advance.
crystal13282 said:
hello,
since 2 days my S7 has a battery crash.
when it is under 15% of battery, it goes to 1% in few minutes and then goes in auto turn off.
i.e. the battery goes from 10% to 5% in 20seconds.
i.e. auto turn off at 13%.
if I try to turn on the battery is at 0%. I only have to charge it.
in the battery stats I see a vertical line under 15%.
Before to do a factory reset, someone knows this issue?
it has 1 year and 4 months of life.
Thank you in advance.
Click to expand...
Click to collapse
thus might be a problem in your battery itself have you tried taking it to a repair lab and have them replace your battery?
I don't yet called samsung assistance (it is under 2 years warrancy).
Someone told me to calibrate the battery. I have found some guide but I don't know what is the best guide.
Thanks.
it is not only my problem.
Other person have my same issue.
https://forum.xda-developers.com/s7-edge/help/s7-edge-g935v-battery-drain-fast-15-off-t3649972
thanks
crystal13282 said:
it is not only my problem.
Other person have my same issue.
https://forum.xda-developers.com/s7-edge/help/s7-edge-g935v-battery-drain-fast-15-off-t3649972
thanks
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Click to collapse
Dont worry, I am almost completely sure it is just a calibration issue, read this xataka post, i think this is the right way to calibrate any battery https://www.xatakamovil.com/varios/como-calibrar-la-bateria-de-un-movil-y-por-que-deberias-hacerlo , it is in spanish but you can translate it. If it doesnt work you better use your warranty, i had a Galaxy Tab S with the same problem and the way to solve it was reconecting the battery(you have to disconnect the battery from the mother board), it is a really simple task, takes 20 secs but since you cant take out the battery because the S7 is unibody, you need to take your phone to Samsung.

Battery life reduced by a huge amount after calibrating on Galaxy S9+

I have a 3 year old galaxy s9+. In the most recent battery test I did on it, i got a solid 8-9 hour SOT on a video loop test.
Sometime after that, my battery started dying quickly at 30%. I searched online and battery calibration seemed to be the way to correct it. I did it and now my phone retains less than 67% of its actual charge. Meaning, it dies every 3-4 hours now. It charges insanely quickly too. Obviously the battery hasn't degraded by a while 20% since the video test since that was done only 2 months back. Please help!
The Android OS has a feature called Battery Stats, which keeps track of battery capacity, charge level, etc.pp. Most times the problem lies with how the Android OS reads and displays the current charge level of the battery, not the battery itself. The Android OS file that houses these informations may be corrupt or even missing.
Calibrating your "Android" battery simply means getting the Android OS to correct this collected information so it is reflective of your actual battery charge level once again. Your device's Android must be rooted to successfully calibrate the "Android" battery by means of of a "Battery Calibrator" app like this one:
Download Battery Calibration latest 3.3 Android APK
Battery Calibration Android latest 3.3 APK Download and Install. Battery Calibration is the #1 battery calibrating app in the Google Play Store.
apkpure.com
Take not that simply running a battery calibrator app isn't all what you have to do,
read complete XDA article here:
[GUIDE] How to Callibrate Battery On Your Device [ROOT/NON-ROOT]
Battery problems are among the biggest concerns for smartphone users, which is why XDA offers so many useful tips for solving battery drain issues. If you notice that your battery performance and duration has decreased, it could be time to...
forum.xda-developers.com
TY for the detailed reply. I definitely don't regret asking on xda! I will follow these procedures and update on the progress. TY
EDIT: The battery calibrating app you had linked doesn't seem to be working. It doesn't go past the log in screen. I've gone through the calibrating wiki you linked. I'll try that.

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