Tablet battery Draining drastically without use - Android Q&A, Help & Troubleshooting

For the last couple of weeks my tablet battery has been draining on its own. I unplugged it after a full charge and never once touched it to use it and about 14.5 hours later was at 3%. It seems to be going down around 7% an hour without use.
I have location services off
did a factory reset
When I go look at the battery stats it shows Android OS as the top one with about 61%.
Any suggestions? My tablet is almost useless now unless its plugged in or I turn it off every-time I put it down.
Thank you.
ASUS TF701T-B1-GR
Android 4.4.2

Related

[Q] Battery does not charged upto 100%

No matter how long my g tablet is plugged in,
it does not charged until the battery meter says 100%.
It always get charged upto 96%.
Is there anyway to fix this problem?
Is it something that can be fixed by clearing batterystat.bin?
If that so, can I do that using adb? Thank you.
khunny,
This is pretty common with the G-Tablets.
You can run it down all the way and then go into CWM and tell it to reset the battery stats.
But often as not that doesn't change much.
My personal advice (I have one that often does the same) is just ignore it. If it's 96%
you've got no problem and at less than 10% you better be thinking "charge."
Rev
Mine only charges up to 96% as well. Gonna try to reset it in CWM after it drains. Hopefully it works, cuz while having it only go to 96% isn't a huge deal its something I would like t be able to fix.
search is your friend
It is normal. Gtab treats 8.3V as 96%. In theory, 2cell li-ion battery 100% of charge is 8.4V. But, such battery does not like to be overcharged (it will shortened battery life).
mine did charge to 100 percent before installing vegan 5.1 supplement? Now it charges to 98 no matter how long i leave it plugged in? There has to be some way to alter the battyer stats to show 100 percent if it is??
Mine finally got to 100%
I had this tablet only for a week or so. I have installed Vegan 5.1.1. I noticed the battery only charged to 95% or 96%. I have drain the battery all the way, and then "Reset Battery Status" in CWM. But, it did not work the 1st time. Then, I drained it again. After the tablet shuts off automatically, I would push the power button to turn it on a few times to drain it more. Then, I reset the battery status in CWM, AND, I "Fixed File Permissions" right after the battery status reset. Then, reboot the device, and it reached 100%
Note: I drained the battery at work, tried to turned it back on about 3 times after it shuts itself off. After I got home, a few hours later, I turned it back on one more time, and the battery showed 2% and stayed on for quite a while. Not sure why that is. Hope this helps.

[Q] Battery Issues

Ive been having a weird battery issue. my battery gauge will say its at 15% or whatever it says at the time. ill plug it in and like 10 minutes later it will say 100% battery is fully charged. Obviously its not 100%, even when I charge it overnight, when I unplug it itll be stuck at 100% for like 2 hours then all the sudden drop to like 85%. im lucky if my battery lasts 12 hours now , same thing has happened on different roms. Do I need a new battery?
armyms25 said:
Ive been having a weird battery issue. my battery gauge will say its at 15% or whatever it says at the time. ill plug it in and like 10 minutes later it will say 100% battery is fully charged. Obviously its not 100%, even when I charge it overnight, when I unplug it itll be stuck at 100% for like 2 hours then all the sudden drop to like 85%. im lucky if my battery lasts 12 hours now , same thing has happened on different roms. Do I need a new battery?
Click to expand...
Click to collapse
I'd try a different ROM/Kernel, see if that makes any difference (after clearing batterystats in CWM).
If that wouldn't help, I'd say battery is ze dead.
DarkDvr said:
I'd try a different ROM/Kernel, see if that makes any difference (after clearing batterystats in CWM).
If that wouldn't help, I'd say battery is ze dead.
Click to expand...
Click to collapse
tried differents and kernels, and wiped battery stats guess my battery is done
try "battery calibration" app. it helps me a lot, and keep my phone running longer. i can last almost a day with medium use.
i have also tested with on screen non-stop (wifi + online game that require wifi, brightness roughly around 30%, medium volume, with whatsapp and talkbox in between), in conclusion, i can run for 4hours plus straight with sufficient battery left. i never push it through, i think i can go for 5 hours if i want to.
battery calibration app can be found in play google store
Worst battery life evah!
Im having issue with my battery as well, I plug it in a electric outlet for about an hour last night and when i saw the charge, it was only like 49%!!!!
And today, before my meeting it was like 22%, after an hour of meeting, BOOM! EMPTY BATT! What I only did was surf and checked my calendar!
It charge slow! And its draining fast!
something happened to my battery before last month, when i charge my fone it says 88% then suddenly after few mins 1 or 2 it become fully charge,but when i unplug my charger it comes back to 88% again, i tried some apps like battery calibration and also i'm wiping the battery stats in cwm everytime i flashed a new rom and it helps my battery charge in normal and accurate level...i'm using also cpu spy to checked if my fone is going to a deep sleep. now my battery lasts for 1day 11hrs with light usage. but for heavy usage i've got 40% after 4hrs of continious hd gaming.

Poor Battery Life on Captivate Running 4.0.4

I have a Captivate running Dark Knight's 4.0.4 and the battery life I get is very poor. Usually it says that Android OS or Google Services is taking about 30, 40+ percent in battery life. I get about only 10 hours of use with the device, and i still get battery drain even when it is in sleep. I've checked better battery stats and gtalk_async_conn has been waking up the device. I disabled all syncing, and in the Play Store disabled automatic checking for updates. I've tried calibrating my battery also but nothing, mainly since the phone cant turn on for some reason while it is charging. But no matter what I do, that process is still killing my battery. Does anyone know how to fix this? I had the phone off and charging for 12 hours, and 1 hour has past since i turned it on, using the phone for about 3 minutes, and the rest of the time it was in sleep, and the battery is down to 91%. Please Help!

Battery & Gauge Issues

My DNA battery has gone crazy. Last night the battery was at 66%, I restarted it and the battery went up to 76%. Today, the battery was at 33%, I rebooted it and the battery dropped to 17%. After that I rebooted it again to see if it would go back up and it dropped to 14%. So I did it one last time and that battery then went up to 24%. I dont get it and on top of that my battery life has been terrible recently.
To try to extend it I have installed Lux to manage the screen brightness, I have turned off backup and Google Location Service.
I got Nova Launcher yesterday to see if that helps, I'm using Greenify to close apps and CleanMaster to get rid of junk. I dont use Google Now or have any apps sync/receive notifications besides Messages and Phone. I can't get through the day and I don't use my phone from 7am to 12 in the afternoon.
I have 25 apps installed from Google Play and all the bloatware and useless apps disabled. I use Next Browser instead of Stock/Chrome
Any solutions or suggestions
eric150 said:
My DNA battery has gone crazy. Last night the battery was at 66%, I restarted it and the battery went up to 76%. Today, the battery was at 33%, I rebooted it and the battery dropped to 17%. After that I rebooted it again to see if it would go back up and it dropped to 14%. So I did it one last time and that battery then went up to 24%. I dont get it and on top of that my battery life has been terrible recently.
To try to extend it I have installed Lux to manage the screen brightness, I have turned off backup and Google Location Service.
I got Nova Launcher yesterday to see if that helps, I'm using Greenify to close apps and CleanMaster to get rid of junk. I dont use Google Now or have any apps sync/receive notifications besides Messages and Phone. I can't get through the day and I don't use my phone from 7am to 12 in the afternoon.
I have 25 apps installed from Google Play and all the bloatware and useless apps disabled. I use Next Browser instead of Stock/Chrome
Any solutions or suggestions
Click to expand...
Click to collapse
Maybe just try to do full cycles with the batter to re-calibrate it, charge it up 100%+ and drain it 99%, rinse/repeat a few times.
.torrented said:
Maybe just try to do full cycles with the batter to re-calibrate it, charge it up 100%+ and drain it 99%, rinse/repeat a few times.
Click to expand...
Click to collapse
Ive read that you arent supposed to drain the battery and this phone is unpredictable for when it will turn off from a low battery.
Sometimes it turns off at 8%, sometimes it might turn off at 2%
eric150 said:
Ive read that you arent supposed to drain the battery and this phone is unpredictable for when it will turn off from a low battery.
Sometimes it turns off at 8%, sometimes it might turn off at 2%
Click to expand...
Click to collapse
You're right about draining the battery however we cannot fully drain these batteries. The system shuts the phone down when it hits a certain level, however you can still power the device back on after it does this, thus the battery still has charge and not fully drained.
And yes they can be unpredictable.
Mine will shut down when it gets to about 5 percent but I was using it one time and it went from 8 to 2 in a second and powered itself down. I think they all act weird when they get really low but your issue sounds like the battery is on its last leg.
Sent from my Nexus 7 using XDA Premium 4 mobile app
According to your battery stats, what's draining the battery the most? Also download GSam battery stats to get a more detailed look at the apps and services that are consuming battery.
Maybe your battery is past its prime, but you want to be sure its not an app or service draining things before giving up.
My Droid 3 and 4 are still going strong as long as I charge them fully and then periodically drain them to 10%.

Inconsistent battery readings but no drain

Greetings. The past month I've been getting wrong battery readings from my redmi 5(rosy, miui global 11.0.2 stable, android 8.1.0). It no longer charges to 100%, regardless if it's turned on or off, unless I unplug and replug the charger in which case it jumps immediately to 100%. There are massive percentage drops when idling( 20% drop in less than an hour), and the battery will drop all the way to 2% within 24hours. The battery life itself is no issue. I get consistently about 6-7 hours of screentime, and about 2 hours of that screentime the battery is stuck at 2%. I use the voltage readings from gsam monitor to know when the phone needs to charge, (3300mah battery, 4.3 max charge,3.45V minimum).
Attempting to repair the problem I've tried the following:
1) Allowed the phone to completely drain and shut down, left it to charge. No good. Stopped at 88%. I've attempted this multiple times to no effect.
2)Took the battery off the board and replugged it.
3) Bought a new battery altogether. Even replaced the usb board and the flex cable just to be sure.
4)Swapped the charger with one from a Redmi Note 5.
5) Rooted the phone, installed gsam battery monitor. Although I discovered various issues,the battery consumption is still negligible. Assuming I can trust the readings, 70% of battery life goes to the screen. 0ne thing worth noting however is the Android system process is constantly using the significant motion detector. I traced it back it the Google play services, but it doesn't allow me ,even with root access to turn off its use of sensors.
6) Deleted the batterystats.bin file from the system folder.
7) Enabled the battery saving feature and disabled synchronization.
8) Reset smartphone to factory settings.
9) Wiped data and cache from recovery.
10)Flashed a Pixel Experience custom rom.
11)Installed accubattery. It calculated a smaller battery capacity. However all the metrics and statistics were thrown out of whack as soon as the battery started freefalling from 40% to 2%(in idle).
12)Charged the phone from recovery mode(Orangefox). Still stuck at 87-88%.
The battery doesn't drain when the phone is turned off, but it still won't charge to 100% unless I replug the charger.
Also I forgot to mention but the phone is strictly used in airplane mode as secondary device so you can rule out cell standby drain from poor signal reception.
I'm thinking of flashing back the original rom but what are the odds of this being a rom related issue?
I'm currently testing it's full idle drain time. I won't use the device for at least 24 hours or wait until it's discharged completely.
Has anyone else encountered a similar issue? Thank you for your time.

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