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Newbie here - I have a stock G Tablet.
Have added many apps and also Flash and it is working great.
My one concern is that however long I charge the unit,
I can't get the battery indicater to go above 93%.
Is anyone else experiencing this ?
hello there,
yes i am having the same problem. no matter how long, mine can't get past the 95% mark. clockwork mod + tnt 2.2
ideas on how to fix this, anyone?
regards
Try to recharge with the device powered off, and let it charge for at least half an hour after the light turns green.
I've left it plugged in a good 2 to 3 hours after the green light came on.
It still only reaches 93%.
Is it a bad battery, bad charger, etc.,
Any thoughts... anyone ?
BluesTele said:
I've left it plugged in a good 2 to 3 hours after the green light came on.
It still only reaches 93%.
Is it a bad battery, bad charger, etc.,
Any thoughts... anyone ?
Click to expand...
Click to collapse
Do a full cycle, all the way dead and then charge as stated for about 30 minutes after the green light comes on. It could be just a calibration problem. How long is the battery lasting for you?
I use it for short periods throughout a day, so it is difficult to gauge an accurate time.
A rough guess would be approximately 6+ hours.
I always thought it wasn't good to totally drain this type of battery ?
Battery Life
BluesTele said:
I use it for short periods throughout a day, so it is difficult to gauge an accurate time.
A rough guess would be approximately 6+ hours.
I always thought it wasn't good to totally drain this type of battery ?
Click to expand...
Click to collapse
I think this is a LiPo battery - if so, then its is OK to let it drain all the way - just don't do it too often. You should *always* do two full discharge/recharge cycles on any Lithium-based battery as soon as you purchase it, and again about every month or two.
For removable Lithium-based batteries (i.e. *not* for gtab!), if you aren't going to use the battery for, say, more than a week, the best thing to do is to discharge it to about 50% and then put it in the refrigerator. When you are going to start using it again, let it warm to room temperature for at least a few hours to a day (depending on how big it is), *then* put it on the charger. Absolutely do not charge the battery cold as the thermal shock could damage the battery.
The initial discharge/recharge cycles "primes the pump" so that you get the maximum capacity out of the battery (who knows how long the battery has been 'sitting on the shelf'), and the ongoing discharge/recharge cycles keeps the battery at its maximum capacity *and* allows the calibration electronics more accurately track the slow decline of the battery's capacity.
BTW, my gtab's battery lasted on-and-off for almost 2 1/2 days. That was 'sleeping' it at night (*not* turning it off!) and using it on-and-off wifi/surfing/playing AB during the day. I must say, the gtab's battery life is phenomenal!
andygee said:
Do a full cycle, all the way dead and then charge as stated for about 30 minutes after the green light comes on. It could be just a calibration problem. How long is the battery lasting for you?
Click to expand...
Click to collapse
Thanks. Tried the full discharge and then full charge with the gtab turned off, left for about an hour after the green indicator, but still stuck at 95%. Even deleted the batterystats.bin file. no change. must i do two cycles of full discharge and charge?
I'm having similar issues. I powered off my gtab overnight and let it charge for 8-9 hours and I have not been able to get the battery to say 100%. I'm going to leave it on all day and let it discharge completely and try again tonight.
Drained battery and left it charging overnight and while I was at work (15+ hours) and its still at 95%. I wonder if I should exchange it now.... I'll give it another week....
If you do two full discharge/recharge cycles and the battery is still not showing 100%, then I would take it back. Either it is the battery or the battery calibration electronics that isn't working (my bet would be the battery). Furthermore, since the battery is "not removable", its just not worth keeping it and taking the chance.
If the battery had been removable, then Viewsonic could have just sent you a new battery instead of having a whole gtab come back....
(Note for Viewsonic - this is where removable batteries are superior to non-removable!)
japhule said:
Drained battery and left it charging overnight and while I was at work (15+ hours) and its still at 95%. I wonder if I should exchange it now.... I'll give it another week....
Click to expand...
Click to collapse
Before you return it check the actual battery life. If it turns out that it's just a calibration issue and if your happy with everything else, perhaps you should keep it.
Read the thread about my battery test...
mine is different... I can charge up to 100%, and keep using it for few hours at night, put it to sleep, then I wake up in the morning and find the battery completely drained... any1 has the similar issues??
chukostar said:
mine is different... I can charge up to 100%, and keep using it for few hours at night, put it to sleep, then I wake up in the morning and find the battery completely drained... any1 has the similar issues??
Click to expand...
Click to collapse
You can try going to settings/applications/running services and turn off all non-essential services before putting it to sleep.
Mine doesn't get above 96%, will have to try the suggestions here but overall I'm still very happy with battery life of the 96%...
thanks, i'll definitely try that... but I don't think I have too much installed or services running since I flashed it with the new ROM.
have you guys notice your battery temperature? i got 2 gtab but both operating at different temperature 1 at 23-24 other is around 31?
My battery life seems pretty good even though it doesn't go higher than 95-96%. I saw in another thread to try resetting battery statistics in clockwork recovery to see if that will fix the battery display problems. I'm going to try that next.
I've got the Malata Zpad (SMB-1002-3G) and mine now wont go over 91% (happened on the 3rd day). It used to charge to 100% no problem for the first two days.
I did a recovery (format) when you press the power and volume up button, but that didn't seem to do anything (other than wipe all my settings and put it back to original factory settings of course)
I'm pretty sure the battery is fine, and lasts just as long, but it would be good to be able to reset the battery status.
PS: My Zpad is not rooted or anything. It's pretty much standard (just running Launcher Pro).
japhule said:
Drained battery and left it charging overnight and while I was at work (15+ hours) and its still at 95%. I wonder if I should exchange it now.... I'll give it another week....
Click to expand...
Click to collapse
Do you have Clockwork installed by chance? If you do you can charge the battery all the way up and then go into clockwork and reset the battery stats.
Might help...
I've got this problem with my tab (quick battery drainage). Symptoms would be your 100% charged tab would go down to 0% in unusual shorter time ( like 2-4 hours). You put it on charger and tab would be charged back to 100% again in substantial short time like 2-3 hours instead of 6-7 hours.
Well, after looking at this issue I think I have come up with solution.
At least, my tab looks like it's back on track... though, to say for sure I would need another couple days of testing.
The problem is not runaway wild application on a background but battery control circuit. This chip reports to OS much smaller battery capacity as it is for some reason. I will not go into details but here is what you need to try:
Flash stock kernel (may be custom kernel is not the reason for bad chip calibration and I'm 90% positive but just to be on safe side). You don't need to do factory wipe in OEM recovery for our purpose.
You also don't need to wipe batterystats.bin or use "Battery Calibration" apps from market (which does exactly the same wipe just in more end user friendly way). This wipe serves no other purpose then refreshing your usage statistics.
You also don't need to drain your battery all way down... nice, this way you don't have to wait for too long.
Well, here we go:
charge tab somewhere in between 80 and 100%.
edit: remove charger
shutdown tab (not put in hibernate/sleep) for 1 hour.
edit: turn tab on and run it for 30-40 min. or whatever it takes to drop charge to 40-50%.
shutdown tab again for 5 hours (overnight).
turn tab again and check... you should be fine now, charge it again 100% and use as usual.
That should do correct chip calibration.
PS: the reason why this chip calibration went bad at the first still remains open.
EDIT: just want to give a shortcut for those who does not feel like reading through the thread.
http://forum.xda-developers.com/showpost.php?p=16771651&postcount=41
Edit: here is calibration procedure which was modified down this thread ...
1. in CWM/recovery let it sit till battery in terminal will show less then 3700. The less you can get it the better. 3400 is probably absolute minimum.
2. shut down tab and let it sit for 1 hour.
3. plug it to charger and charge it for 5 hours.
4. disconnected charger and let it sit for 1 hour.
5. boot up your tab and test it, it your battery still not calibrated you can flash back your backup and repeat calibration procedure.
Edit: if you physically disconnect battery (you have to disassemble tablet) and keep it for couple min. that would trigger FG chip to start with default SOC curve.
Any follow up? Did this fix work for you since yesterday or anyone else?
yup, this is it...
This is how properly calibrate sg tab's batteries. There are some variations to the process but essentially battery will be calibrated in two measurements which stand apart by minimum 40% when battery is at rest on time intervals 1 and 5 hours.
No need to do factory reset, wipe batterystats, use battery calibrator apps from market or dance around with rain stick... all this will give same result as woodoo magic... though if by some reason battery calibration conditions are met then one may claim a miracle.
*sigh of relief* looks like this worked. More people that have this issue should now about this. Thank you for the fix.
Sent from my DROID2 using XDA App
Is this the same as the Sleep on Death (SOD) syndrome? that while charging it dies overnight and then you have to long press the power button and/or charge it to get it back?
Worked for me so far all good thanks
Sent from my GT-P7510 using XDA Premium App
Thanks will try this after flashing many custom roms I've been suffering from fast drainage which is not normal from when I had it on stock.
hyann said:
Is this the same as the Sleep on Death (SOD) syndrome? that while charging it dies overnight and then you have to long press the power button and/or charge it to get it back?
Click to expand...
Click to collapse
How long your tab usually works on one charge? if 8 and more hours - then no, I would think that there is a bug in Android charger control.
Vlad_z said:
yup, this is it...
This is how properly calibrate sg tab's batteries. There are some variations to the process but essentially battery will be calibrated in two measurements which stand apart by minimum 40% when battery is at rest on time intervals 1 and 5 hours.
No need to do factory reset, wipe batterystats, use battery calibrator apps from market or dance around with rain stick... all this will give same result as woodoo magic... though if by some reason battery calibration conditions are met then one may claim a miracle.
Click to expand...
Click to collapse
May I ask what do you mean by rest time intervals of 1 and 5 hours?
Does it mean that the calibration will only take place when the tab is off for 1 hour, then switch on and used till battery depleted by a further 40% minimum and the switch off for another 5 hour. Correct?
Also , is this 40% refer to value before or after calibration? I asked this because when I restart my tab the value changed (ex: 36% before restart to 53% after restart)
wlighter said:
May I ask what do you mean by rest time intervals of 1 and 5 hours?
Does it mean that the calibration will only take place when the tab is off for 1 hour, then switch on and used till battery depleted by a further 40% minimum and the switch off for another 5 hour. Correct?
Also , is this 40% refer to value before or after calibration? I asked this because when I restart my tab the value changed (ex: 36% before restart to 53% after restart)
Click to expand...
Click to collapse
Yes that's correct.
Fuel gauge chip will take 1 measurement of open circuit voltage and internal resistance only when battery is at rest (no charge/discharge) for at least 40min. - so I say 1 hour just to be sure...
Consecutive measurements, from which gauge chip can derive capacity of the battery have to be at least 40% and 5 hours apart.
Technically speaking, that 40% difference can be in either directions. Say you have 40% as of now, leave it in rest for 1 hour, then charge it to 100% and leave it at rest for 5 hours and you will have same result.
Condition "at rest" means voltage change less then 4mV (or mkV) per sec. - I don't remember.
When tablet is in sleep some background processes may awake tablet briefly and reset the 1 hour counter - so to make it work for sure, simply do shutdown.
if you want additional reading on my findings then look here:
http://forum.xda-developers.com/showpost.php?p=16615800&postcount=517
I tried this method...
1.Charged tab t0 80%, then shut down (removed charger) for 1 hour.
2.Turned on tab and played games for about 45min till battery was 49%.
3.Turned off tab and let sleep for 5 hours (charger still removed).
4.Turned tab back on and battery reads 79%, used for about 20min and battery reads 68%... Seems battery drain is still happening?
Right now i'm charging the tablet back upto 100% then perhaps try this method again... Did I do something wrong?
jzen said:
I tried this method...
1.Charged tab t0 80%, then shut down (removed charger) for 1 hour.
2.Turned on tab and played games for about 45min till battery was 49%.
3.Turned off tab and let sleep for 5 hours (charger still removed).
4.Turned tab back on and battery reads 79%, used for about 20min and battery reads 68%... Seems battery drain is still happening?
Right now i'm charging the tablet back upto 100% then perhaps try this method again... Did I do something wrong?
Click to expand...
Click to collapse
same problem im facing. This is why im wondering is the 40% value of before or after calibration. Because although it might drop 40% before calibration is done, the real drop value might be less then that. Which means to the chip it might just see a drop of example 20% of real drop and hence it didn't perform the calibration because conditions of 40% is nt met.
I did forget to flash back to the stock kernel (using pershoot's).
I just flashed to doc's slim 6.5 which has a modified stock kernel (couldnt find just the stock kernel and my internet is too slow to download the entire stock rom.). Going to try this method again but starting at 40%
1.Battery at 40%, shutdown tablet for 1 hour.
2.Charge tablet to 100% (while shutdown)
3.Leave tablet shutdown for 5 hours
4.Pray to droid gods, find my rain stick and begin dark resurrection ritual while watching true blood.
My only question now is... Should I turn the tablet back on after the 1 hour shutdown? Or should I leave it shutdown and just plug in charger till its 100% charged, then let it stay shutdown for 5 hours?
This is what worked for me:
1. Charged tab to 100% removed from charger.
2. Power down for 1 hour.
3. Power on (tab at 96%)
4. Drain to 46%
5. Power off for 5 hours
When I powered the tab back on after the 5 hours, i used it for a while and rebooted and the battery reading stayed the same which it wasn't doing before the calibration. It has been draining and charging at a normal pace since then and has remained the same after reboots and ROM flashes since the calibration.
FillTheVoid said:
This is what worked for me:
1. Charged tab to 100% removed from charger.
2. Power down for 1 hour.
3. Power on (tab at 96%)
4. Drain to 46%
5. Power off for 5 hours
When I powered the tab back on after the 5 hours, i used it for a while and rebooted and the battery reading stayed the same which it wasn't doing before the calibration. It has been draining and charging at a normal pace since then and has remained the same after reboots and ROM flashes since the calibration.
Click to expand...
Click to collapse
I'm going to go ahead and try this method right now! But for me... sometimes my battery will not charge unless the unit is shutdown (ever since battery issues started.). I hope this time it will charge while its on.
Also the instructions say to flash the stock kernel before trying this method... Did you do this? And were you able to flash back to pershoot's without issue?
*Update:
It doesn't look like its charging, (system on). Should I just shutdown and charge it to 100%? Then continue with said method? Anyone know if this method will work while tablet is shutdown through the entire process?
jzen said:
I'm going to go ahead and try this method right now! But for me... sometimes my battery will not charge unless the unit is shutdown (ever since battery issues started.). I hope this time it will charge while its on.
Also the instructions say to flash the stock kernel before trying this method... Did you do this? And were you able to flash back to pershoot's without issue?
Click to expand...
Click to collapse
My tab was charging while on, sometimes it wouldn't show it till after a reboot. I did mine from stock 3.1. (A backup I made before I took the TW OTA) I have not re-flashed pershoot's kernel and probably wont till the bug is worked out. I did however flash the deodexed stock TW and flashed a theme and have had no issues.
Edit: if its not chargin while on, i would charge it all the way while off then turn it on so it can read the battery then start the 1 hour power down.
Correction guys...
I was sure that our p7510 model was using TI bq20z75 fuel gauge chip but with new information looks like it's Maxim 17042 chip... It's embarrassing but I have to stay corrected. TI chip would calibrate itself in procedure outlined above as for Maxim - I don't know yet. I'm looking at it.
These are good and bad news. Good one - with this new fact, it's very possible that the reason of chip's SOC counter corruption is in software. Driver for Maxim is pretty messy and complex (because it's messy). In contrast driver for TI is simple and straight forward (because TI chip is smart). Software can be fixed but problem in hardware design not so easy.
Well, I will report back when I find something.
So, will FillTheVoid 's method work with my GT-p7510? :x
Vlad_z said:
Correction guys...
I was sure that our p7510 model was using TI bq20z75 fuel gauge chip but with new information looks like it's Maxim 17042 chip... It's embarrassing but I have to stay corrected. TI chip would calibrate itself in procedure outlined above as for Maxim - I don't know yet. I'm looking at it.
These are good and bad news. Good one - with this new fact, it's very possible that the reason of chip's SOC counter corruption is in software. Driver for Maxim is pretty messy and complex (because it's messy). In contrast driver for TI is simple and straight forward (because TI chip is smart). Software can be fixed but problem in hardware design not so easy.
Well, I will report back when I find something.
Click to expand...
Click to collapse
A lot of this is way over my head, but my battery calibration seems to be accurate, although I can't be absolutely sure because I have no stats from the previous calibration to compare it to. I do know for sure that after this process the bug of it draining then after reboot going back to what it should be is gone.
so i guess we need to flash back the stock ROM w/o TW for this procedure to work? I was trying the same steps with StarBurst + pershoot kernel it seem that it doesn't work. Anyone manage to calibrate with pershoot kernel?
Since Jelly Bean release ive noticed that the battery life hasnt really improved for me. Actually its gone to worse. Normally i dont use my tablet very active, so there were cases when i had 10 days between charges. No, even without using, the battery holds maximum of 4 days.
I dont have wifi lock, i have disabled backup, only have synchronisation of gmail and drive, but i had those on before aswell.
What i see in the battery graph is that even when wifi and display are off, something still wakes the tablet every 10-15 mins or so and drains the battery. In the stats it says that the "Standby mode" has the most usage...
Could anyone help me with some app to diagnose that problem or share similar expiriences..
Ubichinon said:
Since Jelly Bean release ive noticed that the battery life hasnt really improved for me. Actually its gone to worse. Normally i dont use my tablet very active, so there were cases when i had 10 days between charges. No, even without using, the battery holds maximum of 4 days.
I dont have wifi lock, i have disabled backup, only have synchronisation of gmail and drive, but i had those on before aswell.
What i see in the battery graph is that even when wifi and display are off, something still wakes the tablet every 10-15 mins or so and drains the battery. In the stats it says that the "Standby mode" has the most usage...
Could anyone help me with some app to diagnose that problem or share similar expiriences..
Click to expand...
Click to collapse
I resolved my battery problems using Wakelock Detect:
https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector&hl=en
You might want to give it a try. Turned out that some badly written application was holding wake lock on my XTS and thus jeopardizing the battery life. I also use Battery Monitor Widget:
https://play.google.com/store/apps/details?id=ccc71.bmw
It won't tell you source of the problems but it will tell you how much battery is drained when your device was sleeping.
jappaj said:
I resolved my battery problems using Wakelock Detect:
https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector&hl=en
You might want to give it a try. Turned out that some badly written application was holding wake lock on my XTS and thus jeopardizing the battery life. I also use Battery Monitor Widget:
https://play.google.com/store/apps/details?id=ccc71.bmw
It won't tell you source of the problems but it will tell you how much battery is drained when your device was sleeping.
Click to expand...
Click to collapse
Thanks mate, gonna give these a try
Ubichinon said:
Thanks mate, gonna give these a try
Click to expand...
Click to collapse
Btw. for WLD enable advanced mode from settings. It was system process which was holding wake lock and by default, WLD does not show system processes at all (!!!).
batery life always been awfull on XTS it was't bad but it could last easy 3 day's on single charge if sony optimise it.
my nexus 7 i can easy achieve 2 day's on single charge maybe 3 day's and it only has like 4200 mah batery with wifi actualy staying on always.
now in standby only drains like 1% batery per 3 hours
XTS always drained 2% per hour for me in standby
Zer0K3wL said:
XTS always drained 2% per hour for me in standby
Click to expand...
Click to collapse
Wtf, that would drain the battery in two days?! Definetly some program has wake loke on your device. I havent done any measurements, but I think I've left my device on my table for week and read E-mails every now and then without any charge and it still has some juice left!
Zer0K3wL said:
batery life always been awfull on XTS it was't bad but it could last easy 3 day's on single charge if sony optimise it.
my nexus 7 i can easy achieve 2 day's on single charge maybe 3 day's and it only has like 4200 mah batery with wifi actualy staying on always.
now in standby only drains like 1% batery per 3 hours
XTS always drained 2% per hour for me in standby
Click to expand...
Click to collapse
Actually on ICS i had one time when i had 18 days of standby and i used the tablet occasionally
Update on thread:
I found out Google Maps was waking the sysem every 10-15 minutes to look for a location, even tho GPS and Wifi were off. I disabled Latitude and automatic locking on location and also disabled every location option possible (use wifi to lock location etc.) and now its better..
My HAM2 is reporting battery level incorrectly. It keeps on going normally till about 35% and then within a few minutes, it drops down to zero and turns off. I have used the battery calibration app to try to reset the battery stats but to no avail, the problem persists. Any help will be appreciated. The ham2 is rooted and TWRP installed.
sagarone said:
My HAM2 is reporting battery level incorrectly. It keeps on going normally till about 35% and then within a few minutes, it drops down to zero and turns off. I have used the battery calibration app to try to reset the battery stats but to no avail, the problem persists. Any help will be appreciated. The ham2 is rooted and TWRP installed.
Click to expand...
Click to collapse
While not to the same degree, I notice once I get to about 10%, it's a crap-shoot as to whether I'm going to get another hour or so or 10 minutes. The longer I have this phone, the more I notice it's a buggy mess.
sagarone said:
My HAM2 is reporting battery level incorrectly. It keeps on going normally till about 35% and then within a few minutes, it drops down to zero and turns off. I have used the battery calibration app to try to reset the battery stats but to no avail, the problem persists. Any help will be appreciated. The ham2 is rooted and TWRP installed.
Click to expand...
Click to collapse
That is usually a sign of a damaged battery.
Mine is only week old but I've run down under twenty percent and it's drained and dropped consistently. Might contact Huawei since it has two year warranty.
I'll run mine down today and see what I experience.
Sent from my MT2L03 using XDA Free mobile app
27% all seems fine. I'll watch netflix for a while and check again.
Sent from my MT2L03 using XDA Free mobile app
19% all battery stats report the same. Still watching Netflix. Seems you may have either done something to cause report errors or it is indeed a faulty battery. Good luck
Sent from my MT2L03 using XDA Free mobile app
Try recalibrating your battery, if your phone is reporting incorrect charge. The BMS within the battery might need reset.
When your phone is down to "critical level" (before the phone is ready to turn off) reboot into Recovery Mode. Let phone sit and drain until it empties.
Once empty, let sit for 4 hours. This will reset the "low value".
Charge with phone off to 100%, leave phone off. Unplug and let sit off for another 4 hours. Turn phone back on and use as normal, the battery *should* be recalibrated. The reason for waiting is to redefine a "high" and "low" charge state. If current is constantly being supplied or drained, then it will see those values as a "blip" rather than a calibration number.
It isn't always a bad battery, sometimes it's just miscalibrated.
Quick Drain after 15% Is Reached.
volcolm said:
Try recalibrating your battery, if your phone is reporting incorrect charge. The BMS within the battery might need reset.
When your phone is down to "critical level" (before the phone is ready to turn off) reboot into Recovery Mode. Let phone sit and drain until it empties.
Once empty, let sit for 4 hours. This will reset the "low value".
Charge with phone off to 100%, leave phone off. Unplug and let sit off for another 4 hours. Turn phone back on and use as normal, the battery *should* be recalibrated. The reason for waiting is to redefine a "high" and "low" charge state. If current is constantly being supplied or drained, then it will see those values as a "blip" rather than a calibration number.
It isn't always a bad battery, sometimes it's just miscalibrated.
Click to expand...
Click to collapse
I have this problem too. When my battery gets down to about 15%, I get a warning that I must plug in my charger immediately. I have to do it within 15 seconds or so or my battery plummets all the way to 0% and shuts down the phone. My phone is not rooted, so I don't think I have a "Recovery Mode". Or do I? Would I use the same procedure and be able recalibrate my battery ? When I restart my phone by regular (unrooted) startup after a 100% charge and 4 hour wait, would I get a Recovery Mode option or not? If not would it still recalibrate the battery?
How much are you guys losing overnight ? I'm draining about 1%/hr in stand-by now (deep sleep) , I remember I used to lose max 2% overnight awhile ago
icyboyice said:
How much are you guys losing overnight ? I'm draining about 1%/hr in stand-by now (deep sleep) , I remember I used to lose max 2% overnight awhile ago
Click to expand...
Click to collapse
Google made some changes recently in its services that has had a negative effect on battery life. I am sure they will fix it. Lots of people complaining about it on a lot of different devices.
icyboyice said:
How much are you guys losing overnight ? I'm draining about 1%/hr in stand-by now (deep sleep) , I remember I used to lose max 2% overnight awhile ago
Click to expand...
Click to collapse
I checked last night and I lost 2% over 7 hours. I'm using an L05 so I dunno how much of a difference that makes.
tomlemange said:
I checked last night and I lost 2% over 7 hours. I'm using an L05 so I dunno how much of a difference that makes.
Click to expand...
Click to collapse
Yea this was similar to my drain months ago . Eh idk why it's changed . Have had the same setup all this time , with amplify (wakelocks/alarm blocker) and deep sleep when screen off (PowerNap) . I have switched the sim to at&t (previously T-Mobile) .. Though both have a similar signal range at home . Not sure , will try with a t mobile sim again and will compare .
Sent from my LGLS996 using XDA Free mobile app
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.