Develop Bugs

[Q] battery dead at 15% and green led at 90%

hello mates,
I have rooted my htc desire and installed redux 1.2 ROM(gingerbread) with a ManU kernel...When charging the LED changes to green precisely at 90% (which i dont have a major problem with as it will go all the way to 100% if kept on charge)..also the phone will die at 10-15% of battery...I have read other threads regarding this same problem and am wondering if its a calibration error or is the problem with gingerbread ROMs as someone pointed out...Otherwise the battery is fine...and gives me a decent 1-2 days of use with moderate usage...its jus the problem abt the 15% n going dead which is a lil troublesome as the fone has died on me many a time for that last important msg, call or IM...any help appreciated...cheers..

That's not really a problem. The green LED at 90% is normal for android (try to fix it with battery calibration, helps sometimes) and the shutdown at 10-15% is also normal. Just take the last one how it is, all batteries are different. Some phones shut down at 5%, others at 20%.

Please use the Q&A Forum for questions Thanks
Moving to Q&A

noticed this on ICS dev rom too but also had it on my old G1

wipe cache,battery stats try diffrent kernel

stupidflanders1 said:
hello mates,
I have rooted my htc desire and installed redux 1.2 ROM(gingerbread) with a ManU kernel...When charging the LED changes to green precisely at 90% (which i dont have a major problem with as it will go all the way to 100% if kept on charge)..also the phone will die at 10-15% of battery...I have read other threads regarding this same problem and am wondering if its a calibration error or is the problem with gingerbread ROMs as someone pointed out...Otherwise the battery is fine...and gives me a decent 1-2 days of use with moderate usage...its jus the problem abt the 15% n going dead which is a lil troublesome as the fone has died on me many a time for that last important msg, call or IM...any help appreciated...cheers..
Click to expand...
Click to collapse
You should try calibrating your battery for the 10-15% dying problem.
And as for the 90% LED changing to green, all AOSP ROMs do that, so no worries there

What worked for me was charging it while the phone is on, when the LED turns green, power it off and charge it again till it turns green.
Repeat this twice and then reboot.

galdel said:
What worked for me was charging it while the phone is on, when the LED turns green, power it off and charge it again till it turns green.
Repeat this twice and then reboot.
Click to expand...
Click to collapse
This is to calibrate the battery. Some people find it useful to run a program called BatteryRepair, in my case I noticed a clear improvement on battery performance.
To avoid calibration problems with the battery, remember to unplug your phone when you flash a new rom!
Tapatalking

Turning off at 15% of battery with Supernova 2.4 ROM
I am using Supernova Xtreme 2.4.0.0 ROM, and my phone turns off at 15% of battery. My battery is freshly calibrated and this problem did not occured with LeeDroid ROM and with the stock ROM neither. On the Droidzon page I have found some info in FAQ section, which says the following:
Question: Recently I let my battery go completely flat. When I switched my handset back on I was bombarded with forced close messages.
This has been reported once previously, but could not be reproduced under Sibere’s extensive testing under similiar conditions. For the same reason, unfortunately, we dont have a solution too. The OS is supposed to prevent a complete drain, and to shutdown at 15% and then 5%. The shutdown at 5% is supposed to be forced too. If it shutdowns, then this issue shouldnt occur. Data2SD depends on a normal shutdown to prevent data corruption. Once Data corruption has occured due to untidy shutdown, data is not unmounted cleanly, and then the issue can recur on every subsequent boot, which would require a complete reinstall.​
So it seems to be normal, connected to the ROM, and NOT connected to my battery (it is calibrated).
My question is (which goes to Droidzone firstly), what should I do, if I want to use this ROM, but I do not want it to turn off at 15% rather I want it to turn off my phone at 2%?

Sofokles_ said:
I am using Supernova Xtreme 2.4.0.0 ROM, and my phone turns off at 15% of battery. My battery is freshly calibrated and this problem did not occured with LeeDroid ROM and with the stock ROM neither. On the Droidzon page I have found some info in FAQ section, which says the following:
Question: Recently I let my battery go completely flat. When I switched my handset back on I was bombarded with forced close messages.
This has been reported once previously, but could not be reproduced under Sibere’s extensive testing under similiar conditions. For the same reason, unfortunately, we dont have a solution too. The OS is supposed to prevent a complete drain, and to shutdown at 15% and then 5%. The shutdown at 5% is supposed to be forced too. If it shutdowns, then this issue shouldnt occur. Data2SD depends on a normal shutdown to prevent data corruption. Once Data corruption has occured due to untidy shutdown, data is not unmounted cleanly, and then the issue can recur on every subsequent boot, which would require a complete reinstall.​
So it seems to be normal, connected to the ROM, and NOT connected to my battery (it is calibrated).
My question is (which goes to Droidzone firstly), what should I do, if I want to use this ROM, but I do not want it to turn off at 15% rather I want it to turn off my phone at 2%?
Click to expand...
Click to collapse
I'm afraid this is not similiar to the issue in the FAQ. Your issue is that phone shutsdown at a level earlier than expected. The Data corruption issue is because the phone did not shutdown at the expected level and went down to as far as zero level of the battery, which resulted therefore in an untidy shutdown with no sync or clean unmount of data2sd partition, and hence ext4 errors. The 15% shutdown level is a normal soft shutdown prompt (which was missing in case of the issue reported by the user). The shutdown at 2% is the normal forced shutdown by OS.
As I said previously, your issue seems to be due to a poorly calibrated or defective battery, and it would help to do a calibration as per guides on XDA. If this fails, have the battery checked. To reiterate, it's not a rom issue and not something like a bug in the rom.

Thanks. So normally the phone with Supernova ROM should turn off at 15%. After that I have to be able to turn it on again, and use it till it drains to 2%, and shuts down finally.
For me it just shuts down at 15% and then when I switch it on and it boots up, the battery level shows 0% and it shuts down immediately.

Sofokles_ said:
Thanks. So normally the phone with Supernova ROM should turn off at 15%. After that I have to be able to turn it on again, and use it till it drains to 2%, and shuts down finally.
For me it just shuts down at 15% and then when I switch it on and it boots up, the battery level shows 0% and it shuts down immediately.
Click to expand...
Click to collapse
No, a normal rom would popup a warning at 15%, asking the user to shutdown. If he doesnt, it would continue, and then give additional warnings, and finally do a forced shutdown at 2%. If it shutsdown before that forcibly, it's something peculiar to your hardware.

Ooops, so Supernova ROM should behave exactly the same way as a stock ROM (or any other) does in terms of warnings and shutdows.
I might try to do something with battery calibration. Should I do it before or after flashing Supernova? Or it does not matter? If I flash a new ROM, does it delete battery logs or it stays as it was before flashing?

Sofokles_ said:
Ooops, so Supernova ROM should behave exactly the same way as a stock ROM (or any other) does in terms of warnings and shutdows.
I might try to do something with battery calibration. Should I do it before or after flashing Supernova? Or it does not matter? If I flash a new ROM, does it delete battery logs or it stays as it was before flashing?
Click to expand...
Click to collapse
Correct. For all intents and purposes, Supernova is exactly like a Stock rom. Difference is only in where internal apps are stored.
The so called calibration is just a file at /data, which means it will be wiped when you do a wipe for rom install.

[Update] Problem solved. I flashed UOT battery MOD after first boot (not before). Now it works perfectly.
A flashed the ROM again, did the battery calibration several times, but the phone keeps turning off at 15%. I checked battery voltages at different levels of battery, and I experienced that at 16% it is 3635 mV, then it turns off below 15%. When I turn it on, battery level is 0% and the voltage is 3390 mV, and when it is charged up to 1% it is 3723 mV, which is higher than it was at 16%. What is wrong here? Actually I use UOT kitchen battery MOD, can this confuse the system somehow?

[Q] Battery info missing - anyone seen this before?

Was taking a look at my battery info this morning, when I noticed something very strange (see attached picture).
As you can see, the battery usage graph is there as normal - but there's no info displayed below it with regards to what apps are consuming the battery. Most annoyingly, there's also no obvious way to check the screen-on time.
Any ideas? Anyone seen this before?
I'm running MiNCO v4 with Franco's latest nightly 246, but flashing back to Milestone 5 didn't help. Neither did wiping cache/dalvik, fixing permissions or reflashing the ROM.
I guess the next step is to do a factory wipe, but I'm reluctant to do so because it's a real pain in the behind.

Try to wipe only the battery stats in recovery

Just had this happened to me on Moto Atrix HD running JB 4.1.1ATT original ROM on T-mobile service, rooted, bootloader unlocked. All aforementioned configurations put in place well before loosing batter stats. The only other "fix" I've seen for this was a ROM restore. Did you have any luck fixing this by factory wipe or other method?
D'oh! The per-application battery stats came back at the next full charge. On thing that can throw this off is that some battery meters report 100% at a point when the android system does not yet consider it full and if you stop charging at that point the stats may not refresh.

Sailor Saucy said:
Was taking a look at my battery info this morning, when I noticed something very strange (see attached picture).
As you can see, the battery usage graph is there as normal - but there's no info displayed below it with regards to what apps are consuming the battery. Most annoyingly, there's also no obvious way to check the screen-on time.
Any ideas? Anyone seen this before?
I'm running MiNCO v4 with Franco's latest nightly 246, but flashing back to Milestone 5 didn't help. Neither did wiping cache/dalvik, fixing permissions or reflashing the ROM.
I guess the next step is to do a factory wipe, but I'm reluctant to do so because it's a real pain in the behind.
Click to expand...
Click to collapse
I would gohead with the factory wipe. Do the job right the first time I say

Before going through all the trouble of a factory wipe, if you have not done this already:
Charge the phone until the native battery information screen says 100% and "Full" (or something other than"Charging"). In my case the native battery information screen and 3rd party battery stats app would react to the event of battery reaching 100% but, at that point although the battery screen said 100% it also said charging (as in attached pic). At this point the battery is not at maximum charge until battery screen says 100% and Full.
That it may be better for the battery not to reach maximum charge each time is another story.
View attachment 2699174

Battery Issue on my G2

Im having a sudden battery issue with my G2 that started about 2 weeks ago. Im currently running 2.3.4 and have been for a while now. When using my phone at near full charge, it randomly shuts down. When it restarts it states I have less than 2% power and the red "x" is at the top. A few seconds later it shuts down again as it if it has no power. The only way to correct this is to remove the battery completely and reboot. Once I reboot, the battery level goes back to a normal state or it will read somewhere near 50%. Ive also noticed the following: the battery will charge VERY slowly. Sometimes overnight it still won't say fully charged. I've done the following to try to fix:
1. I replaced the battery with a brand new one. Same issues right off the bat.
2. Wiped my phone and reinstalled.
3. Checked to see if any APP was draining the battery or causing the issue. None are!
I've seen this issue reported by other G2 users on the Tmobile Support forum and none of them have gotten any solid results. I've browsed this forum some and couldn't find it either, unless i missed it.
Any help is appreciated!
Lou

louballs said:
Im having a sudden battery issue with my G2 that started about 2 weeks ago. Im currently running 2.3.4 and have been for a while now. When using my phone at near full charge, it randomly shuts down. When it restarts it states I have less than 2% power and the red "x" is at the top. A few seconds later it shuts down again as it if it has no power. The only way to correct this is to remove the battery completely and reboot. Once I reboot, the battery level goes back to a normal state or it will read somewhere near 50%. Ive also noticed the following: the battery will charge VERY slowly. Sometimes overnight it still won't say fully charged. I've done the following to try to fix:
1. I replaced the battery with a brand new one. Same issues right off the bat.
2. Wiped my phone and reinstalled.
3. Checked to see if any APP was draining the battery or causing the issue. None are!
I've seen this issue reported by other G2 users on the Tmobile Support forum and none of them have gotten any solid results. I've browsed this forum some and couldn't find it either, unless i missed it.
Any help is appreciated!
Lou
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Click to collapse
Power down and charge 'til it thinks it's fully charged (should be a green light). If it doesn't show a green light (like you said, it won't fully charge), just leave it charge for a while (overnight would be good). Boot into recovery, either by booting Android + rebooting recovery or by rebooting recovery through bootloader, go to advanced and select wipe battery stats... I think CWM 5 still has this option (don't know about 4EXT)
zeppelinrox has a battery calibrator script which is useful and can automatically delete battery stats once fully charged... I can't find it though. I'll attach / PM it if you need it.
BTW I'm not sure if this is the problem, it could be hardware related. I'd try it though, it might help.
If all else fails and you're sure it's not a hardware problem, I'd do a factory reset and /or reflash ROM.

HTCDreamOn said:
Power down and charge 'til it thinks it's fully charged (should be a green light). If it doesn't show a green light (like you said, it won't fully charge), just leave it charge for a while (overnight would be good). Boot into recovery, either by booting Android + rebooting recovery or by rebooting recovery through bootloader, go to advanced and select wipe battery stats... I think CWM 5 still has this option (don't know about 4EXT)
zeppelinrox has a battery calibrator script which is useful and can automatically delete battery stats once fully charged... I can't find it though. I'll attach / PM it if you need it.
BTW I'm not sure if this is the problem, it could be hardware related. I'd try it though, it might help.
If all else fails and you're sure it's not a hardware problem, I'd do a factory reset and /or reflash ROM.
Click to expand...
Click to collapse
Thanks for the tip. I had already deleted the battery stats bin file from the system and rebooted and received the same results (assume thats what your fix does). I've also reinstalled the rom and had no issues. Ive done searches and found that SEVERAL other people with the G2 had this issue. Kind of surprised it hasnt yet been addressed on this forum. Back in 2011 Tmobile was asking for people to volunteer some info in order to fix it. Apparently nothing was ever done and when i call in (several times), no one seems to know what im talking about even when i point them in the direction of their own forums. I'm really at a loss and don't feel like paying out the a$$ for a new phone when I know this is not something I did.

Wrong state of charge calculation by android

I've i9195 with stock battery and rom, all was normal. Then I replaced it with double sized battery+new back cover. Not a microUSB batterycase. After many cycles and weeks of use it still didn't calibrated to new capacity. Fully charged battery lasts about a day and phone shuts down. If I switch it back ON after couple of minutes - I see 50% charged and can use phone another day.After second 'full discharge' I'll have about 15% more. All techniques for 'calibrating' battery with deleting batterystats doesn't work. Charge, off, remove bat, wait, place it back - either. /sys/class/power_supply/battery/uevent have string POWER_SUPPLY_ENERGY_FULL=1940000000 and it is always the same. So phone simply downcount from this level and tells that charge is 0% while voltage is about 3.7v. Interesting that "energy_full" file has number of 3880000000 but it seems that it's not used in calculations.
After all I installed CWM, root, cyanogenmod 11 and used it for about a week. SAME problems, except that "energy_full" is 1940000000.
I want to solve this very much, I can program or recompile kernel, if needed. It's pm8921 charger ic there. Maybe this number was programmed in it in factory mode or smth. Maybe threis a way to correct it. Thanks in advance.

Same here with stock-rom, CyanogenMod and MoKee's rom.
I think the only way will be to recompile the used kernel with the correct value of 3880000000 instead of 1940000000 in file "drivers/power/pm8921-bms.c" in kernel sources (function "calculate_fcc_uah", part "scalefactor". Scalefactor has to be change into scalefactor *= 2.
Huge work for a little problem...

Instead of making any advanced config, have you tried this little app (needs root privileges)?
https://play.google.com/store/apps/details?id=com.nema.batterycalibration
After migrating to CM11 my battery was draining very fast. I used this app and it apparently fixed a part of the issue (battery still drains fast, but not as fast as before).

BATTERY NOT CHARGING - S4 MINI i9190

Hi
I flashed lineage 14.1 OS over the manufacturers stock ROM about 3 weeks ago. The Lineage ROM had issues BUT the battery was still charging normally. (Worth noting that the battery was also charging perfectly fine on when the manufacturers Rom was still installed). Seeing as Lineage 14.1 had a host of other issues, I then flashed AOKP's version of Pie with GAPPS Micro. At first, the battery would charge until 53%. However after it drained to 0%, it has not charged properly since. (6 days or so).
A) Battery is about 6 months old, so relatively new
B) non-charge problem started with installation of AOKP version of Pie
C) I have used a couple of battery health apps,which reveal the following:-
c.1) Battery health is fine
c2) Voltage 3.5V (essentially 0% charge)
c3) amperage averaging around 30mA
c4) Battery Manager and other apps state that the battery is "connected but not able to charge"
D) I have tried deleting the batterystats.bin file, which had no affect
E) I have tried using recalibration apps off Google Play Store with no affect.
F) I have cleaned the USB port and tried different cables, also with no affect.
I'm going to try flash another OS shortly. Other than that my last idea is to purchase a new battery. HOWEVER just thought I'd ask if anyone has any other bright ideas as to what might have happened to a perfectly functional battery? Another thing worth mentioning is that the power button on this device doesn't 'click' anymore. So one cannot feel that the button has been pressed, you have to press harder to ensure that the device powers on. It was like that for a long time before this battery problem started but thought I'd mention it. Can a faulty power button be causing a massive power drain on the battery OR be stopping it from charging?
EDIT - when the phone is off and plugged in to the charger, the battery icon shows it as "charging". However if I leave it for a few hours and switch the phone on again, it still reflects as 0% charged and only switches on with the power cable attached. Also I cannot get into recovery mode, after shutting down, unless I leave the phone plugged in and "charging" for a while. It's like recovery mode needs at least some power from the battery.

Debcal said:
Hi
I flashed lineage 14.1 OS over the manufacturers stock ROM about 3 weeks ago. The Lineage ROM had issues BUT the battery was still charging normally. (Worth noting that the battery was also charging perfectly fine on when the manufacturers Rom was still installed). Seeing as Lineage 14.1 had a host of other issues, I then flashed AOKP's version of Pie with GAPPS Micro. At first, the battery would charge until 53%. However after it drained to 0%, it has not charged properly since. (6 days or so).
A) Battery is about 6 months old, so relatively new
B) non-charge problem started with installation of AOKP version of Pie
C) I have used a couple of battery health apps,which reveal the following:-
c.1) Battery health is fine
c2) Voltage 3.5V (essentially 0% charge)
c3) amperage averaging around 30mA
c4) Battery Manager and other apps state that the battery is "connected but not able to charge"
D) I have tried deleting the batterystats.bin file, which had no affect
E) I have tried using recalibration apps off Google Play Store with no affect.
F) I have cleaned the USB port and tried different cables, also with no affect.
I'm going to try flash another OS shortly. Other than that my last idea is to purchase a new battery. HOWEVER just thought I'd ask if anyone has any other bright ideas as to what might have happened to a perfectly functional battery? Another thing worth mentioning is that the power button on this device doesn't 'click' anymore. So one cannot feel that the button has been pressed, you have to press harder to ensure that the device powers on. It was like that for a long time before this battery problem started but thought I'd mention it. Can a faulty power button be causing a massive power drain on the battery OR be stopping it from charging?
EDIT - when the phone is off and plugged in to the charger, the battery icon shows it as "charging". However if I leave it for a few hours and switch the phone on again, it still reflects as 0% charged and only switches on with the power cable attached. Also I cannot get into recovery mode, after shutting down, unless I leave the phone plugged in and "charging" for a while. It's like recovery mode needs at least some power from the battery.
Click to expand...
Click to collapse
Does anyone know of a battery app/ software that one can run in recovery mode OR prior to booting? I'm wondering if this battery problem is software related or hardware related.

Debcal said:
Does anyone know of a battery app/ software that one can run in recovery mode OR prior to booting? I'm wondering if this battery problem is software related or hardware related.
Click to expand...
Click to collapse
Now, it appears, I cannot even boot into TWRP recovery. I suspect the non-charging battery is the problem.

Debcal said:
Now, it appears, I cannot even boot into TWRP recovery. I suspect the non-charging battery is the problem.
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Click to collapse
You won't believe it!!! After trying every solution known to man, turns out that the battery just doesn't sit snugly in the phone, so it doesn't make good contact. ???*♂??
Charging now that I manually pushed it up against the contacts.