Develop Bugs

[Q] HELP! HTC EVO 4G battery wont charge fully even after wiped battery stats!

welcome all who see this. alright, my phone is rooted, and i went to upgrade to gingerbread and i used the mikg rom 2.5:1-2. unfortunately i erased the battery stats not paying attention and talking. from then....the phone battery never charges.....even when plugged in it constantly sinks to nothing. even when i charged it turned off for 6 hours, it never gets past 15% HELP! i have tried to rewipe the battery stats, but i only get past draining the battery, because now it wont fully charge. i even bought an extended battery which also drains, but never charges! i am not sure what to do to get battery stats up to par, or to cause this phone to charge any battery! CAN SOMEONE PLEASE HELP! (much appreciated)

im a noob here so i really dont know what im talking about but i had almost the same problem when i bought my extended battery from sprint. first day of use was really good and when i went to charge the next time as soon as i unplugged the charger after a full charge the % would drop soo much...i was getting like 10 hrs which isnt much with an extended battery. i updated to mikg 2.53 and wiped the cache and all the usual and the battery stats and its seem to workin now 1d 4h 54m on battery....hopefully this helps

Use an external wall charger or a different phone to fully charge the battery. Then insert the battery and immediately wipe battery stats.
Should fix the problem.
Using an sbc kernel will allow you to fully charge the battery as well. Use something like Battery Monitor Widget to keep an eye on your charge - 4200mv is fully charged.
Sent from my PC36100 using Tapatalk

It almost sounds like a problem with the phone. I wipe battery stats everytime I flash a new Rom and I've never had problems. You might want to see if the battery will charge on someone else's phone first.
Sent from my PC36100 using xda premium

is this normal?

i have flashed multiple Roms, and i will admit i have never went through with the FULL battery calibration, but one thing i have gotten after each rom/kernal install is, after charging full, and wiping battery stats, it seems with just little usage my gnex drops so fast, even with screen down, on wifi, just texting...i can literyly watch the battery drop.
is this normal since it has not been fully calibrated? if i let it completey die after wiping battery stats, will the battery drop significanly slower? i has tested this with both batterys, ext, and standard
THIS is my ONLY gripe and the ONLY reason i would return it..
Thanks..

If you're basing your battery off of the first few discharges after a rom install.. it is bound to be pretty bad. You can just go from full to empty and then charge to 100 to calibrate it.

dvigue said:
i have flashed multiple Roms, and i will admit i have never went through with the FULL battery calibration, but one thing i have gotten after each rom/kernal install is, after charging full, and wiping battery stats, it seems with just little usage my gnex drops so fast, even with screen down, on wifi, just texting...i can literyly watch the battery drop.
is this normal since it has not been fully calibrated? if i let it completey die after wiping battery stats, will the battery drop significanly slower? i has tested this with both batterys, ext, and standard
THIS is my ONLY gripe and the ONLY reason i would return it..
Thanks..
Click to expand...
Click to collapse
That doesn't seem normal. I'm getting as good battery life as you can ask for with this giant screen. I recommend checking out the android revolution thread in the development section. Mike has posted a few links to threads that really detail how to maximize battery life. You may see your battery life increase after a week or so of usage. Good luck.
Sent from my Galaxy Nexus using xda premium

Problem with battery.

Hello all,
Before some days I came back to GB from ICS and my "Android System" drains much battery. I installed mexdroid and I changed to elitemod to see if it is mexdroid's problem, but I got the same problem with elitemod. (After 4~ hours discharging with 2-3 calls and 15 minutes play game only, I got 60% battery.) Does anyone know what is going on? Thank you.
Sent from my HTC Vision using XDA

Well, you could order a new battery for next to nothing and see if that helps. If not, try flashing a new kernel. I had a battery drain issue on a gb rom before i went to ics. I have had amazing battery life with ics.
Sent from my HTC Desire Z using xda premium

Remember that every time you flash a new ROM, you need to do a couple battery cycles in order for the battery meter to recalibrate. Charge the phone to 100% (leave it on the charger for a while to make sure its really full) then use normally until about 10 or 20% (don't drain to zero, as this is not good for Li ion batteries). Repeat a couple times. Your battery meter is not accurate until you do this.

Thank you I will try this and I will report back to tell you if the problem exists

I usually let the battery drain until its almost dead before charging right after flashing a rom.

Yes you should definitely charge to 100 and let it drain to dead. That will calibrate it. Then just charge it back up.
Sent from my HTC Desire Z using xda premium

[Q] New battery problems

Hi guys
recently i bought new battery because my old one used to jump
from 70% to 100% and had really bad battery life.
i replaced the battery and calibrated it and i noticed that the 20% from 100% to 80% goes down realy fast
should i recaibrate the battery?
what should i do? thanks!

It depends on the rom u r using.
All roms except stock based roms have this problem.
Sent from my GT-S5660 using Tapatalk 2

Im using aosp by maclaw studios
the weird thing is that the 70% acts like it 100% and im having really good battery life
from 70%

Its a problem in sumsung charge system.
In custom roms when u full charge battery it is about 80 % charged.
Sent from my GT-S5660 using Tapatalk 2

I think you should charge it when the phone is turned off. I noticed that my phone tells me it is "Charged" when it is turned on. However the actual percentage in Go Power Master is 80%.
Sent from my GT-Xperia S using xda app-developers app

so it has nothing to do with the battery quality and the battery calibration?
the problem will not appear in the stock rom?

Thats if needed. To check if the battery is fully charged, try these step.
1. Charge the when it is running until it says "Charged".
2. Turn off the phone and keep the charger plugged in.
3. The battery image will appear. If it is not full, wait till it full. When it shows 100% then it is fully charged.
Note that powering up the phone takes some significant amount of battery. If the battery is still draining fast. Calibrate may be needed.
Sent from my GT-Xperia S using xda app-developers app

enchanced rom shows 100 percent but still shows charging. So I guess it fully charges

Well the battery level seems to be jumping unusually from time to time . What i do is i wipe the battery stats from cwm , i leave it over night to fully charge without doing anything to it , calibrate the battery with `battery calibration` from playstore , full discharge and full charge again . I do this after each rom that i flash and it seems to do good and seems to point the right amount. Anyway the charge lasts as i hope it lasts , from 1 day if i do stuff with it like some wifi , some messaging , many minutes of calls .... to about 3 days if i do only calls. Cheers

[Q] Insane Battery Drain i747

Over the course of months of flashing, I have noticed that my battery life drains really fast. I'm currently running AOKP. I think I calibrated the battery correctly yet I still have terrible battery life. I charged it to 100%, used an app, Battery Calibration, to reset the battery stats, let it drain to 0%, the plugged it back in. The battery said 57% so I charged it back to 100% yet the battery life is still awful. My brightness is at the lowest setting, my WiFi is off, and I am using Greenify to hibernate applications. I've attached pictures of my battery life (from GSam) and pictures of what my software looks like. What is causing the drain? How can I fix it? If anybody can help, I'd be very thankful.
Edit: I have a Hyperion 4200 mAh battery. I replaced the stock battery but it didn't seem to make a difference. The voltage reads at about ~4200 mAh when at 98%.
Edit 2: My battery was at ~60% then I shut it off and plugged it in. It is now at 2%... Should I charge to 100% then reset battery stats?