[Q] Battery reset - EVO 4G Q&A, Help & Troubleshooting

Hello I have a question about how I can reset my battery. I just flashed a new rom and my battery was around 70 ish percent, so I made another backup file of my new rom. After I completed the backup and renooted my phone the battery life showed itsef at 100% ans sees to die really fast. Is there anyway to return it to normal?
Sent from my PC36100 using XDA App

cheeeya said:
Hello I have a question about how I can reset my battery. I just flashed a new rom and my battery was around 70 ish percent, so I made another backup file of my new rom. After I completed the backup and renooted my phone the battery life showed itsef at 100% ans sees to die really fast. Is there anyway to return it to normal?
Sent from my PC36100 using XDA App
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Charge to phone to 100%, boot into recovery, wipe battery stats, reboot into the phone. Use the phone til it completely dies, i.e. manually power off, then charge it back to 100%. If you undervolting or using other mods and your charging led blinks, its okay, it'll do that for a minute and turn solid. Again, charge it to 100% and you'll be good.

Only wipe battery stats when u are at 100% charge.
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Related

When to wipe battery stats?

I've seen other threads, but I didn't like the answers. If I am going to load CM6.1 RC1 tonight, when should I wipe battery stats?
Great question. Was going to post this today as well. Since I got the extended battery yesterday from sprint.. so anyways I drained treatment battery instead of charging fully.. then I charged fully and did treatment HTC battery tweak.. then I wipe battery stats and turned on.. now will it fully charge my extended battery since I deleted stats and its been fully charge (I hope so.. 11 hours at 45%) and I drain it till its dead..?
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I wiped at full charge. Let it drain all the way until phone shuts down. Recharge fully (do not unplug).
I'm at 35% on 18h and 36m.
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You'll know when you need to wipe battery stats because you'll see some wild sht. For example: if your battery is at 55% and you need to flash something. You go into recovery, flash it, reboot and your battery is now at 87%, you need to wipe. Its best to wipe when you flash a new rom or kernel; just to keep everything fresh.
ms79723 said:
You'll know when you need to wipe battery stats because you'll see some wild sht. For example: if your battery is at 55% and you need to flash something. You go into recovery, flash it, reboot and your battery is now at 87%, you need to wipe. Its best to wipe when you flash a new rom or kernel; just to keep everything fresh.
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Follow this tip here, you may not need to do it every time.....but i recommend doing it maybe once every three times you flash a rom out. And if you restore, i would just wipe batt. stats at the same time of wipe data/factory reset.
Should have clean battery label. But like another post said, to extended battery life....you may want to follow his tip too.
The only issue I have is, when you reset battery stats you have to boot into recovery, right? When booting into recovery it uses some battery, so it won't be fully charged anymore. Am I incorrect in this thinking?
Its less battery power then you think, its not like a whole boot cycle off then off a few minutes later, so it will be fine.
Sent from my PC36100 using XDA App

How to calibrate battery on g2?

So guys how do you guys calibrate your batteries? I have pershoot kernel and I saw some people that their battery life is going up to 26 hours. I wipe my battery stats and my battery still drains 10% less than an hour. So anyone can give me some ideas how to do it? O and I use profiles in setcpu too,such as screen off battery and charging/full.
Sent from my HTC Vision using XDA App
Run battery until phone shuts off. Turn phone on and play with it till battery dies and phone shuts off. Turn phone on again. Till battery dies. Repeat. Repeatu until it doesn't boot again. Plug phone into outlet (not laptop)
Don't bother the phone till the light is green.
let it charge for a few more hours after ut turns green. the g2 gives a green light not onl at 100 but between 90-100. let it charge until green then unplug and plug it back in to charge for another hour or so
After you do all that the batery will apear to drain faster but will stay red longer untill new battery data is built up to give acurate estimates.
Sent from my HTC Vision using XDA App
How does one have the phone "off-off" when you have Clockwork Recovery installed? It turns on into CWR whenever the phone is "off" as soon as you plug it in.
Thanks!
verkion
I never turn my phone off.... just charge it every night. Its my alarm anyway
Sent from my HTC Vision using XDA App
verkion said:
How does one have the phone "off-off" when you have Clockwork Recovery installed? It turns on into CWR whenever the phone is "off" as soon as you plug it in.
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Sorry, but right now you can't. It's a problem with Clockwork. If it really bothers you, you can always flash the stock recovery back again.
i did complete battery drains till phone cant power on than i charge a little delete battery stats in recovery drain again and than charge overnight. im at 11 1/2 hours with 74% left.
http://wiki.cyanogenmod.com/index.php?title=Troubleshooting#Battery_recalibration
Sent from my HTC Vision using XDA App
Well I charged my phone to 100% went into recovery wiped batt stats/ rebooted/ drained battery, did a full charge. Now I get about 24-26hrs.
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massiveatak808 said:
Well I charged my phone to 100% went into recovery wiped batt stats/ rebooted/ drained battery, did a full charge. Now I get about 24-26hrs.
Sent from my HTC Vision using XDA App
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Are you using the stock batt or the CHichi's?
So I'm in the process of doing this....Right now I'm sitting on 27% after 6 hours. SO I guess it's normal that it drains much quicker after you reset the stats?
How do you "go into recovery and wipe battery stats"?
Are you rooted w/ clockworkmod recovery?.....rom manager?
Sent from my HTC Vision
.. No. Just have a temp root installed.
Well, I did just what you all did and now I get 42 days >=3 ha beat that!!!!
1300
I find it hard to believe any of you are actually getting more 10 hours
unless of course the only thing you do is leave in standby and only text and barely any web or anything
1300 mAh is not alot

Should I calibrate my battery?

Lately my phone will go through a massive drain until it hits around 55% then it will drain normally. I have not changed anything since this started. Any suggestions? I'm thinking I may need to calibrate my battery.
Sent from my HTC Droid Incredible 2 via the XDA app.
That sounds like a good idea for your situation.
Sent from my Incredible 2 using xda premium
Thanks for your input. I want to wait a few days before I do it. So it will give it time to see if that really is the problem. This only happened yesterday and today so maybe tomorrow will be better. Besides the only time I really have to do it is later this week.
Sent from my HTC Droid Incredible 2 via the XDA app.
How does one calibrate a battery? Is this the same thing as "conditioning?"
Apsalus said:
How does one calibrate a battery? Is this the same thing as "conditioning?"
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You charge your battery to 100%, wipe batterystats.bin, then run the battery down to 0%, then charge uninterrupted back up to 100%
Battery Calibration does it help ?
I have a similar situation and i followed the battery re-calibration method too but still didnt help.
Situation - The battery would charge till 88% but will show its fully charged. Recently put Vivokat so now its even more prominent. Every reboot drops the battery by steps, like i would reboot and the battery would go from 80 to 65 just like that, no gradual decline or anything. And even after a full charge (the green light indicator is on) still the battery would continue charging.
Tried - I tried resetting the batterystats.bin file as suggested, fully charged till 100% then removed batterystats.bin file then allowed to discharge all the way then charged continuously till 100%. No outcome
Anything else that can be done ?

[Q] I have a problem with battery

Hy guys... i have this phone and i've a problem with battery
the percentage of battery does not discarge in uniform way.
ex i have 100% of charge and after 2 minutes the charge goes to 94 for a long time, then direcly goes to 80% and so on...
i have the same problem with galaxy ace
anyone have a solution?
thanks and excuse for my bad english
If you have CWM Recovery in your device, go to it and select "Wipe Battery Stats" while having a full battery to see if it helps!
TechnoZombie said:
If you have CWM Recovery in your device, go to it and select "Wipe Battery Stats" while having a full battery to see if it helps!
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i've alredy done...
do you have same problem? or your discarge is uniform?
anyone have the same problem?!?!
I had this.
The thing is its losing track of your battery % when in recovery and flashinh another rom, so it will drop 20% in 2 minutes and be stuck for 2 hours on the same percentage.
It lasts as long as nprmal, but it indicates wrong.
Fixed it by charging while the phone is off as much as possible, then wipe battery stats, and let it go to 0% till it cant turn on. Then charge to 100%, while phone off, and you are done.
Sent from my GT-S5660 using xda premium
play.google.com/store/apps/details?id=com.nema.batterycalibration&hl=it
voetbalremco said:
I had this.
The thing is its losing track of your battery % when in recovery and flashinh another rom, so it will drop 20% in 2 minutes and be stuck for 2 hours on the same percentage.
It lasts as long as nprmal, but it indicates wrong.
Fixed it by charging while the phone is off as much as possible, then wipe battery stats, and let it go to 0% till it cant turn on. Then charge to 100%, while phone off, and you are done.
Sent from my GT-S5660 using xda premium
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thanks, i will try already this option...

[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

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