Develop Bugs

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

[Q] Battery % dropped after battery pulled

lately my battery was not at it's best so I decided to do a fresh wipe/install of latest cm7 nightly (38). Now I charged my phone fully to 100% with current widget reporting 0ma and then wiped the battery stats, simple steps I always do with a new rom or fresh install.
Now the weird thing is my battery was at 96% after a phone call and I decided to pull the battery out the phone and plugged it straight back in, when I turned the device back on battery dropped to 84%..???
I wonder why the at has happend? Was the battery not calibrated properly lately therefor causing a bit of an issue for me, it read 96% but 84% was the real value? e.g. was my phone never fully charged lately due to bad battery stats (which I wiped everytime)...
Just wondering if someone can shed light on this situation and or if you had similar experience ?
I'm now charging my battery back to 100% and hope I finally get my good battery life back...

Why did you pull the battery?
If this happened shortly after you wiped the batterystats it's probably because the phone hasn't had enough time (ie charges and rundowns) to gather enough information to make the new batterystats accurate.

normally , phone used up more power to boot. if your have 100% and then you reboot, you will lost 1-2% or at most 5% if you do wipe cache & dalvic cache because the phone need to rebuild the cache.
but if you lost >10+% , it must be that the battery calibration problem. maybe you still have more than 90% after you take out the battery but the display is wrong.

Cm7 battery indicator problem

When I charged the phone it was showing 88% n after sometime I rebooted the phone and then battery indicator shows 99%
Sent from my HTC Wildfire S

Happens with most phones.
Use it for a short time then it will drop to correct percentage.
Then charge fully.

could help to clear your battery stats too.
Sent from my HTC_A510c

BigChillin said:
could help to clear your battery stats too.
Sent from my HTC_A510c
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Nope. This just out: Wiping battery stats is a pointless practice. Per the article sited in the thread,
Quoting Dianne Hackborn, Android Framework Engineer:
Deleting it is not going to do anything to make your more device more fantastic and wonderful...​

So just instead of clearing battery stats, Charge it fully few times, and it will be gone

Same here.My battery lowing 1% per minute after flashing new rom

Galaxy Nexus Battery Usage - Android OS

Hi
Not all the time but every so often my battery drains really quickly. It might be at 80% at night and at 20% the next morning and if I look at the battery usage stats the OS has used the majority of the OS. If I restart the phone it will usually be ok again.
Is there anyway of finding out what part of the OS is causing the issue or how can I stop it? Its not an issue if I am able to charge the device as soon as I relaise but sometimes I have to go out and then have a practically dead phone for the day. This can also happen at other times as well but I usually just check it periodically in case the OS is using the battery a lot.
Thanks
Brian

If you have CWM - charge the phone to 100%, then wipe the battery stats. Oddly enough, it did the trick for me. I've had about 20-25% overnight drain before. Now <5%.
Also check for apps that are waking your phone with BetterBatteryStats (you need to check for partial wakelocks). Maybe some app is not draining, but just wake your phone too often so it can't deep sleep.

if your android rooted,try "One Power Guard" download from onexuan.com,It can help you extend battery life .
Discuss from http://forum.xda-developers.com/showthread.php?t=1889740

tixed said:
If you have CWM - charge the phone to 100%, then wipe the battery stats. Oddly enough, it did the trick for me. I've had about 20-25% overnight drain before. Now <5%.
Also check for apps that are waking your phone with BetterBatteryStats (you need to check for partial wakelocks). Maybe some app is not draining, but just wake your phone too often so it can't deep sleep.
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I can 100% guarantee that wiping battery stats in CWM had absolutely nothing to do with it. It is literally impossible, as batterystats.bin, which is the file being wiped, has zero bearing on the battery fuel gauge. Wiping battery stats has the exact same effect as, say for instance, charging the phone hanging upside down only on even-numbered dates. It also bears mentioning that the file is wiped by Android anyways when the phone is unplugged after charging,making the misguided advice to wipe it even more pointless.
Any "benefit" imagined by those who advocate wiping battery stats is a textbook example of the logical fallacy known as post hoc ergo propter hoc.
Sent from my Galaxy Nexus using Tapatalk 2

/\ post above is 100% correct. Wiping your battery stats will have absolutely no effect. It is not needed AT ALL.
Sent from my SGH-T999 using xda premium

[Q] How many wipes can i do and whats the order to do it

Hi, i wanna know whats the best way to wipe my nitro and whats the order
i usually do it like this:
1. wipe factory reset
2. wipe cache
3 wipe datvilk
and thats it
i saw many option like wipe battery statts and fix permission so when i have to do that?
thanks in advance!

radhames562 said:
Hi, i wanna know whats the best way to wipe my nitro and whats the order
i usually do it like this:
1. wipe factory reset
2. wipe cache
3 wipe datvilk
and thats it
i saw many option like wipe battery statts and fix permission so when i have to do that?
thanks in advance!
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That is the right way to wipe your phone... Battery stats wiping is done when you want to re calibrate the battery (mostly done with battery life isnt that good as experienced by other users)

salimbaba said:
That is the right way to wipe your phone... Battery stats wiping is done when you want to re calibrate the battery (mostly done with battery life isnt that good as experienced by other users)
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From what I understand, calibrating the battery does little to no good; and wiping battery stats should just reset the battery consumption stats. Same thing as a full charge does I believe.

lordcheeto03 said:
From what I understand, calibrating the battery does little to no good; and wiping battery stats should just reset the battery consumption stats. Same thing as a full charge does I believe.
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i believe that is a myth created because people wipe battery stats but don't perform the rest of the steps for calibration.
You are supposed to wipe battery stats when the battery has a full charge.
then you let it completely die.
then you charge it back to 100%
when im doing mine to make the process fast, i just wait till a night where my phone is fully charged, then i go into CWM and wipe the battery stats. then i boot up the phone and open a long movie file (2-3) hours preferably. this will drain your battery fast. I run the movie file and restart it when it ends until the phone dies (dont turn it off at 1% let it die).
this is where the calibration comes in. when your phone is not calibrated right you will notice it sits at 1% for 15-20 minutes even while playing a movie. once the phone dies.
i plug it into the charger and let it charge with the phone OFF, overnight. this will allow it to trickle charge to maximum charge. when you wake up in the morning your phone is fully calibrated. you will notice that it will actually stay at 100% for a few minutes after boot. this means its calibrated properly. (if you have an old battery it might not sit at 100% long, but it should atleast read 100% when the phone is booted. a poorly calibrated battery will read somewhere between 95%-98% after booting up from a full charge.
at least this is my experience with it.
i have done this alot because i used to have to use 3 batteries and calibrate them all. I ended up throwing out one because it was never holding a proper charge and i use my 2nd best battery for backup now and i stick with the one that holds the best charge.
*edit* a side note the one that doesn't hold a charge is because i had the phone in the sun one day and it overheated. overheating is the worst thing for a li-on battery (or most batteries at that).
side note: if battery calibration was a myth then every phone manufacturer wouldn't have warnings about how to perform 1st charge. remember they always tell you, let the phone fully die, then fully charge it while off. They tell you that becuase it is part of properly setting the battery stats.
I am not an expert on all this but i have read a bunch of threads by experts, and the proof is in the pudding... my battery life has steadily increased since i started following that advice.
---------- Post added at 08:38 PM ---------- Previous post was at 08:30 PM ----------
i believe people say calibration doesn't work becuase they wipe their battery stats then they dont let it die properly. This is actually counter productive and tricking your phone into thinking your battery is dead before it is. then people actually get worse batterly life and conclude that wiping stats doesn't do anything. also if you didn't fully charge it would trick your phone into stopping a charge early (because overcharge causes battery damage).
improperly done you would end up with a battery that does not fully charge and tells you its dead before it actually is.
^ not an ideal situation.

KronicSkillz said:
i believe that is a myth created because people wipe battery stats but don't perform the rest of the steps for calibration.
You are supposed to wipe battery stats when the battery has a full charge.
then you let it completely die.
then you charge it back to 100%
when im doing mine to make the process fast, i just wait till a night where my phone is fully charged, then i go into CWM and wipe the battery stats. then i boot up the phone and open a long movie file (2-3) hours preferably. this will drain your battery fast. I run the movie file and restart it when it ends until the phone dies (dont turn it off at 1% let it die).
this is where the calibration comes in. when your phone is not calibrated right you will notice it sits at 1% for 15-20 minutes even while playing a movie. once the phone dies.
i plug it into the charger and let it charge with the phone OFF, overnight. this will allow it to trickle charge to maximum charge. when you wake up in the morning your phone is fully calibrated. you will notice that it will actually stay at 100% for a few minutes after boot. this means its calibrated properly. (if you have an old battery it might not sit at 100% long, but it should atleast read 100% when the phone is booted. a poorly calibrated battery will read somewhere between 95%-98% after booting up from a full charge.
at least this is my experience with it.
i have done this alot because i used to have to use 3 batteries and calibrate them all. I ended up throwing out one because it was never holding a proper charge and i use my 2nd best battery for backup now and i stick with the one that holds the best charge.
*edit* a side note the one that doesn't hold a charge is because i had the phone in the sun one day and it overheated. overheating is the worst thing for a li-on battery (or most batteries at that).
side note: if battery calibration was a myth then every phone manufacturer wouldn't have warnings about how to perform 1st charge. remember they always tell you, let the phone fully die, then fully charge it while off. They tell you that becuase it is part of properly setting the battery stats.
I am not an expert on all this but i have read a bunch of threads by experts, and the proof is in the pudding... my battery life has steadily increased since i started following that advice.
---------- Post added at 08:38 PM ---------- Previous post was at 08:30 PM ----------
i believe people say calibration doesn't work becuase they wipe their battery stats then they dont let it die properly. This is actually counter productive and tricking your phone into thinking your battery is dead before it is. then people actually get worse batterly life and conclude that wiping stats doesn't do anything. also if you didn't fully charge it would trick your phone into stopping a charge early (because overcharge causes battery damage).
improperly done you would end up with a battery that does not fully charge and tells you its dead before it actually is.
^ not an ideal situation.
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I was just putting that out there. I personally have attempted calibrating my battery like you say to do; calibrate on full charge, drain all the way, then fully charge while powered off... I haven't noticed any benefits whatsoever. I've always been able to charge to 100% and I assume that with my chronic ROM flashing and bad charging habits that if it were required, I would have noticed some kind of negative issues by now. CM9/ICS is still better on battery than CM10 or any of its variants could ever dream to be. I got my Nitro in December of '11 and I've been abusing my battery with reckless abandon ever since...

lordcheeto03 said:
I was just putting that out there. I personally have attempted calibrating my battery like you say to do; calibrate on full charge, drain all the way, then fully charge while powered off... I haven't noticed any benefits whatsoever. I've always been able to charge to 100% and I assume that with my chronic ROM flashing and bad charging habits that if it were required, I would have noticed some kind of negative issues by now. CM9/ICS is still better on battery than CM10 or any of its variants could ever dream to be. I got my Nitro in December of '11 and I've been abusing my battery with reckless abandon ever since...
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...... these batteries are actually supposed to work better over time for a few years and i know cm10 is bad on battery whats your point...

KronicSkillz said:
...... these batteries are actually supposed to work better over time for a few years and i know cm10 is bad on battery whats your point...
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Lay off the Kronic, man and follow the story. But seriously; you were saying that the thought that battery calibration doesn't do anything is only because most people don't follow the proper procedure. I was just pointing out that I abuse my battery to no ends and have only ever calibrated it once or twice using that procedure and have yet to see any ill effects from my rampant disregard for the battery without semi-regular calibrations; and that I never noticed any effect whatsoever from the calibrations. Just carrying on a discussion; or are forums not meant for that?

I would add wipe /system to that list, since we re talking about FULL wipe.
Oh and yea ... wipe battery stats is the least of your concern, i keep reading it doesnt do anything ... also tried doing it manually by removing the battery (its a whole procedure in a post i read) and i didnt see any difference, well obviously it will never affect the way your ROM reacts or works, even for the battery %.

just1nsama said:
I would add wipe /system to that list, since we re talking about FULL wipe.
Oh and yea ... wipe battery stats is the least of your concern, i keep reading it doesnt do anything ... also tried doing it manually by removing the battery (its a whole procedure in a post i read) and i didnt see any difference, well obviously it will never affect the way your ROM reacts or works, even for the battery %.
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How i sipe te system?

radhames562 said:
How i sipe te system?
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Depending on what recovery you use:
CWM: Mount and storage > format system (or wipe system, same thing)
TWRP: WIPE > System
*****
So in order, FULL WIPE: Factory reset (wipe data), wipe cache, wipe dalvik cache, wipe system

just1nsama said:
Depending on what recovery you use:
CWM: Mount and storage > format system (or wipe system, same thing)
TWRP: WIPE > System
*****
So in order, FULL WIPE: Factory reset (wipe data), wipe cache, wipe dalvik cache, wipe system
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Click to collapse
Thank you! I gonna start doing it like this nos on

Even google engineer said that wipe battery stats did nothing at all, however, I do have some luck with battery calibration on other devices, and the difference is noticeable.
P930 seems to be fairly accurate on battery indicator and I haven't done a calibration yet.

the real question is are google engineer's experts on ni-mh batteries or software developement, that is the question the guide i read about it was written by a battery expert, while its possible they were just blowing smoke i have a hard time believing it does nothing. What would be more believable is that most batteries don't need calibration if they were properly calibrated on first use. All i know is i had 3 batteries going in and out of my phone for a few months and when i started doing calibration i got 4+ hours of extra battery life. It may have just been because i was swapping batteries that the calibration was messed, my only point was that if a battery does need calibration that is the method i've found that works. if it doesn't need calibration then calibration will do nothing, that is most likely why everyone says it does nothing because MOST batteries don't need calibration as that google engineer probably knows these phones and batteries do a decent job of staying calibrated. but you also can't say calibration is a myth because the facts are every battery manufacturer has a huge warning on how to properly first charge a batter (same thing as calibrate) upon first use of the phone. I would imagine they have these warnings so that people don't need to worry about calibration later. I don't know im not a battery expert, but i do know logic when i see it.

This is the G+ post by the Google engineer
https://plus.google.com/app/basic/stream/z13dgb0rksywh3muq222fzkqnwfgdbgrk04
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