Hi,
Ever since I have cleared my battery stat using recovery to recalibrate my battery I notice now every time I reboot my phone all battery stats are automatically cleared and everything is set to 0 (Time since boot, total up time, time since unplugged).
Does anyone know why this might be happening or how to fix it?
Thanks in advance.
I believe those are supposed to reset after a reboot. I'm pretty sure mine does the same thing.
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They do... and they are supposed to do that... at least mine do
So if battery stats are wiped on reboot, what's the point of having the wipe battery stats in the recovery console?
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You're confusing two different things and worrying about nothing. The stats you are talking about are not the battery stats you are thinkng about.
Unless your system is jacked up, there is no reason battery stats get wiped every reboot and they shouldn't.
The stats you are thinking of are just the stats that relate to the time the phone is on.
lovethyEVO said:
You're confusing two different things and worrying about nothing. The stats you are talking about are not the battery stats you are thinkng about.
Unless your system is jacked up, there is no reason battery stats get wiped every reboot and they shouldn't.
The stats you are thinking of are just the stats that relate to the time the phone is on.
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to clarify that a little bit- the battery stats you see in android are just the battery stats since boot- what's using up the battery, etc. this should be resetting every time you boot.
now, wiping battery stats in recovery wipes the evo's memory of how it computes how much battery life you have left- for example, when you wipe the stats, for the 1st day, you may see the %left display drop from 65 to 55 in a matter of 30 minutes- that's because the evo is re-figuring out what x amount of power in your battery equates to. after a few days, the drop in %left will be much smoother.
Sorry if this is a completely dumb question but what is the benefit of wiping battery stats? Should this be done when switching Roms/Kernels? I have switched multiple of both and am now just learning about battery wipe too so could this be a reason why my battery life has suffered since I switched ROM?
Do you wipe anytime or when battery is full or drained?
Please explain. Again, sorry for the dumb questions.
Addicted2Droid said:
Sorry if this is a completely dumb question but what is the benefit of wiping battery stats? Should this be done when switching Roms/Kernels? I have switched multiple of both and am now just learning about battery wipe too so could this be a reason why my battery life has suffered since I switched ROM?
Do you wipe anytime or when battery is full or drained?
Please explain. Again, sorry for the dumb questions.
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Click to collapse
For maximum battery life, and definitely after switching roms, you need to do a bump charge, then wipe your battery stats.
With your phone on, charge until the battery says 100%.
Turn your phone off, leaving it plugged in.
Your led should change from green to red.
Leave your phone off and plugged in until the led turns green.
Unplug it.
Hold volume down and power buttons until you boot into recovery.
Clear battery stats.
Reboot normally.
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Cool thanks I will do that tonight
Happy thanks giving
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After I rooted my 2.3.3 evo I have this issue of very very slow charging after I flash anything so slow in fact that ill get 30% overnight then after I get a full charge its fine.
Also I was wondering which kernel has the loudest audio gain
Thanks for the help and all the great work by all the devs
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look at the charger you use. if you're only using 100 mA to charge your phone. what do you expect? Try different chargers with different brands.
the stock charger should work just fine for charging fast, working on the assumption that that is what your using, did you wipe your battery stats in recovery after u flashed your new rom? If not charge your battery to 100%, access recovery, go to wipe, wipe battery stats, do it twice just in case. Then drain your phone till it shuts off and recharge. See if that works
If you've flashed a different rom/kernel, that may be your culprit. I've found that some kernels charge more slowly than others... specifically SBC builds. However, eight hours and only increasing 30% sounds like more than just a kernel. Definitely charge fully then wipe battery stats, something may be wonky.
If you wiped battery stats during your routine wipe, and your battery wasn't fully charged then that will cause issues as well.
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Ya I've got the stock charger from sprint and I've wiped the batt stats. I recently even went thru my sdcard to remove unused back ups I've tried differ rom/kernel combo and all have this issue.
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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?
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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?
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Click to collapse
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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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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Click to collapse
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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Click to collapse
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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Click to collapse
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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Click to collapse
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
Click to expand...
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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