i heard that it was important to wipe my battery stats after i flash a new rom, and then fully drain to calibrate it , but this post says otherwise...
i also read that its better to flash roms on a full battery.
is any of this true?
, thanks
it's better if you full wipe battery stats... i did it with my xperia x8... and it still awake untill 2 days...
it is better to flash with a full battery so you don't power down due to low battery while flashing. The level of battery shouldn't matter - as long as the device completes the flash.
Hi, So I wipe the battery stats and I have always had good experience.
Load after uploading the new ROM, then Battery Calibration.!
Is important but not to much times.
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It was debunked by a Google employee iirc. It doesn't do much more than erase the stats you see on the settings page.
Stadsport said:
It was debunked by a Google employee iirc. It doesn't do much more than erase the stats you see on the settings page.
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That is true here is a link http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
Related
I have a question about battery calibration.
After I deleted batterystats.bin, the meter seems to be working fine (prior to deletion, battery meter was not correct - for example, only 50% battery was remaining, but battery meter would be around 70%.
Anyway, do I have to calibrate battery each time I flash new/upgrade ROM?
I've been changing to different ROMs frequently nowadays to find best battery ROM. So I was wondering if I have to calibrate battery each time I flash new ROM.
Thank you!
Honestly I dont think it matters much. I've heard arguments both ways but what I do is I calibrate when I first get me phone (or a new battery) and thats it. I get great battery like even going between roms
johnkim0011 said:
I have a question about battery calibration.
After I deleted batterystats.bin, the meter seems to be working fine (prior to deletion, battery meter was not correct - for example, only 50% battery was remaining, but battery meter would be around 70%.
Anyway, do I have to calibrate battery each time I flash new/upgrade ROM?
I've been changing to different ROMs frequently nowadays to find best battery ROM. So I was wondering if I have to calibrate battery each time I flash new ROM.
Thank you!
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You MUST delete the battery stats.bin everytime you flash a new rom
window7 said:
You MUST delete the battery stats.bin everytime you flash a new rom
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I don't agree with the word must. It would be a good thing after a few flashes but EVERY time is not needed.
Sent from my Nexus S 4G using XDA App
window7 said:
You MUST delete the battery stats.bin everytime you flash a new rom
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Um.. no. theres a proper way to caliberate the battery.
If that was the case then I'd be wiping my battery stats everyday because of CM7 nightlies
But yeah, I'd probably say just do it if you feel that your battery life is awful. Maybe once every 3-5 months? I've had the NS since it first came out and I haven't wiped my battery stats. Battery life is still amazing, so I don't know.
Does wiping battery stats too often due to flashing alot of roms reduce stock battery performance ?? Being curious..
Sent from my HTC Sensation Z710e using xda premium
No. The battery stats file is only used for determining battery drain. It does not have an effect on battery life one way or the other.
dallashigh said:
No. The battery stats file is only used for determining battery drain. It does not have an effect on battery life one way or the other.
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Thanks and while were at it dont wanna open a new thread is there any script for disabling the charging led ?? It gets very annoying at night in the bedroom :/
I remember i had such a script on my old x10 ... Thanks in advance
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wiping battery stats does nothing to your battery and actually the battery stats are wiped automatically every time u fully charge ur phone:
Dianne Hackborn said:
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away.
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source: Dianne Hackborn - Android Framework Engineer on Google+
PuscH said:
wiping battery stats does nothing to your battery and actually the battery stats are wiped automatically every time u fully charge ur phone:
source: Dianne Hackborn - Android Framework Engineer on Google+
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If the battery stats get wiped every time it hit 100 how one can keep the same battery life daily ?
Sent from my HTC Sensation Z710e using xda premium
The only way to really preserve a battery is to fully discharge, fully charge. Mine was going great until I slacked on it. I started only charging a little, fully charging from 40%, etc etc. Now, I'm on 100% for two hours. Then I drop fast to about 80%. Then I float around 80 to 60% for a few hours but once I go below 60%, boom, 20%. The last 20% go quick too.
Don't get me wrong, my battery life is basically the same, but now it's really inaccurate. If you start to feel this, the best thing you can do is fully charge, fully discharge. Do that a lot, over and over. It might help correct it, might not.
But to reiterate, no, wiping battery stats does nothing.
sshede said:
The only way to really preserve a battery is to fully discharge, fully charge. Mine was going great until I slacked on it. I started only charging a little, fully charging from 40%, etc etc. Now, I'm on 100% for two hours. Then I drop fast to about 80%. Then I float around 80 to 60% for a few hours but once I go below 60%, boom, 20%. The last 20% go quick too.
Don't get me wrong, my battery life is basically the same, but now it's really inaccurate. If you start to feel this, the best thing you can do is fully charge, fully discharge. Do that a lot, over and over. It might help correct it, might not.
But to reiterate, no, wiping battery stats does nothing.
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Okay thanks alot but can a custom rom really make that much difference on battery life's performance ?? On my old x10 no matter how many scripts tweaks for batttery they would add i would always get same battery life is it the same here ?
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Hello,
I am trying to install some custom ROMS onto my phone and I just found one that I want to use. But I did read something that you should recalibrate your battery after installing custom ROMS. Is this true?
And my 2nd question is how to do this. Because I found an app: "Battery Calibration", but I don't know if this will do the trick. I know you can calibrate the battery with Clockwork too, but is this the same as the app?
Thanks in advance
Mathi
The purpose of recalibrating the battery is too get an accurate estimate of battery life. When you switch roms the processor usage changes. Your cell phone doesn't recognize this though and continues to estimate according to the old ROM usage.
I don't know about the apps, i've always done it the manual way.
Sent from my DROID BIONIC using Tapatalk
battery Cal.
this app works if you follow the 3 steps, charge to 100% then calibrate it unplug your phone then let it discharge fully then when you recharge it don't unplug it until it hit 100% for the second time then you should notice a slight improvement in your phones battery life i am sure the app and cwm method are similar, but with this app you should have no problem its really easy to use, hope this helped, happy tweakin
Hans5849 said:
The purpose of recalibrating the battery is too get an accurate estimate of battery life. When you switch roms the processor usage changes. Your cell phone doesn't recognize this though and continues to estimate according to the old ROM usage.
I don't know about the apps, i've always done it the manual way.
Sent from my DROID BIONIC using Tapatalk
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How do you do it manually? Let it complete drain out and fully charge ?
From the recovery menu.
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All sources have said that Battery Calibration is reliable.
Also keep in mind that with Li batteries, every time the battery dies, its life is shortened by a small amount; therefore, every time you drain it completely, you're actually losing a little bit of battery life.
Other than that, I would be that Google can pull up quite a few results.
According to Google dev blog, wiping batterystats.bin is unnecessary and is in fact useless. You can Google for the link....
Sent from my PC36100 using Tapatalk 2 Beta-6
everytime i flash a rom also never do the battery calibration,it is necessary?
weiloon1234 said:
everytime i flash a rom also never do the battery calibration,it is necessary?
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Not necessary at all, when you charge your battery 100% its already calibrated (status refreshed)
I've been using the battery calibration app ever since I started flashing ROMs and have done it every time I flash a new ROM. Can honestly say I notice a difference. Not always immediately as its advised to do a couple of full drain recharges before assessing your battery life
Ever since I flashed this rom my battery life has been terrible. Do I need to recalibrate my battery or is just the normal battery life? I have a galaxy s 2.
Sent from my SPH-D710 using xda app-developers app
Uuuumm a little help?
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Try cement : advanced : wipe battery stats
I'm having the same problem. I had illusion xT 1.8, it was somewhat slow so I decided to try ICS. I did a full wipe (wipe data, wipe cache, wipe dalvik, wipe battery stats) and loaded PureICS. As soon as I loaded the new rom my battery started draining at an alarming speed, if I didn't start charging I would lose 1% almost every minute idle (just connected to WiFi). I went to Batter under the Settings menu and I had Internet at 33% (the browser wasn't running), Google Services at 21% and Screen at 18%. Before, with illusion xT, the Screen was the biggest drainer.
I searched the ROM thread and some advised on using the Siyah kernel. Should I do that? What's the procedure? I saw that I can use Odin or CWM, which one should I use?
Should I try something else?
Thanks!
I love to flash different roms from the devs here on this sensation forum, but when I do try anything thats AOSP Or that AOKP even miui it seems like my battery drains faster then it does on the htc stock roms. I would love to try to Jelly Bean roms that im sure are gonna start popping up very soon but afraid they will give me the same results in battery. anything i could do to fix it?
After every new rom flash you should drain your battery to under 10% then give it a full charge and wipe the battery stats from recovery. This is to calibrate your battery. By doing this the new rom gets to know your battery more or less, and will give you a much more accurate usage and drain.
Sent from my HTC Sensation 4G using xda app-developers app
Sloopjoshb said:
After every new rom flash you should drain your battery to under 10% then give it a full charge and wipe the battery stats from recovery. This is to calibrate your battery. By doing this the new rom gets to know your battery more or less, and will give you a much more accurate usage and drain.
Sent from my HTC Sensation 4G using xda app-developers app
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Please stopping spreading this FUD. Don't wipe battery stats unless you have noticed a decrease in battery life that would give you reason to believe that your battery needs recalibration. Wiping stats too much does not extend battery life. If anything, it hurts it.
Sent from my HTC Sensation XE with Beats Audio Z715e using xda premium
I was merely passing along what helped my battery drain issues when dealing with a new rom and faster than normal battery drain. I have seen countless times this recommended in the forums here.
Sent from my HTC Sensation 4G using xda app-developers app
moto211 said:
Please stopping spreading this FUD. Don't wipe battery stats unless you have noticed a decrease in battery life that would give you reason to believe that your battery needs recalibration. Wiping stats too much does not extend battery life. If anything, it hurts it.
Sent from my HTC Sensation XE with Beats Audio Z715e using xda premium
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I beg to differ; I've experienced it.
Here's something to read:
http://www.guidingtech.com/12739/android-battery-calibration-what-how/
The reason you wouldn't have experienced this problem is probably because some ROMs contain a "battery auto-calibration script".
My knowledge of this is quite limited, but I think the auto-calibration script is only present in Sense based roms.
battery drain
maybe i think your battery is old.
sensation is eating many battery.so your battery have many battery cycle.
If your battery is one year, you recommend to get a battery
moto211 said:
Please stopping spreading this FUD. Don't wipe battery stats unless you have noticed a decrease in battery life that would give you reason to believe that your battery needs recalibration. Wiping stats too much does not extend battery life. If anything, it hurts it.
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Click to collapse
Please stop spreading this FUD. Batterystats.bin has nothing to do with your battery life in any way, shape or form. It is there solely for reporting purposes.
It doesnt make the battery last longer, that is true. But it absolutely can help the battery percentage to be more accurately reported.
And since the phone will auto shut down at 1% battery, accurately reported stats CAN make the phone stay on longer even if nothing has been changed about how much current flows in and out of the battery.
That said, you cant judge battery life on a new rom for several discharge cycles. When I flashed cm9 the first day the battery lasted 12 hours. The second day it was 24. Now its 40 on average. Give it a week or so before deciding battery life suck.
Sent from a rebel ship by storing the message in an R2 unit. (Help me, XDA. You're my only hope)
No it can't. It has nothing to do with the battery %age.
It's (only) purpose is for the battery use info in settings.
Skipjacks said:
It doesnt make the battery last longer, that is true. But it absolutely can help the battery percentage to be more accurately reported.
And since the phone will auto shut down at 1% battery, accurately reported stats CAN make the phone stay on longer even if nothing has been changed about how much current flows in and out of the battery.
That said, you cant judge battery life on a new rom for several discharge cycles. When I flashed cm9 the first day the battery lasted 12 hours. The second day it was 24. Now its 40 on average. Give it a week or so before deciding battery life suck.
Sent from a rebel ship by storing the message in an R2 unit. (Help me, XDA. You're my only hope)
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Rusty! said:
No it can't. It has nothing to do with the battery %age.
It's (only) purpose is for the battery use info in settings.
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What Rusty said. The file gets deleted after every charge to 100%, or drain to 1%. Then it gets made again. The only thing it does is provide the battery statistics in 'Settings' under 'Battery'. This myth was even listed on the front page.
with my myt4g when i had miui battery life was good without even waiting a few cycles. the sensation any stock or cooked sense roms i only notice a ggood battery life.i guess i'll just try to do what was suggested wait a few cycles before deciding battery life on the rom is no good
Rusty! said:
Please stop spreading this FUD. Batterystats.bin has nothing to do with your battery life in any way, shape or form. It is there solely for reporting purposes.
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http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
I stand partially corrected as I misremembered the content of this article. But I still stand by the fact that recommending a batterystats wipe after every flash to maximize battery life is complete FUD. The best thing you can do if and only if you suspect that your battery has become miscalibrated is to run it completely dead and then completely charge it without unplugging it until its done.
moto211 said:
But I still stand by the fact that recommending a batterystats wipe after every flash to maximize battery life is complete FUD.
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Correct, however that's not what you said, hence my repeat of your comment
Rusty! said:
Correct, however that's not what you said, hence my repeat of your comment
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It's cool. Like I said, I misremembered regarding when batterystats should be manually wiped (never).
On a side note, my battery has lasted much longer now that I've completely stopped wiping batterystats. As has been stated by others, that file has nothing to do with actual battery life, but my perceived battery life is much better. My theory that by wiping batterystats manually, we hinder our phones ability to accurately report battery charge and adjust to maintain accuracy. So, if its inaccurately reporting 100% (fully charged) at 90% and reporting 1% (dead) at 10%, then almost 1/5 of the battery's full cycle is not being used. Therefore, when no longer wiping, the reporting can calibrate itself and "gain" back that 20%.
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