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
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.
I rooted my Sensation 4G for the first time yesterday, and was pretty happy with how smoothly everything went. However, I noticed during normal use today that the battery was being drained faster than usual. It dropped by about %20 within a two hour period - much faster use than during pre-root. I checked things that might have been draining it. But I found nothing new that could've been considered a possible culprit. I'm running the stock rom with Go Launcher EX. Has anyone else experienced this phenomenon after rooting?
Not without flashing a custom rom, and even that's a rarity. Rooting in general does not cause much extra to be run, so battery is virtually unaffected. Try fully discharging the battery and charging it back up to 100% without interruptions during the recharge. That usually clears up battery issues.
A better idea is to completely charge the battery until it is 100% and the led light turns green. Then while the phone is still plugged in go to your recovery menu and wipe the battery stats. This is not a recommended process, its a REQUIRED process every time you switch roms. That should fix the battery issues that you are having.
Thanks, I'll give that a try when this drains out. I also noticed that more RAM is being used now after rooting, which looks to be the result of too many apps opening in the background. It's strange that this didn't happen before either. I'm hoping something didn't go wrong in the rooting process that caused this.
Sketchy McSketch said:
Thanks, I'll give that a try when this drains out. I also noticed that more RAM is being used now after rooting, which looks to be the result of too many apps opening in the background. It's strange that this didn't happen before either. I'm hoping something didn't go wrong in the rooting process that caused this.
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Are you using many apps that require root permission? And the battery stats is only reccomended, some people say its a myth and don't bother, but do it once for every new rom. And give it a few full discharge and recharge cycles before deciding the battery drain is high.
Sent from my Sensation using xda premium
I'm only running BatteryCalibration and Titanium Backup that need root permissions. I'm just seeing more regular apps running now than before. And I've been checking app activity through the Go TaskManager Widget if that means anything. I'll take the advice and calibrate the battery after it's at %100 and give it some time, although I didn't change ROMs yet. Would flashing a ROM and then calibrating have any possible effect on this?
sometimes it's only visual bug try to wait and it will be fixed
Sent from my GT-I9100 using xda premium
Sketchy McSketch said:
I'm only running BatteryCalibration and Titanium Backup that need root permissions. I'm just seeing more regular apps running now than before. And I've been checking app activity through the Go TaskManager Widget if that means anything. I'll take the advice and calibrate the battery after it's at %100 and give it some time, although I didn't change ROMs yet. Would flashing a ROM and then calibrating have any possible effect on this?
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Task managers tend to cause more harm than good, they're okay to monitor but killing apps all the time drains battery. As far as ram usage goes, a good custom rom will work wonders, and depending on which one you pick, the battery should improve too, but as far as calibrating goes its the same on any rom. Most recomend wipes.
When charging to 100% I highly reccomend using an app called current widget, because the battery is out of calibration it won't show an accurate full battery if it won't show an accurate draining one. So use current widget and charge overnight, or as long as you can, leave the phone locked as much as possible and check the mA value every now and then, and even if the phone says 100% wait til the mA reads close to 0, mine usually doesn't show less than 15mA after an overnight charge. Then wipe stats.
Sorry for the essay but I've read a lot about this and current widget seems to be the best tool I've found.
Sent from my HTC Pyramid using xda premium
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
Sent from my HTC Sensation Z710e using xda premium
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 ?
Sent from my HTC Sensation Z710e using xda premium
This will likely fix any battery reporting problems that occur and should be done after installing a rom, or whenever you think it is needed. It will not actually make your battery life better. It may seem like it as before resetting it may have said 1% remaining when it was really only half dead
NOTE: you must be rooted, which if you are on this forum you almost definitely are
1. fully charge battery and leave plugged in. click calibrate in this app or manually delete the file yourself: https://play.google.com/store/apps/...yLDEsImNvbS5uZW1hLmJhdHRlcnljYWxpYnJhdGlvbiJd
2. Unplug and let the phone die with normal use
3. charge it fully without a break.
4. done. thank me if it helps
This resets the battery stats. It was noted awhile back from someone at Google that this doesn't help with the battery. I used to use this app all the time after a flash and then a couple of months back i stopped using it and really haven't noticed a difference. I'm not trying to ruin your moment of helpfulness but I really don't think it helps with the battery.
Sent from my SAMSUNG-SGH-I997 using xda premium
tmease1 said:
This resets the battery stats. It was noted awhile back from someone at Google that this doesn't help with the battery. I used to use this app all the time after a flash and then a couple of months back i stopped using it and really haven't noticed a difference. I'm not trying to ruin your moment of helpfulness but I really don't think it helps with the battery.
Sent from my SAMSUNG-SGH-I997 using xda premium
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No problem. You are right. This will not help if your battery is actually draining. It only changes what android thinks your battery level is at. this can get screwed up after a flash, depending on many factors of the rom. It also is different with every device. What it helps with is when your stats are off. for example temple run takes 60% of your battery when you play for 5 minutes and you know it isn't running, or it drains fast to 1% then lasts another 6 hours. So if you are noticing poor battery life, make sure it is really bad, not just reported wrong. I will edit the OP to say this more clear.
2. Unplug and let the phone die with normal use
3. charge it fully without a break.
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This is what really fixes the issue. Clearing battery stats with an app or through cwm is redundant.
I don't recommend discharging all the way though
I thought fully charging the battery reset the stats. No?
Sent from my MB865 using XDA
KEB64 said:
I thought fully charging the battery reset the stats. No?
Sent from my MB865 using XDA
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I think partially, but I know for a fact this process works great and isn't that hard. It resets things better from my understanding because it totally wipes stats instead of just re-calibrating some things
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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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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