Database Users

Refreshing battery stats after Odin or flashing (important)

After flashing Odin several times (through trial and error) i noticed that my battery depletes or empties allot faster than before.
after doing some research it became apparent that the phone is not displaying the correct battery level. To solve this i had to wipe the battery stats after fully discharging and fully charging it to show the correct battery levels.
You can use any battery intensive applications to discharge the battery, after which you should fully charge it till you get a message telling you that the battery is full.
then run the following commands
su
rm /data/system/batterystats.bin
that should fix the incorrect battery meter although i wish we had a good custom recovery like HTC Other devices....
Enjoy

Hi i have also noticed yesterday that when my phone was charged to 100% i did not get the remove charger message. Could you please provide a step by step method to how you should go about correctly recalibrating the battery. This would be much appreciated. Thanks
n646464 said:
After flashing Odin several times (through trial and error) i noticed that my battery depletes or empties allot faster than before.
after doing some research it became apparent that the phone is not displaying the correct battery level. To solve this i had to wipe the battery stats after fully discharging and fully charging it to show the correct battery levels.
You can use any battery intensive applications to discharge the battery, after which you should fully charge it till you get a message telling you that the battery is full.
then run the following commands
su
rm /data/system/batterystats.bin
that should fix the incorrect battery meter although i wish we had a good custom recovery like HTC Other devices....
Enjoy
Click to expand...
Click to collapse
Sent from my GT-I9000 using XDA App

I did this hack today. Lets see how we get on

Its my 3rd recharge after flashing and i get opposite problem now. 27h since charging, with 3h display on and battery level is 100%

LOL
LOL the result was even easier than i thought.
I drained the battery down to 5%, plugged in the phone and can the command as in the first post. Turned the phone off than on again and when turned on instead of showing 4% (to be exact) it showed 23%. So i just gained 19% of my battery back. Woo

Is it necessary to totaly discharge the device till it turns off ?! So i did, then charged it to 100 % , turned the device on and immediately typed the command's into the shell, but nothing seemed to happen . Did i do anything wrong ?!

bratfink said:
Hi i have also noticed yesterday that when my phone was charged to 100% i did not get the remove charger message. Could you please provide a step by step method to how you should go about correctly recalibrating the battery. This would be much appreciated. Thanks
Click to expand...
Click to collapse
Ok so here is the instructions step by step
1) Charge the battery to full till you get the full battery message
2) Use the phone till it is totally empty (stops turning on)
3)Charge again to full till you get the message again
4) Download and install a terminal shell application from the market
5) Enter the following "su" press enter
6) Enter the following "rm /data/system/batterystats.bin" press enter
Best to Preform steps 4-6 while in charger
Enjoy

Thank you very very much

What is a good app to run to drain a battery quickly ?

Kilack said:
What is a good app to run to drain a battery quickly ?
Click to expand...
Click to collapse
There is an app forgot what it is called though. but it did not work i just turned on all the hardware that was faster

Last Question: When charging the device, should it be turned on or off ?!

TommyBeretta said:
Last Question: When charging the device, should it be turned on or off ?!
Click to expand...
Click to collapse
I did mine when it was on i do not believe there could be a difference

ok, thx again, i think it works now

Thanks for starting this topic . Because today I noticed that for hours after I unplugged it, it did not use any power on the battery graph. Aka, it looks like it thinks it's a lot fuller by default.

thanks for the info, but does it need to be rooted to complete these steps?

Waky said:
thanks for the info, but does it need to be rooted to complete these steps?
Click to expand...
Click to collapse
yes, rooted! only rooted u get access to this path.

Very anxious to try this! It really feels like my battery sucks balls!
Thanks for the tip
Edit: I just tried it, with my battery at 47% because I have no patience at all.. Nothing seems to have changed though, battery was still at 47%

n646464 said:
Ok so here is the instructions step by step
1) Charge the battery to full till you get the full battery message
2) Use the phone till it is totally empty (stops turning on)
3)Charge again to full till you get the message again
4) Download and install a terminal shell application from the market
5) Enter the following "su" press enter
6) Enter the following "rm /data/system/batterystats.bin" press enter
Best to Preform steps 4-6 while in charger
Enjoy
Click to expand...
Click to collapse
Do you have to root the phone to install a terminal shell? thanks.

omzart said:
Do you have to root the phone to install a terminal shell? thanks.
Click to expand...
Click to collapse
I don't think that you need to be root to install the terminal application, however, i do think that without root you cannot run the "su" - super user command.
I could be wrong however.
Edit:
Ok, i just rooted my phone, it's actualy much safer than i thought. The "Superuser permission" application actually alerts you so that you decide whether you'll grant super user permissions to application. If i knew that i would have rooted my phone earlier Yay
For this very purpose i installed Terminal emulator and after typing "su" the "Superuser permission" application actually alerts you if you want to grant terminal super user rights.
I was just testing this, i need to empty my battery first and then charge it full, then i'll try to delete the above mentioned file.

Ok and wich terminal shell is the best on the market?

[Q] Nexus 4 phone gets switched off when battery reaches 30%

HI All,
My Nexus 4 just gets powered off when battery is around 30% and now its starting get worse, it gets switched off when its around 40%.I haven't rooted my phone. It is weird first the network goes off and then when i lock my phone and unlock it just doesn't come up and when I put it for charge it shows as it is charging from 0%. This is being happening since 2 weeks. Anybody has faced the same problem?
voltage :-4.3V
avg voltage :- 4.0V
temp :- 34.7 C
avg temp:- 33.1 C
Anyone has a solution pelase

praveenpk said:
HI All,
My Nexus 4 just gets powered off when battery is around 30% and now its starting get worse, it gets switched off when its around 40%.I haven't rooted my phone. It is weird first the network goes off and then when i lock my phone and unlock it just doesn't come up and when I put it for charge it shows as it is charging from 0%. This is being happening since 2 weeks. Anybody has faced the same problem?
voltage :-4.3V
avg voltage :- 4.0V
temp :- 34.7 C
avg temp:- 33.1 C
Anyone has a solution pelase
Click to expand...
Click to collapse
I'm having similar problems, please check my thread too!

praveenpk said:
HI All,
My Nexus 4 just gets powered off when battery is around 30% and now its starting get worse, it gets switched off when its around 40%.I haven't rooted my phone. It is weird first the network goes off and then when i lock my phone and unlock it just doesn't come up and when I put it for charge it shows as it is charging from 0%. This is being happening since 2 weeks. Anybody has faced the same problem?
voltage :-4.3V
avg voltage :- 4.0V
temp :- 34.7 C
avg temp:- 33.1 C
Anyone has a solution pelase
Click to expand...
Click to collapse
japmeet said:
I'm having similar problems, please check my thread too!
Click to expand...
Click to collapse
Hi guys! You have two answers:
- It is not a real problem but a bad representation of your battery level. Batterystats.bin is a file under /data/system. In this file the phone saves information about your battery level and capacity. Using the saved values, system can create the battery icon, making a level or another. This file is auto-generated, so if u delete it, you are cleaning the battery information in your device. If the saved information isn't real maybe you seem to have 30% battery but the real battery charge is 1%, so my suggestion is:
1. Download an explorer (I would recommend Root Explorer)
3. Charge the phone until the top, let it discharge until the phone cannot reboot
4. Charge it till 100%, unplug it from charger
5. Reboot and connect it back to the charger till 100% again. Unplug it
6. Go to /data/system and delete batterystats.bin
7. Use the phone normally​
If the problem isn't solved in 1-2 days then...
- It is a real problem, may be caused for who main reasons:
The kernel isn't making a good management of the energy. Flash another kernel and set up proper CPU Values to get a good battery life . Configure the cpu frecuencies using an app for so, like trickster mod, cpu master, franco kernel updater, you have a lot... Also undervolt your phone if u think it is necessary too.
Your hardware is broken somewhere, maybe a bad battery, or something overcharged or wrong there. Contact Google SAT and praise for it to be a factory bug lol
I am sorry for this big bible, but hope it is useful for you and the community

luiseteyo said:
Hi guys! You have two answers:
- It is not a real problem but a bad representation of your battery level. Batterystats.bin is a file under /data/system. In this file the phone saves information about your battery level and capacity. Using the saved values, system can create the battery icon, making a level or another. This file is auto-generated, so if u delete it, you are cleaning the battery information in your device. If the saved information isn't real maybe you seem to have 30% battery but the real battery charge is 1%, so my suggestion is:
1. Download an explorer (I would recommend Root Explorer)
3. Charge the phone until the top, let it discharge until the phone cannot reboot
4. Charge it till 100%, unplug it from charger
5. Reboot and connect it back to the charger till 100% again. Unplug it
6. Go to /data/system and delete batterystats.bin
7. Use the phone normally​
If the problem isn't solved in 1-2 days then...
- It is a real problem, may be caused for who main reasons:
The kernel isn't making a good management of the energy. Flash another kernel and set up proper CPU Values to get a good battery life . Configure the cpu frecuencies using an app for so, like trickster mod, cpu master, franco kernel updater, you have a lot... Also undervolt your phone if u think it is necessary too.
Your hardware is broken somewhere, maybe a bad battery, or something overcharged or wrong there. Contact Google SAT and praise for it to be a factory bug lol
I am sorry for this big bible, but hope it is useful for you and the community
Click to expand...
Click to collapse
Thanks, I'll try it out
Edit: I'm using franco r191, Cpu max at 1Ghz, -150mV undervolt. I just had a question. Don't the battery calibration apps like BatteryCalibration do the same thing?

japmeet said:
Thanks, I'll try it out
Edit: I'm using franco r191, Cpu max at 1Ghz, -150mV undervolt. I just had a question. Don't the battery calibration apps like BatteryCalibration do the same thing?
Click to expand...
Click to collapse
Yes, they do, but since everyone has a downloaded root explorer I think is easier this way. You don't have to download any app

luiseteyo said:
Yes, they do, but since everyone has a downloaded root explorer I think is easier this way. You don't have to download any app
Click to expand...
Click to collapse
That app didn't do anything, however I'll try it your way too, and update

japmeet said:
That app didn't do anything, however I'll try it your way too, and update
Click to expand...
Click to collapse
How do u know it didn't do anything?

luiseteyo said:
How do u know it didn't do anything?
Click to expand...
Click to collapse
battery stats didn't reset, plus phone still died at 34%.
I'm charging my phone right now and it goes from 34% to 100% in a few minutes but when I reboot it , the battery %age comes back to 34-35%, what should I do in this case?
Edit: the voltage its showing right now is around 4.3V, so is the 100% correct?

japmeet said:
battery stats didn't reset, plus phone still died at 34%.
I'm charging my phone right now and it goes from 34% to 100% in a few minutes but when I reboot it , the battery %age comes back to 34-35%, what should I do in this case?
Edit: the voltage its showing right now is around 4.3V, so is the 100% correct?
Click to expand...
Click to collapse
Yes, it is correct. If you are rooted you shouldn't have any problem deleting it. Cannot reset, because don't exist. Charge the phone for 8h tonight. When you get up delete it and report.
I won't be very dissapointed if you thank ANY of my answers lol!!

luiseteyo said:
Yes, it is correct. If you are rooted you shouldn't have any problem deleting it. Cannot reset, because don't exist. Charge the phone for 8h tonight. When you get up delete it and report.
I won't be very dissapointed if you thank ANY of my answers lol!!
Click to expand...
Click to collapse
lol, don't worry, trust me I am very thankful for your help, I'm clicking on those little thumbs up now
---------- Post added at 03:36 PM ---------- Previous post was at 03:20 PM ----------
luiseteyo said:
Yes, it is correct. If you are rooted you shouldn't have any problem deleting it. Cannot reset, because don't exist. Charge the phone for 8h tonight. When you get up delete it and report.
I won't be very dissapointed if you thank ANY of my answers lol!!
Click to expand...
Click to collapse
Question, restart after deleting batterystats.bin file?

japmeet said:
lol, don't worry, trust me I am very thankful for your help, I'm clicking on those little thumbs up now
---------- Post added at 03:36 PM ---------- Previous post was at 03:20 PM ----------
Question, restart after deleting batterystats.bin file?
Click to expand...
Click to collapse
It isn't necessary

luiseteyo said:
It isn't necessary
Click to expand...
Click to collapse
Alright, thanks, this time when it hit a 100% I restarted it and it stayed at around 97-98%, let it charge all the way up to 100% and deleted the batterystats file, lets see if this fixes my problem!
Thanks for your support

japmeet said:
Alright, thanks, this time when it hit a 100% I restarted it and it stayed at around 97-98%, let it charge all the way up to 100% and deleted the batterystats file, lets see if this fixes my problem!
Thanks for your support
Click to expand...
Click to collapse
It's ok!
Don't charge it till 100%, because if the file is corrupted it isn't a real 100%, do you understand? Let it charge some hours to grant it is fully charged!
Bye and good luck!
If you have any question more, just quote my post

[Q] Battery charging only up to 85%

Hi,
I've recently replaced my battery and now it is not charging fully to 100% but only to 85%. Sometimes it displays it is fully charged but after a minute the percentage dropped to 85%. I've already tried multiple chargers with no result. The only thing that works is bump charging. It looks like the battery is just working fine but the displayed percentage is not right. Is there a way to 'reset' this statistic? Removing the battery.bin didn't do anything for me.
Is there a way to check if the battery is really fully charged despite the wrong displayed percentage?

Faeshaas said:
Hi,
I've recently replaced my battery and now it is not charging fully to 100% but only to 85%. Sometimes it displays it is fully charged but after a minute the percentage dropped to 85%. I've already tried multiple chargers with no result. The only thing that works is bump charging. It looks like the battery is just working fine but the displayed percentage is not right. Is there a way to 'reset' this statistic? Removing the battery.bin didn't do anything for me.
Is there a way to check if the battery is really fully charged despite the wrong displayed percentage?
Click to expand...
Click to collapse
To fix what you are doing you have to be rooted.
1. Root your n4
2. Download root browser from playstore
3. Go to data/system directory and delete batterystats.bin
4. Accept superuser access
5. Reboot and let the battery drain till 0%
Anyway, I don't know if it will be a battery calibration issue, because if u had to replace your previous battery maybe your phone doesn't manage battery well and destroy them... Try, report, and we will make conclusions

luiseteyo said:
To fix what you are doing you have to be rooted.
1. Root your n4
2. Download root browser from playstore
3. Go to data/system directory and delete batterystats.bin
4. Accept superuser access
5. Reboot and let the battery drain till 0%
Anyway, I don't know if it will be a battery calibration issue, because if u had to replace your previous battery maybe your phone doesn't manage battery well and destroy them... Try, report, and we will make conclusions
Click to expand...
Click to collapse
I just deleted it, it's worth a try!
The weird thing is bump charging will result in a 100% charge and the battery seems to work normally (20hours of battery time with normal use).

luiseteyo said:
To fix what you are doing you have to be rooted.
1. Root your n4
2. Download root browser from playstore
3. Go to data/system directory and delete batterystats.bin
4. Accept superuser access
5. Reboot and let the battery drain till 0%
Anyway, I don't know if it will be a battery calibration issue, because if u had to replace your previous battery maybe your phone doesn't manage battery well and destroy them... Try, report, and we will make conclusions
Click to expand...
Click to collapse
It will be a battery calibration issue since that file only stores the statistics of apps. It gets deleted upon reboot. So this won't affect the measurements in any way.
Sent from my Nexus 4 using Tapatalk

Faeshaas said:
Hi,
I've recently replaced my battery and now it is not charging fully to 100% but only to 85%. Sometimes it displays it is fully charged but after a minute the percentage dropped to 85%. I've already tried multiple chargers with no result. The only thing that works is bump charging. It looks like the battery is just working fine but the displayed percentage is not right. Is there a way to 'reset' this statistic? Removing the battery.bin didn't do anything for me.
Is there a way to check if the battery is really fully charged despite the wrong displayed percentage?
Click to expand...
Click to collapse
Connect the charger to the Nexus 4, then insert the plug.
Press the power button and hold it until the device turns on. Immediately after this, press and hold the Volume Down key, not releasing the power button. Appears on the screen Start, circled arrow.
Pressing the Volume Down key, select Power off and activate it by pressing the power button.
When the phone is turned off, unplug the charger and plug it in again. then turn on the phone.

Both solutions didn't work for me. Is there a way to confirm that even if Android displays a value of 85% the battery is fully charged? Because I don't care that much wrong percentage is displayed, I just wanna know for sure the battery is ok.

Faeshaas said:
Both solutions didn't work for me. Is there a way to confirm that even if Android displays a value of 85% the battery is fully charged? Because I don't care that much wrong percentage is displayed, I just wanna know for sure the battery is ok.
Click to expand...
Click to collapse
you should try reflashing your rom

Wipe cache, dalvik cache and battery stats in recovery then fix permissions and reboot.

Puneet Singh Chauhan said:
Wipe cache, dalvik cache and battery stats in recovery then fix permissions and reboot.
Click to expand...
Click to collapse
As I already said in the 3rd post here. That is absolutely useless.
Sent from my Nexus 4 using Tapatalk

luiseteyo said:
To fix what you are doing you have to be rooted.
1. Root your n4
2. Download root browser from playstore
3. Go to data/system directory and delete batterystats.bin
4. Accept superuser access
5. Reboot and let the battery drain till 0%
Anyway, I don't know if it will be a battery calibration issue, because if u had to replace your previous battery maybe your phone doesn't manage battery well and destroy them... Try, report, and we will make conclusions
Click to expand...
Click to collapse
Or restart your phone and battery stats will reset.

Battery 🔋 Calibration

Hiii guysss...!!!!
Now Days Rooting is our daily part of life
after lot off customization and custom Roms
some times our battery gives some problems such as battery drain all other
so i found one solution on it......
Battery Calibration ......!!!!!
No Need Of Any App For It Just Follow this simple steps ....
We will start with a basic necessity for good battery performance CALIBRATION.
Calibration is the process where you get your battery to hold as much charge as it can and the battery meter to display the correct reading. I think when you do this, you will be suprised how much more charge your battery takes than the phone thinks it needs.
1. Charge your phone 100% while it’s on.
2. Use root explorer, astro, or file manager of choice and go to /data/system and find batterystat.bin. Delete it. Then use your smartphone as usual ?
After total use You can power it off on 15% also (beetter to use till shutdown ) but not upper on that .....!!!
3. power off and allow charge it up to 100%. (This may take longer than you think)
4. After Full Charge Power it on, and use it....
5. Go back to step 2 and repeat one more time.
6. After doing this procedure 2-3 times your mobile ? will give you cool ? battery ? backup surely
It's works on every version 4.0 kitkat -6.0 marshmallow
Thank You ...
ViksAndroiD
Hope it's become helpful to everyone

It's useless. batterystat.bin file recreated itself when fully charge your phone!

Alexey71 said:
It's useless. batterystat.bin file recreated itself when fully charge your phone!
Click to expand...
Click to collapse
It's not useless.
This is how you calibrate a lithium-ion battery.

JonnyBorneo said:
It's not useless.
This is how you calibrate a lithium-ion battery.
Click to expand...
Click to collapse
batterystat.bin deleted and create automatically, each time after charging

Alexey71 said:
batterystat.bin deleted and create automatically, each time after charging
Click to expand...
Click to collapse
The file doesn't have anything to do with calibration.
It's just a log file. By deleting it you create a blank log and it starts anew.

Battery Performance on Huawei Ascend XT

Let's discuss battery performance, issues, battery monitoring apps, etc in this thread for the Huawei Ascend XT.
The non-user replaceable XT battery is rated at 3000 mAh.
I like to use Gsam Battery Monitor app.

divineBliss said:
Let's discuss battery performance, issues, battery monitoring apps, etc in this thread for the Huawei Ascend XT.
The non-user replaceable XT battery is rated at 3000 mAh.
I like to use Gsam Battery Monitor app.
Click to expand...
Click to collapse
My battery usage is around 9.6% an hour. Built in battery monitor must have been altered by my deleting spree. I also got rid of the phone manager too. I've been on battery for 35 minutes and have lost 6% battery. Thinking about going back to stock and taking a different approach as somewhere along the lines I mutated the Android system (using most of the battery).

Please specify what radios you have on during usage and screen brightness and screen on time is a big factor. I didn't go crazy and delete stuff other than AT&T bloatware and apps I don't use, and I'm quite happy. Maybe good idea to go back to stock after making a TWRP backup and do debloat in phases with days in between .

Did you try suggested battery app?

Yes I'm using gsam and now I'm up to ~13% usage an hour. BT is always off. Wi-Fi is always connected. Screen is always at auto so it's pretty dark. I'm going to go back to stock so I can figure out what exactly is draining battery.

Gsam should tell you in apps list. Did it prompt you for permissions to grant via adb pm grant?
jarrettsuydam said:
Yes I'm using gsam and now I'm up to ~13% usage an hour. BT is always off. Wi-Fi is always connected. Screen is always at auto so it's pretty dark. I'm going to go back to stock so I can figure out what exactly is draining battery.
Click to expand...
Click to collapse

divineBliss said:
Gsam should tell you in apps list. Did it prompt you for permissions to grant via adb pm grant?
Click to expand...
Click to collapse
It didn't, it asked for root at one point. Android system was chugging it all down. So it must have been a system app or service I either deleted or disabled. I'm back on stock now and we shall see.

I always notice phone lost more battery after rooted. Also removing wrong app can caused it too. When the system look for that app and it's not there. It keeps looking and cause the phone always ON (even screen off).
Going back to stock is one way to fix because you are not sure which app you removed wrong after rooted

That gives me an idea. I would do an "adb shell logcat" and see if it's spewing errors/FATALS if you suspect battery issues. I've seen this when something can't be found by system at startup.

How can I get back to stock?

Flash your TWRP back you made following the root/TWRP instructions . Should work, but don't restore the stock recovery unless you want that. Restore boot, system, and maybe data. Wipe cache and dalvik from TWRP before rebooting. Good luck .
sweetboy02125 said:
How can I get back to stock?
Click to expand...
Click to collapse

Has anyone used better battery stats? There is a free version on XDA that will point out partial and full wakelocks that would affect battery life. I have not done this yet, if anyone has please report back.

divineBliss said:
Flash your TWRP back you made following the root/TWRP instructions . Should work, but don't restore the stock recovery unless you want that. Restore boot, system, and maybe data. Wipe cache and dalvik from TWRP before rebooting. Good luck .
Click to expand...
Click to collapse
I deleted that. I thought i don't need that after rooted. I got fast battery drain due to accidentally remove apps that needed in the systems. Oh well

Go back to the main thread and find who shared their stock TWRP. That should fix you up.
sweetboy02125 said:
I deleted that. I thought i don't need that after rooted. I got fast battery drain due to accidentally remove apps that needed in the systems. Oh well
Click to expand...
Click to collapse

While you are looking for a stock TWRP back, go into TWRP and wipe cache and dalvik, then reboot. Phone will sit on AT&T logo for about 30 minutes. Maybe it will fix the battery drain problem. Before you do that, do a logcat and see if it's spewing fatals or if you see any hints.

divineBliss said:
While you are looking for a stock TWRP back, go into TWRP and wipe cache and dalvik, then reboot. Phone will sit on AT&T logo for about 30 minutes. Maybe it will fix the battery drain problem. Before you do that, do a logcat and see if it's spewing fatals or if you see any hints.
Click to expand...
Click to collapse
I wipe 2 cached and david, phone have normal reboot, less than 1 minute. Nothing changes. The "awake" time in battery management show 1hours screen on and 55% left (from 100%). I don't have this before rooting, AWAKE and SCREEN ON always sync. NOw AWAKE even SCREEN OFF

sweetboy02125 said:
I wipe 2 cached and david, phone have normal reboot, less than 1 minute. Nothing changes. The "awake" time in battery management show 1hours screen on and 55% left (from 100%). I don't have this before rooting, AWAKE and SCREEN ON always sync. NOw AWAKE even SCREEN OFF
Click to expand...
Click to collapse
Use better battery stats app to see what your wakelock is.

GSam Battery Monitor can also tell you about wakelocks. I'm not sure if it breaks it out by app or not. Are you using free or pay BBS?
powerserge1 said:
Use better battery stats app to see what your wakelock is.
Click to expand...
Click to collapse

Remove PowerGenie app Huawei uses. These are the custom profiles they designed and they are crap. I go to bed at 6 am and wakeup at 3 and lose about 3℅. No lie. Ive always found the the OEMs on die power management better than placebo apps. Hardware based will out do software anyday of the week. My own opinion only.

What radios (WiFi, cell, GPS, etc) do you have on during 6am-3pm? I put mine in airplane mode during sleep hours.
shawnchalfant said:
Remove PowerGenie app Huawei uses. These are the custom profiles they designed and they are crap. I go to bed at 6 am and wakeup at 3 and lose about 3℅. No lie. Ive always found the the OEMs on die power management better than placebo apps. Hardware based will out do software anyday of the week. My own opinion only.
Click to expand...
Click to collapse