Develop Bugs

Best way to calibrate battery

Everytime I reboot my phone my battery drops a significant amount. I tried charging it in full, unplugging it, & doing it again & then wipe battery stats but its still the same. Anything else I could do?
Sent from my SPH-D700 using XDA Premium App

shakim24 said:
Everytime I reboot my phone my battery drops a significant amount. I tried charging it in full, unplugging it, & doing it again & then wipe battery stats but its still the same. Anything else I could do?
Sent from my SPH-D700 using XDA Premium App
Click to expand...
Click to collapse
There are different theories/methods for this. I charge to full, unplug, wipe battery stats, plug in and charge to full again, wipe stats then let it run down to about 15% and recharge and wipe one last time. People will say my way is crap but it seems to help. Also, just letting the battery run down and charging back up seem to condition the battery to your new setup. There are several little tweaks made by devs in pursuit of better battery life so it may read inaccurately at first. Let your battery settle in. I say in a day or two, you will see improvement
Sent from my SPH-D700 using XDA Premium App

Dunno about the "best way", but this is a convenient way without having to boot into CWM.
Battery Calibration
NéMa
Market link

ghostrid3r said:
Dunno about the "best way", but this is a convenient way without having to boot into CWM.
Battery Calibration
NéMa
Market link
Click to expand...
Click to collapse
Thanks man. Worked well for me
Sent from my SPH-D700 using XDA Premium App

best way!!!!

Need Help

Hi, i just flash giopro v1.6 few days ago, then i use the a2sd script... then my nightmare starts... my gio battery goes to 20% within 3hours with screen off...
then i flash back to [ROM] S5660DXKT8 [08.03.2012][Android 2.3.6] rom, and it also same... i wonder what is going on...

wipe battery stats, and load till 100% while the phone is off

Thanks... I will try now.... another question, is it the a2sd make my phone like this ?? can i flash to other rom and then wipe battery stat ??
Many Thanks...

yydoo said:
Thanks... I will try now.... another question, is it the a2sd make my phone like this ?? can i flash to other rom and then wipe battery stat ??
Many Thanks...
Click to expand...
Click to collapse
if a2sd works fine, it shouldn't.
its problably just the battery calibration, wich after a rom needs to be done, otherwise you can be stuck on 80% for 3 hours, and go from 79% till 30% in 2 minutes, but the battery last as long as normal, it just doesn't give the right % at wich state it is.

I just wipe the battery stat, the battery is still full at the moment, and i download battery calibrator from market... its said charge to full, press the apps calibrate battery button, unplug charger, drain battery all the way down till it shuts off, rechage to full, enjoy your battery...
Is this the way ??
Thanks voetbalremco..

yes. that should do it
Sent from my GT-S5660 using xda premium

voetbalremco said:
yes. that should do it
Sent from my GT-S5660 using xda premium
Click to expand...
Click to collapse
Thank you Voetbalremco...
Sent from my LG-P970 using XDA

Battery percentage! Help please

I'm experiencing a weird error... the battery percentage has been shown wrong.. I'm using chobits 1.8+ merruk pre 2.0...the performance is good but even weird thing is that I had 43% battery once , rebooted the phone to get 65% and another reboot it shows 90% now once I had 3% battery which lasted for an hour..
I did calibrate my battery but am still getting this issue.. Any assistance could be appreciated..
Sent from my GT-S5360 using xda premium

Just use right method
Fully drain ur battery
(make sure phone boots and then swich off Do that 2 - 3 times to sure)
Then charge ur battery 100% in swich off mode
Dont remove ur charger
And wipe battery status via cwm
Boot ur phone and charge 100% and done
Sent from my GT-S5360 using xda premium

Thanks for your reply.. Will try later
Sent from my GT-S5360 using xda premium

[Q] battery calibration for xperia S

hi, i just wanna ask if it is also possible to calibrate our battery or the battery of xperiaS since it is different form other battery because it is built-in?? and if it is possible can you guys suggest ways to calibrate our battery effectively
thank you so much.:good:

You can can.
Empty your battery
Then charge it to 100%
Then go to cwm mode
Then go to advanced and clear your battery and fix permissions
Again empty your battery
Again fully charge it.
Sent from my Xperia ion using xda app-developers app

have you tried it sir? is it effective? thanks

Yes. I tried it. It work for me.
Sent from my Xperia ion using xda app-developers app

Battery stats reset on 100% charge anyway don't they?
Sent from my Android 4.2.1 Xperia S

[Q]Battery Calibration

My battery percentage is not correct. To fix that i have to calibrate my battery. I have tried battery cycles but it wouldn't work. Will wiping system and data (factory reset) fix the battery percentage and calibrate the battery? If not, is there some other way?

There's an option specifically to wipe battery stats in CWM.....
Sent from my GT-I9100 using xda app-developers app

jassim007 said:
My play store ercentage is not correct. To fix that i have to calibrate my battery. I have tried battery cycles but it wouldn't work. Will wiping system and data (factory reset) fix the battery percentage and calibrate the battery? If not, is there some other way?
Click to expand...
Click to collapse
Try battery calibration from playstore

keithross39 said:
There's an option specifically to wipe battery stats in CWM.....
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
That's old. It does not calibrate your battery. That's why they removed it from CWM.

Ahmed.ragab said:
Try battery calibration from playstore
Click to expand...
Click to collapse
I have already tried that. It doesn't calibrate my battery. Is there any other method? If i wipe data and system does it calibrate the battery?!

jassim007 said:
That's old. It does not calibrate your battery. That's why they removed it from CWM.
Click to expand...
Click to collapse
Not true.....on phones like the S2 that have a 'fuel gauge' that may be the case.....but wiping battery stats still works on the W.
The only thing that's been removed from CWM because of its (what they called placebo effect) was 'fix permissions'.
Sent from my GT-I9100 using xda app-developers app

jassim007 said:
My battery percentage is not correct. To fix that i have to calibrate my battery. I have tried battery cycles but it wouldn't work. Will wiping system and data (factory reset) fix the battery percentage and calibrate the battery? If not, is there some other way?
Click to expand...
Click to collapse
Look at this thread:http://forum.xda-developers.com/showpost.php?p=16771651&postcount=41 and to control the battery voltage type *#*#0228#*#*

keithross39 said:
Not true.....on phones like the S2 that have a 'fuel gauge' that may be the case.....but wiping battery stats still works on the W.
The only thing that's been removed from CWM because of its (what they called placebo effect) was 'fix permissions'.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
OK. I will try fix permissions.

keithross39 said:
Not true.....on phones like the S2 that have a 'fuel gauge' that may be the case.....but wiping battery stats still works on the W.
The only thing that's been removed from CWM because of its (what they called placebo effect) was 'fix permissions'.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
I completely forgot. There's no 'fix permissions' in cwm 6.0.4.4. Now what can i do?

In my guide here.....
http://forum.xda-developers.com/showthread.php?t=1941028
I provide links to 2 versions of CWM. You could re install the older version (via terminal emulator as detailed) it includes the wipe battery stats option. As far as I can tell, there's no REAL advantage to be gained from running the latest version of CWM other than the fact that it occupies a slightly smaller memory footprint (due mainly to the decreased functionality).
sent from either my Alliance powered S2 or my ArcoCM powered W via XDA Developers App

keithross39 said:
In my guide here.....
http://forum.xda-developers.com/showthread.php?t=1941028
I provide links to 2 versions of CWM. You could re install the older version (via terminal emulator as detailed) it includes the wipe battery stats option. As far as I can tell, there's no REAL advantage to be gained from running the latest version of CWM other than the fact that it occupies a slightly smaller memory footprint (due mainly to the decreased functionality).
sent from either my Alliance powered S2 or my ArcoCM powered W via XDA Developers App
Click to expand...
Click to collapse
Thanks for the information. It's ok...well i will try myself to fix this problem.

keithross39 said:
Not true.....on phones like the S2 that have a 'fuel gauge' that may be the case.....but wiping battery stats still works on the W.
The only thing that's been removed from CWM because of its (what they called placebo effect) was 'fix permissions'.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
The SGW has a full gauge too but this whiping stats and battery calibration nonsense floating around is a myth.
The ROM is collecting battery stats while it´s running and whiping them on each reboot. So going into recovery and whiping them is the same like just rebooting the device. Just by doing so you are whiping them twice before the phone gets booted again.
Wrong stats do have other reasons than not a well calibrated battery. Like for example a bloated battery that is already dieing or some background processes draining the battery.
The stats are just what you get displayed in your ROM when looking at the battery consumption statistics. They have no influence to how long a battery lasts, even if they are incorrect.
Ok I need to correct my statement above a bit. Depending on which ROM you are using the stats are not whiped on each reboot but on each full (or partial) charge. But also when the phone gets turned completely off and on again. However the rest remains the same. So you can whipe them by going into recovery or by simply charging it and then by removing the charger from the plug.
The results will be te same but they will not fix the root of the problem.