Database Develop

[Q] battery percentage not accurate

Hi Guys!!
i've done what this link told
http://forum.xda-developers.com/showpost.php?p=10092321&postcount=11053
but everytime i reach 100% and unplug the charger, my battery percentage immediately shows 97%, be it charging with the phone off or on....
i already did wipe my battery stats in recovery a few times, the first time only it showed that the stats were wiped, after that every time i wipe the stats, it immediately goes back to the previous menu, without stating whether the wipe was carried out or not....
can someone help this noob out here.... thnx

FYI, i just installed darky's rom v8.0 with Voodoo's kernel 5.2(lagfix disabled)
when i was on stock, my 100% could last me about nearly half an hour

I have this problem too. (I am on Darky 9.02 and have seen it in Darky 8.0 too). BUT if your battery life is satisfactory then don't worry about it.

hows the performance on v9.02 bro?

mab71 said:
hows the performance on v9.02 bro?
Click to expand...
Click to collapse
Here is another post on calibration (from Darky himself)
http://darky.ficeto.com/community/index.php?threads/guide-how-to-calibrate-your-battery.321/

mab71 said:
hows the performance on v9.02 bro?
Click to expand...
Click to collapse
9.02 is good but then so was 8.00. I personally think 8.00 was faster but its only been a few days and am still experimenting. I may remove the lag fix and still need to see if my battery is draining faster.

Also look at this post: Has some interesting but unverified info about the drop from 100% to 97/98% after unplugging
http://darky.ficeto.com/community/i...-how-to-calibrate-your-battery.321/#post-3839

Do you really want it on 100%? Easy, once it says charged, leave it on the charger for another hour and when you unplugged it should stay 100 for a while
Sent from my GT-I9000 using XDA App

Problem posted hundreds of times along with solutions like search the Rom makers forum and read the posts re this problem for starters .
Simple solution save time and effort is to ignore it .
jje

thanx all for the advices.... tried the QueenAmy method, result is:
heavily used phone: battery 'died' at 2%(???)
charged phone until 100%(phone off)
switched phone on while still charging: 97% (didnt have to unplug charger)
waited...then it went from 97% straight to 100%.(funny)
then went into recovery to wipe bat stats.
rebooted and unplugged charger, battery still at 97%....
now trying to charge a bit more longer to see if can change anything... (fingers crossed)

icejagans said:
Do you really want it on 100%? Easy, once it says charged, leave it on the charger for another hour and when you unplugged it should stay 100 for a while
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
not working bro...
left it on for about an hour, unplugged, straightaway the percentage drops to 98...

It's just a change in 2.2.1.
In 2.1/2.2, they 'stretched' out the battery life a bit to mark it up to 100%, in 2.2.1 they decided to just show it at the actual value. The reason your battery won't charge to 100% is to prolong the battery life, because if the charger always charged to 100% it would have a high chance of overcharging and damaging your battery over time.
There's no real change in battery life.

I reverted back to 2.2 and still have the problem. Maybe i shouldve flashed on 100% battery... Is it possible to solve if i do another fresh flash with 100% battery?
Sent from my GT-I9000 using XDA App

nwsk said:
It's just a change in 2.2.1.
In 2.1/2.2, they 'stretched' out the battery life a bit to mark it up to 100%, in 2.2.1 they decided to just show it at the actual value. The reason your battery won't charge to 100% is to prolong the battery life, because if the charger always charged to 100% it would have a high chance of overcharging and damaging your battery over time.
There's no real change in battery life.
Click to expand...
Click to collapse
Just to clarify this, you actually cant over charge the battery on the SGS nor Li-Ion for that matter, what happens here is that the battery goes on trickle charge pre 2.2.1 and battery degrades faster if its kept at 100%, 40% is optimal for storage now with the recent changes the phone will pretend it has charged upto 100% but will stop anywhere from 99~97% yes there is no loss in battery life but dont consider 97% as the new 100%, theres already a 3% loss in this to begin with.

EarlZ said:
Just to clarify this, you actually cant over charge the battery on the SGS nor Li-Ion for that matter, what happens here is that the battery goes on trickle charge pre 2.2.1 and battery degrades faster if its kept at 100%, 40% is optimal for storage now with the recent changes the phone will pretend it has charged upto 100% but will stop anywhere from 99~97% yes there is no loss in battery life but dont consider 97% as the new 100%, theres already a 3% loss in this to begin with.
Click to expand...
Click to collapse
thanks Earl.... but is there a solution for my prob here, or do i just have to ignore it?

thanks Earl.... but is there a solution for my prob here, or do i just have to ignore it?
Is not a problem its the current design .
all the other millions of posts on the subject no way found to increase the figure .
jje

thnx mate.... i guess i'll just have to chill about this....n stop wasting my time right... ;-)

[Q]Battery problem?

Hello all,
I am now on Nova 8, after trying Cm7, then stock, then nova 8. The problem im facing is that I think the battery life is shorter than it should be. I used battery calibration app and when its close to 0% still shows 3000+mv, is this correct? Or it should be close to 0. After using this App the problem persist. Im not sure if its my imagination or the battery should last longer but with a light useage the phone hardly reaches a day.
Thank you in advance

haitzo said:
Hello all,
I am now on Nova 8, after trying Cm7, then stock, then nova 8. The problem im facing is that I think the battery life is shorter than it should be. I used battery calibration app and when its close to 0% still shows 3000+mv, is this correct? Or it should be close to 0. After using this App the problem persist. Im not sure if its my imagination or the battery should last longer but with a light useage the phone hardly reaches a day.
Thank you in advance
Click to expand...
Click to collapse
Hy, when u'r phone is 100% use battery calibration then discharge u'r phone and whait to close (0%). Then leav it to charge 100% with out turning it on, is should work

haitzo said:
Hello all,
I am now on Nova 8, after trying Cm7, then stock, then nova 8. The problem im facing is that I think the battery life is shorter than it should be. I used battery calibration app and when its close to 0% still shows 3000+mv, is this correct? Or it should be close to 0. After using this App the problem persist. Im not sure if its my imagination or the battery should last longer but with a light useage the phone hardly reaches a day.
Thank you in advance
Click to expand...
Click to collapse
First, this is the Development Section and not for asking questions. This should be posted in General Section. (Reported and now moved)
Whenever you flash a new ROM or exchanging one for another, you should always wipe battery stats (CWM). You can however do this now directly without that app. Charge it 100%, then reboot to recovey (CWM) then wipe battery stats.
To answer your question. You might have mistaken a battery drain would equal to 0mV. Batteries like ours has 4200+mV at full charge, and a discharged rate of about 3000+/-mV. This could be well explained by someone like huexxx.. XD CMIIW

Battery life CM9 nova

hi,
I'm new in here, hope can help.
I just mod my rom to CM9 Nova HD RC9-18, find out my battery life is draining. After full charge and use for 1hr, 50% is gone. Any one can share you experience here. Live wallpaper is turn off and other as per default.
Thanks

is this normal for this rom? under the battery status, 50m for 100% charged battery

i think it is impossible to use,when i use nova,screenoff 12hr just 2%,

[Q] Automatic Battery Mis-Calibration

Currently Running
--> GingerDx V023
--> Stock Kernel.
I wiped out battery stats from CWM just after flashing the new ROM , but after calibration , and after charging the phone the battery gets mis-calibrated and gives me an error in battery percentage of about 20-25%
I calibrate again , and then again it mis-calibrates again.
To explain more , Suppose I have full 100% battery and I calibrate battery. I normally use my phone , and restart my phone after listening to music etc.
I get true and correct battery percentage every time I restart.
But when I charge my phone when it has about 10% battery , it charges up to 100% in about 50 minutes.
And when I restart my phone , it says I have only 77% battery left.
Mis-calibration is only when I charge my phone , not when I am using it normally.
I am not having problems with battery life as such when I finally manage to charge it to 100% after restarting my phone several times to actually get it fully charged (about 30+ hours of moderate usage after full charge) , but I don't get the true battery percentage on my phone when I charge , and my phone doesn't charge to its full capacity in one go.
I re-flashed GDx V023 three times , but the problem persists. I tried all calibration techniques and apps in the market but failed.
What can I do ?

Mayank77 said:
Currently Running
--> GingerDx V023
--> Stock Kernel.
I wiped out battery stats from CWM just after flashing the new ROM , but after calibration , and after charging the phone the battery gets mis-calibrated and gives me an error in battery percentage of about 20-25%
I calibrate again , and then again it mis-calibrates again.
To explain more , Suppose I have full 100% battery and I calibrate battery. I normally use my phone , and restart my phone after listening to music etc.
I get true and correct battery percentage every time I restart.
But when I charge my phone when it has about 10% battery , it charges up to 100% in about 50 minutes.
And when I restart my phone , it says I have only 77% battery left.
Mis-calibration is only when I charge my phone , not when I am using it normally.
I am not having problems with battery life as such when I finally manage to charge it to 100% after restarting my phone several times to actually get it fully charged (about 30+ hours of moderate usage after full charge) , but I don't get the true battery percentage on my phone when I charge , and my phone doesn't charge to its full capacity in one go.
I re-flashed GDx V023 three times , but the problem persists. I tried all calibration techniques and apps in the market but failed.
What can I do ?
Click to expand...
Click to collapse
Did you ever try to full wipe your system?
Try to full drain your battery after calibration,
maybe it will solve your problem.
Sorry for my bad english,

acoongg said:
Did you ever try to full wipe your system?
Try to full drain your battery after calibration,
maybe it will solve your problem.
Sorry for my bad english,
Click to expand...
Click to collapse
Initiated full wipe each time.
Not tried full drain yet. Let me do it and then see if it works .

Sounds very much like a problem I encountered with my spare battery (actually, 2 spare batteries). It also appears to (in part) depend on the ROM. Stock ROMs don't seem to have that problem. Consider it a kind of tradeoff for whatever benefit you're deriving from your custom ROM.

Still not able to fix
Not sure what I can do.
Never had this problem with GingerDx V022

Mayank77 said:
Still not able to fix
Not sure what I can do.
Never had this problem with GingerDx V022
Click to expand...
Click to collapse
you can revert back to GingerDx V022 if you want better battery life

acoongg said:
you can revert back to GingerDx V022 if you want better battery life
Click to expand...
Click to collapse
I wish I hadn't had to revert back
But that's what seems like it now.

battery drain in ics

i am experiencing battery drainage in ics rom.i did battery calibration with the battery calibration app but now it seems tht battery is draining even faster.battery hardly lasts a day with very little usage.i did a full wipe nd then again installed the rom but no help.i am using set cpu screen of profile with max 400 mhz,one task manager app running,but battery drains when the screen is off. how do i improve this battery life? is there any battery saving app which could help? is there any other way of battery calibration which can help? (have not tried the recovery process)..or any way to make my battery last the longest?? please help.
i am using AOKP 4.04 infinitum v.2.2

mohaimed said:
i am experiencing battery drainage in ics rom.i did battery calibration with the battery calibration app but now it seems tht battery is draining even faster.battery hardly lasts a day with very little usage.i did a full wipe nd then again installed the rom but no help.i am using set cpu screen of profile with max 400 mhz,one task manager app running,but battery drains when the screen is off. how do i improve this battery life? is there any battery saving app which could help? is there any other way of battery calibration which can help? (have not tried the recovery process)..or any way to make my battery last the longest?? please help.
i am using AOKP 4.04 infinitum v.2.2
Click to expand...
Click to collapse
Well that's your problem. I'm using the latest CM9 nightly update-cm-9-20120425-NIGHTLY-galaxysmtd-signed.zip and I get at least 2 days.

pk1025 said:
Well that's your problem. I'm using the latest CM9 nightly update-cm-9-20120425-NIGHTLY-galaxysmtd-signed.zip and I get at least 2 days.
Click to expand...
Click to collapse
what is ur display on time? how is cm9 by the way??? does it have any bugs?? i play a lot of games and also hd games lije backstab and asphalt.it does not lag on infinitum does these lag on cm9? if cm9 battery life is tht good thn i myt shift to cm9.could u help me here ??