[Q] [HELP] Samsung galaxy tab 2 battery problem - Galaxy Tab 2 Accessories

Hey guys..
I bought a galaxy tab 2 two weks ago from a friend who also used it for just 2 weeks !
It worked fine but recently I face a problem with the battery !
The battery drains to 40% after playing fifa 14 for just 1 hours with 30% brightness !
I searched for a solution in this forum and I read a threat about battery calibration which said that I shall charge it to 100% shutdown for an hour , restart it and use it until you get 40% battery and shut it down for 5 hours etc...
Anyway I tried the calibration method but it doesn't help and probably the situation get worst because this morning I used it until battery drained to 80% then I resart it and I found that battery drained to 34% !
I find many calibration app in googleplay but I'm not sure if it will help me in my situation or not !
So would anyone please help me solve this problem ?
thanks previously ( sorry for my bad english )
ps : I'm an amateur user of galaxy tab and my tablet is not rooted yet

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abuyussuf4 said:
ps : I'm an amateur user of galaxy tab and my tablet is not rooted yet
Click to expand...
Click to collapse
Well, calibration apps and doing it manually [ie .messing with the .bin] won't work due to it not being rooted. But on that note, I don't think you would have any reason to calibrate it. To my knowledge only flashing ROMs and things of the sort can cause it to be out of calibration. [not 100% sure though] Normaly You would have to charge to 100%, then let it die, without any charging. Go from 100% to 0% then 0 back to 100% in one charge.
Hope ya get it right. If anything ask him if he still has the receipt if he got it new. Could possibly use the warranty.

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Ryan the Skitzo said:
Well, calibration apps and doing it manually [ie .messing with the .bin] won't work due to it not being rooted. But on that note, I don't think you would have any reason to calibrate it. To my knowledge only flashing ROMs and things of the sort can cause it to be out of calibration. [not 100% sure though] Normaly You would have to charge to 100%, then let it die, without any charging. Go from 100% to 0% then 0 back to 100% in one charge.
Hope ya get it right. If anything ask him if he still has the receipt if he got it new. Could possibly use the warranty.
Click to expand...
Click to collapse
Thank you for answering my thread ! Honestly my brother root it for me but am still facing problem because i'm just getting 2 hours autonomie instead of 5, 5 hours ! Would you please help me to solve my problem ! Thanks previously !

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abuyussuf4 said:
Thank you for answering my thread ! Honestly my brother root it for me but am still facing problem because i'm just getting 2 hours autonomie instead of 5, 5 hours ! Would you please help me to solve my problem ! Thanks previously !
Click to expand...
Click to collapse
Well, try a calibration app 1st. If that doesn't work I don't how to "fix" it. You could do things to reduce battery drain though. Lowering the CPU max frequency, a powersave governor, undervolting the CPU, keep brightness to a minimum are good ways.

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Ryan the Skitzo said:
Well, try a calibration app 1st. If that doesn't work I don't how to "fix" it. You could do things to reduce battery drain though. Lowering the CPU max frequency, a powersave governor, undervolting the CPU, keep brightness to a minimum are good ways.
Click to expand...
Click to collapse
I tried 3 but it still the same ! I will be so thankful for you if you give me names of good apps for lowering the CPU frequency ! I'm actually starting using battery doctor ! Is it a good app ?

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It helps to a degree, but I'm thinking your problem is the battery itself. Was it treated badly? Like leaving plugged in for long periods of time or left in really hot cars.
Also turn off location and Bluetooth
Sent from my GT-P3110 using XDA Premium 4 mobile app

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No , that never happen ! I always unplug the chargeur when it is fullh charged and I nevrr use it while am on the car or let it there ! Location is always off anf I only switch on BT when I need it !

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abuyussuf4 said:
Hey guys..
I bought a galaxy tab 2 two weks ago from a friend who also used it for just 2 weeks !
It worked fine but recently I face a problem with the battery !
The battery drains to 40% after playing fifa 14 for just 1 hours with 30% brightness !
I searched for a solution in this forum and I read a threat about battery calibration which said that I shall charge it to 100% shutdown for an hour , restart it and use it until you get 40% battery and shut it down for 5 hours etc...
Anyway I tried the calibration method but it doesn't help and probably the situation get worst because this morning I used it until battery drained to 80% then I resart it and I found that battery drained to 34% !
I find many calibration app in googleplay but I'm not sure if it will help me in my situation or not !
So would anyone please help me solve this problem ?
thanks previously ( sorry for my bad english )
ps : I'm an amateur user of galaxy tab and my tablet is not rooted yet
Click to expand...
Click to collapse
If you are rooted, try doing factory reset(wipe dat, cache, dalvik), wipe battery stats, and maybe install a lightweight custom ROM with reported good battery life...
(<--Remember to Thank me if this helps :good

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The Dork Knight Rises said:
If you are rooted, try doing factory reset(wipe dat, cache, dalvik), wipe battery stats, and maybe install a lightweight custom ROM with reported good battery life...
(<--Remember to Thank me if this helps :good
Click to expand...
Click to collapse
Actually calibration wipe battery stats but it still the same ! After a small search on the net , many people advice me to install pac rom and they said that it is the best rom for battery life! Did anyone try it ?

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abuyussuf4 said:
Actually calibration wipe battery stats but it still the same ! After a small search on the net , many people advice me to install pac rom and they said that it is the best rom for battery life! Did anyone try it ?
Click to expand...
Click to collapse
I haven't tried it myself, but I have heard that it's a very good ROM. So I'd say, go for it!

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The Dork Knight Rises said:
I haven't tried it myself, but I have heard that it's a very good ROM. So I'd say, go for it!
Click to expand...
Click to collapse
Thanks for being always here to here . As I told you I'm an amateur and I don't know how to install it . I'm also afraid from Ram usage of this rom ! My brother have a samsung galaxy s4 with 4.3 android and its ram usage is 700mb while it is stable and in galaxy tab 2 I only have 769mb ! So would I have such a ram usage if I Install this rom ?

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abuyussuf4 said:
Thanks for being always here to here . As I told you I'm an amateur and I don't know how to install it . I'm also afraid from Ram usage of this rom ! My brother have a samsung galaxy s4 with 4.3 android and its ram usage is 700mb while it is stable and in galaxy tab 2 I only have 769mb ! So would I have such a ram usage if I Install this rom ?
Click to expand...
Click to collapse
Bro stock rom is know to have battery issues and ram leaks as it has a lot of apps and unwanted files (commonly called as bloatware )
1st i noticed tha tu have 769mb ram so you are still in stock kernel (i guess) first flash a new recovery from here http://forum.xda-developers.com/showpost.php?p=51314025&postcount=296 next flash Slim Rom(u can use any rom but as the name suggest it is verry fast and smoot and also hasa good battery management) from here http://www.slimroms.net/index.php/downloads next flash gapps from there itself .next flash a kernel such as Agni (highly recomended)

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iamashwin said:
Bro stock rom is know to have battery issues and ram leaks as it has a lot of apps and unwanted files (commonly called as bloatware )
1st i noticed tha tu have 769mb ram so you are still in stock kernel (i guess) first flash a new recovery from here http://forum.xda-developers.com/showpost.php?p=51314025&postcount=296 next flash Slim Rom(u can use any rom but as the name suggest it is verry fast and smoot and also hasa good battery management) from here http://www.slimroms.net/index.php/downloads next flash gapps from there itself .next flash a kernel such as Agni (highly recomended)
Click to expand...
Click to collapse
Quick and good answer You got a thanks from me and thank you very much . I'd like to install pac rom , would you please help me ? They said it is one in all rom !

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abuyussuf4 said:
Thanks for being always here to here . As I told you I'm an amateur and I don't know how to install it . I'm also afraid from Ram usage of this rom ! My brother have a samsung galaxy s4 with 4.3 android and its ram usage is 700mb while it is stable and in galaxy tab 2 I only have 769mb ! So would I have such a ram usage if I Install this rom ?
Click to expand...
Click to collapse
First thing you should know, you don't havta say thank you all the time, just click the Thanks button, that's what it's for.
And I actually installed PAC ROM today. It's an awesome ROM with a lot of cool features...
As for RAM usage, I dont think that should be a problem. The ROM should be optimised for your device, so it won't use 700mb at rest.
Give it a try, if you find it's slow or laggy, I can suggest more ROMs. :good:
(<---Remember to Thank me if I helped)

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I would use CM10.1.3 for battery life, as I used to get 1% lose overnight. (I use SlimKat now which may be not as good in the battery department, but for me the latest OS is essential, but that's just me.)

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The Dork Knight Rises said:
First thing you should know, you don't havta say thank you all the time, just click the Thanks button, that's what it's for.
And I actually installed PAC ROM today. It's an awesome ROM with a lot of cool features...
As for RAM usage, I dont think that should be a problem. The ROM should be optimised for your device, so it won't use 700mb at rest.
Give it a try, if you find it's slow or laggy, I can suggest more ROMs. :good:
(<---Remember to Thank me if I helped)
Click to expand...
Click to collapse
Here's what a senior member said :
"Borther. I would like to quote one thing first of all; all kitkat based ROMs are battery suckers. So you will not get good battery backup as you might have seen in 4.1.2 or 4.2.2. Xposed framework consumes lot of RAM,i prefer not to use it. PAC ROM is just like another KITKAT ROMs that provides loads of features but with an inefficient battery backup. You will see huge battery drain yourself. I did tried all Kitkat based ROMs. Even all kitkat based ROMs have shuttering/noise sounds while playing some games like Real-Racing 3 etc. I suggest to go with Stock ROM 4.2.2 based on your region or cm 10.2 based ROMs(if available). Root it(if stock) and remove all the samsung bloatwares from it. Then you will not get any kind of battery drain or Lag while playing high-end games. But ultimately choice is all yours."
Thats why am still confused ! So what is the usage of ram at rest ?! You install pac rom kitkat or lower version ? What about battery , did it drain too fast ?!
And how did you install it please !? Am running sg tab 2 p3110 with SuperSU root and the latest version of philz as a custom recovery

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abuyussuf4 said:
Here's what a senior member said :
"Borther. I would like to quote one thing first of all; all kitkat based ROMs are battery suckers. So you will not get good battery backup as you might have.........bla bla bla bla bla bla bla bla lb..............age of ram at rest ?! You install pac rom kitkat or lower version ? What about battery , did it drain too fast ?!
And how did you install it please !? Am running sg tab 2 p3110 with SuperSU root and the latest version of philz as a custom recovery
Click to expand...
Click to collapse
I have a p3110 with latest philz recovery and dual booting pac 4.4.2 and Stock 4.2.2 with Next blackhawk kernel
OCed at 1.2GHz and both data and cache formated to F2FS and
1) I have no Lag on both the roms(primary and secondary)
2)1% loss of battery from night to day(9:30 pm to 5:26 am)
3)Play modern combat with no glitch
so i suggest you to do that!!

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abuyussuf4 said:
Here's what a senior member said :
"Borther. I would like to quote one thing first of all; all kitkat based ROMs are battery suckers. So you will not get good battery backup as you might have seen in 4.1.2 or 4.2.2. Xposed framework consumes lot of RAM,i prefer not to use it. PAC ROM is just like another KITKAT ROMs that provides loads of features but with an inefficient battery backup. You will see huge battery drain yourself. I did tried all Kitkat based ROMs. Even all kitkat based ROMs have shuttering/noise sounds while playing some games like Real-Racing 3 etc. I suggest to go with Stock ROM 4.2.2 based on your region or cm 10.2 based ROMs(if available). Root it(if stock) and remove all the samsung bloatwares from it. Then you will not get any kind of battery drain or Lag while playing high-end games. But ultimately choice is all yours."
Thats why am still confused ! So what is the usage of ram at rest ?! You install pac rom kitkat or lower version ? What about battery , did it drain too fast ?!
And how did you install it please !? Am running sg tab 2 p3110 with SuperSU root and the latest version of philz as a custom recovery
Click to expand...
Click to collapse
I installed PAC(KitKat, latest nightly) on my GT-N7000(Galaxy Note) which has 778mb available RAM, and I get around 380mb used after clearing recents, and 355-ish after the phone has been at rest for some time. Mind you I haven't got too many apps installed which have background services, though. But I'd still say it's good RAM management.
But as for what you should do, I think you should take @iamashwin's advice...He knows what he's talking about. @lokesh.3440 suggested the stock option too, so you really should try it. :good:

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Thank you all for support ing me ( pressing thank bottom is done ) but I decided to install cm 10.1.3 since it is recommended in many threads for battery life . Would anyone please explain to me what is a tabletUi patch ?

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abuyussuf4 said:
Thank you all for support ing me ( pressing thank bottom is done ) but I decided to install cm 10.1.3 since it is recommended in many threads for battery life . Would anyone please explain to me what is a tabletUi patch ?
Click to expand...
Click to collapse
I'm not sure...I would think it's a patch to give you tablet UI (I know, I know...I'm a genius), but since you own a tablet itself...
I think it's some kinda fix for ROMs for tablet ported from phone ROMs...