Database Users

Best battery life JB rom

Guys, as I am truly annoyed by the fact stock JB is draining like hell, I would like to know the best rom available now. If any of you have good experience with a particular rom let me know
Sent from my Nexus S using xda app-developers app

Try Adam's ROM I'm getting similar battery life as in ics
Sent from my Nexus S using Tapatalk 2

It's most likely not a ROM issue. I tried Adams and CM10 and had similar battery life. Make sure you turn off google now (just the cards that need to know your location constantly). It might also be that your update didn't go that well, so you might try a factory reset. It could also be a misbehaving app, so when you do a factory reset, maybe test the ROM before restoring/reinstalling your apps. Also, the more information you give us the better we can help. Good luck!

Aktifit said:
It's most likely not a ROM issue. I tried Adams and CM10 and had similar battery life. Make sure you turn off google now (just the cards that need to know your location constantly). It might also be that your update didn't go that well, so you might try a factory reset. It could also be a misbehaving app, so when you do a factory reset, maybe test the ROM before restoring/reinstalling your apps. Also, the more information you give us the better we can help. Good luck!
Click to expand...
Click to collapse
Thanks for the info. I installed the stock factory image 4.0.4 and then waited for the official OTA. I updated and all works well, but I get around 15 hrs on a full charge with some Whatsapp and Facebook use. When I use it more intense with more screentime the battery drains the most. I think a factory reset wont give me more battery life then this, but I know my drain was not so big while I was on ICS.

By the way, which one is the most stable; CW10 (That chocolate river one??) or Jellybelly?

lowtje said:
Thanks for the info. I installed the stock factory image 4.0.4 and then waited for the official OTA. I updated and all works well, but I get around 15 hrs on a full charge with some Whatsapp and Facebook use. When I use it more intense with more screentime the battery drains the most. I think a factory reset wont give me more battery life then this, but I know my drain was not so big while I was on ICS.
Click to expand...
Click to collapse
Sounds weird. But also keep in mind that there are still some apps that don't cope very well with JB, and Facebook has never been Androids best friend . But it doesn't make sense that it's only during screen on, most people report issues related to google now and apps doing **** in the background. If you want to switch ROM anyways, I suggest you use Adams Jellybelly, it's mostly stock (less features means less that can go wrong) and it includes thalamus kernel, which is IMHO the best JB kernel at the moment. I do not recommend any CM10 based ROMs if you're after stability. I assume you checked your battery stats and didn't find anything?
Edit: Chocolate river was abandoned when official OTA came afaik, so definitely Jellybelly . Make sure you do a full wipe though, if something's wrong dirty flashing isn't worth it.

Aktifit said:
Sounds weird. But also keep in mind that there are still some apps that don't cope very well with JB, and Facebook has never been Androids best friend . But it doesn't make sense that it's only during screen on, most people report issues related to google now and apps doing **** in the background. If you want to switch ROM anyways, I suggest you use Adams Jellybelly, it's mostly stock (less features means less that can go wrong) and it includes thalamus kernel, which is IMHO the best JB kernel at the moment. I do not recommend any CM10 based ROMs if you're after stability. I assume you checked your battery stats and didn't find anything?
Edit: Chocolate river was abandoned when official OTA came afaik, so definitely Jellybelly . Make sure you do a full wipe though, if something's wrong dirty flashing isn't worth it.
Click to expand...
Click to collapse
Sounds good to me. Downloading Jellybelly now. I checked my battery stats and didn't find anywhing weird. I dont have much apps installed so there is not much that could give issues. When I leave my screen off (at night or while working) the battery life is not that bad. It's weird, but JB is still very fresh and new, so I'll just try some other roms =)

Agreed jelly belly provides the best performance, stability, and battery life
Sent from my Nexus S using Tapatalk 2

Now running JellyBelly and its much faster then my stock JB
Sent from my Nexus S using xda app-developers app

also for me battery life was improved in jb

Wouldn't agree that jellybelly provides best performance and battery. I suggest trying out cm10 v1.2
Sent from my Nexus S using xda premium

I am currently on JellyBelly and the battery life is definitely not better than stock for me. Battery drains like crazy when idling.
BUT, I do have Google Now activated. So really make sure to deactivate if you do not need it.

IMO all ROMs should give similar battery life.

Apolyxon said:
I am currently on JellyBelly and the battery life is definitely not better than stock for me. Battery drains like crazy when idling.
BUT, I do have Google Now activated. So really make sure to deactivate if you do not need it.
Click to expand...
Click to collapse
Even with Google now turned on the battery should last some time. Do You get the same time as with ICS when it's deactivated? If not, something's borked .

Even if the battery life isnthe same with Jellybelly, the performance is great!
Sent from my iPad using Tapatalk HD

after a few days weith stock jb i reach 3h45 / 4 h of screen use
with ics stock i never reached 3 h!

nexususer1 said:
Wouldn't agree that jellybelly provides best performance and battery. I suggest trying out cm10 v1.2
Sent from my Nexus S using xda premium
Click to expand...
Click to collapse
Link to v1.2?

ironia. said:
after a few days weith stock jb i reach 3h45 / 4 h of screen use
with ics stock i never reached 3 h!
Click to expand...
Click to collapse
Really? That's what I was getting that on ICS. Haha. Well that's an improvement for you!

I got 5 hours on time with jelly belly WiFi almost always on
Sent from my Nexus S using Tapatalk 2

kwibis said:
Link to v1.2?
Click to expand...
Click to collapse
https://plus.google.com/u/0/111722836277981844223/posts/C8Ykk6Fvu3t
For some reason Kalin is posting new versions of CM10 on G+ now

Battery worst on JB than ICS

Hi Guys,
I am on the Three network in UK. I recently updated my to JB and immediately noticed that the battery performance has deteriorated. I used to get nearly two full days with a 2 - 2.5 hours of screen time, 1 hour talktime and 1 hour music and little maps with GPS. I can merely a day now with the same usage. I would like to mention that the standby time was brilliant on the last update I received on ICS. Is anyone facing the same issue. I am thinking of of doing a full factory reset. Not sure if that will solve the problem. The battery graph shows that something keeps the phone awake
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I flashed the french version last night and I literally only got my S3 yesterday too and I can't really comment on the battery life compared to ICS but the battery life is way better than on my Xperia Play... Anyway I intend on trying out CM10 soon.

for me the other way around
ICS used to eat battery faster.

everything depende on how you setup and how you use your phone. it's not as simple as ICS > JB or JB > ICS

All the leaks I used, including the Polish Rom, had rubbish battery. H3G is working fine. Even better than ICS (or about the same).

Disable google now & SVoice
Sent from my GT-I9300 using Tapatalk 2

Yep getting similar battery as that screen shot... Seems to be a lot of wake locks also I have realised even with data turned off it still drains battery as if it was on... On ics with data off I would lose like 2% over night bit with jb data off I lose 10±% battery easily over night... Hoping this is fixed soon... I though jb is suppose to be more efficient than ics?
Sent from my GT-I9300 using xda app-developers app

Was wondering if there was a way to roll back to the previous firmware using Kies?
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yes pal . I am using three network and I updated my s3 from ICS to JB the battery is so bad if you compare it to ICS

Jack Barrett said:
Disable google now & SVoice
Click to expand...
Click to collapse
I know how to disable Google Now, but how to disable S-Voice on a stock (unrooted) ROM other than simply "not using it"?
Like an earlier poster, I used to get huge battery life with ICS by turning data off overnight etc, however now with JB it seems to drain much quicker.
I'm only sync'ing the minimal essential things as before, pretty much exactly the same settings, so disappointed in the battery life.
I made a point of doing a full wipe both before and after the update to be sure of starting "with a clean slate".
Some people have said that battery life should improve after a few days. Why should that be? Is it busy housekeeping its flash memory or something?

Did you try Settings->Application Manager->All->S-Voice->Disable?
Works for me.

I'm the same. Ics was much battery. I have turned everything off, disabled everything unsynced everything and batteryvstill draining at 3-4% per hour, whats the point of a smart phone if you can't use it! My battery drains pretty much the same whether the screen is on or off!

I found battery life in JB to be poor IF my wifi was connected - with wifi off or just disconnected battery life seemed to be similar to ICS. I use wifi a lot though, so for the moment I've gone back to ICS... wifi range and performance seemed to be lower in JB too for what it's worth.

Im loosing 2% overnight using foxxhound
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I get roughly 10-15% more juice out of JB with identical apps and settings.

My battery life is a lot worse on stock unrooted UK BTU JB aswell ... didnt even get 10 hrs out of it yesterday ... doing a full wipe and restore just now but its taking hours to put my apps back on ..
Didnt take this long to restore a iphone or is something wrong here ...My back up is only about 300mb and its been about 3-4 hours and still just at 50% complete ...

To be honest, that looks alright to me. 17 hours with network on all the time? And look at those wakes while the screen is off.
Post some BBS stats

cromozone said:
I found battery life in JB to be poor IF my wifi was connected - with wifi off or just disconnected battery life seemed to be similar to ICS. I use wifi a lot though, so for the moment I've gone back to ICS... wifi range and performance seemed to be lower in JB too for what it's worth.
Click to expand...
Click to collapse
How did you roll back to Stock ICS?
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My battery is the same as on ICS as on JellyBean.
I got average screen-on time of 3 hours.

samkol18 said:
How did you roll back to Stock ICS?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Odin shout do the trick
Sent from my GT-N8000 using Tapatalk 2

[Official] [N7100XXDLL7] Battery Drain Thread

Samsung recently released a software update (N7100XXDLL7) to the Galaxy Note II and this update is reported to suffer from battery drain.
*Owners of the Galaxy Note II who installed the new software update reported us about the battery drain issue.
We of SamMobile have also tested the new firmware and we can confirm that the new update indeed drains the battery much faster than previous firmwares.
The new software update (N7100XXDLL7) fixes the infamous Exynos vulnerability,”Sudden Death” issue and resetcode bug but brings battery drain.
*Samsung itself did not give any comment on this issue*yet, we expect a new update based on Android 4.1.2 before the newer Android version 4.2.1 / 4.2.2 firmwares.
If you have the same problem with your Galaxy Note II please let us know in the comments!
Source: Sammobile
If this post finds you useful please thank s

Re: [official] [n7100xxdlk7] battery drain thread
I ended up reverting back to 4.1.1 because of wifi issues and battery drain. It seems like Samsung pulled the 4.1.2 update because OTA no longer finds it. Maybe that's an indication that they're working on it, fingers crossed.
Sent from my GT-N7100 using xda app-developers app

I have battery issues. Drives me crazy. But still much better battery life than my other devices. haha.

Re: [official] [n7100xxdlk7] battery drain thread
I cannot revert back because I am one of those unlucky bastards that used to have the SDS bug.
I also encounter battery drain and honestly it's annoying. Hopefully they'll fix for it soon.
Verstuurd van mijn GT-N7100 met Tapatalk

sz1a said:
I ended up reverting back to 4.1.1 because of wifi issues and battery drain. It seems like Samsung pulled the 4.1.2 update because OTA no longer finds it. Maybe that's an indication that they're working on it, fingers crossed.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
Did they really pulled off the 4.1.2 update?
Good to know. This update was really bad. I had to do a wipe data/factory reset because even the vertical scroll was laggy.
And the battery is a lot worse.

Yes its true. I have also been having the same issue. D scrolling problem along with quite a lot of battery drain. Just bought my device a week or two back. Worked flawlessly in the first few days but with the latest update has reduced the battery life quite a lot. Hope Samsung resolves it soon.
Sent from my GT-N7100 using xda premium

Been having the same weird battery drain issues. My battery's charging rate has gone down to 10% per hour whereas it was more than double that earlier.
Now am in a dilemma as to whether go back to 4.1.1 or wait for samsung to fix their mess
Sent from my GT-N7100.
Those who help noobs go to heaven. True story.

I have no Issues after a hard reset.
I have 4.1.2 JZO54K.N7100XXDLL7 bb N7100XXDLK7 French Unbranded baseband compilation 3.031-679347 .
Previous the hard reset was a plethora of bugs also free space began to decrease with no reason until the system was close to unusable. Then I decided to do the hard reset, after that now works very stable and battery easy last all day.
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I my note 2 is not rooted, no special tweeks neither power saving enabled .
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Does your wifi stop responding after phone goes into sleep? Maybe we have different hardware because mine would do that.
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Damn, so that's what's going on. I've been going crazy at why my standby time went from 0.8% / hour to 1.6-6% / hour after the update. The drain is certainly noticeable and I hope this gets fixed soon.

is the DLL3 better than DLL7 as mine seems rock solid battery got the WanamLite running on mine

Dunno between 4.1.1 and 4.1.2 but I found ll7 better than ll5 for battery life.

I had huge idle battery drain after OTA update to 4.1.2 - about 2-3% every hour. I was loosing almost 20% battery over night with everything turned off. I did a factory reset and it seems back to normal now. It's probably a bit worse then 4.1.1 but I'm still getting 2-3 days with moderate use. Now it's draining 2% over whole night instead of 2% every hour.

I think I found out why my phone drain is so bad. It doesn't go to sleep.
I noticed this since yesterday. I woke up did a restart.. and look! It still doesn't go to sleep!
Sent from my GT-N7100

I too had the battery drain and no deep sleep, sine I have installed the note2core kernel (version 2.4 i think) and oc'd to 1.8ghz and the phone lasts days. No real need for the oc but it is stable and I have encountered no problems.
Added screen shot
This is with over 4 hours screen on time
Sent from my Nexus 7 using Tapatalk HD

i have good battery life, but the only problem is the phone always restart and shut down by itself.
anyone facing the same problem as well?
thanks.

Same here after the update battery life is terrible for me .before the update it was rock solid and use to wonder if at all does this battery ever drain .
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I switched from French DLL7 to the more recent release from the Netherlands, seems significantly better thus far.
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[Firmware] DBT update, N7100XXDMB2 2/21/13

Hello everyone I wanted to inform you that the N7100XXDMB2 OFFICIAL Update for DBT Unlocked Germany and other countries was released an hour ago (5:30 AM here in Spain).
I know it's nothing new, but here it is!
Regards,
Kent.

AW: [Firmware] DBT update, N7100XXDMB2 2/21/13
Did receive an OTA update today, but MA5 and LK7. Can't find something new. Maybe a batterylife fix.
Sent from my GT-N7100 using xda app-developers app

MB2 is quite good.
1day17hours
5hours21minutes screen time
1hour18minutes talk time
11% left

still nothing for UK BTU although it sounds like it's getting closer, hopefully, maybe, possibly
this is the first android phone that i've owned where i don't feel it necessary to root it and play around with new roms seeking improvement, however this long delay for release of UK BTU is stretching my patience, especially with the ever present threat of sds
*big sigh*

angelahp said:
still nothing for UK BTU although it sounds like it's getting closer, hopefully, maybe, possibly
this is the first android phone that i've owned where i don't feel it necessary to root it and play around with new roms seeking improvement, however this long delay for release of UK BTU is stretching my patience, especially with the ever present threat of sds
*big sigh*
Click to expand...
Click to collapse
You know you can flash MB2 without losing warranty right?
Not only is it suitable for your N7100 and recommended but also it contains the BTU csc code. Win win win.

I do Victor thank you, I keep telling myself to hold on for another day .... even though I keep looking at odin on my laptop
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Congratulations on the new firmware update and the deceased battery life
'Swyped' from my GT-N7100

So far battery has been on par with the last update, which means there is still a drain. One thing I have noticed into do a few battery pulls or restarts every time you update so I did my second and it was funny, my battery life pre restart was 95 and post start up was 97. Right now it's at 96. So I'll give it a few days before I report back on battery life. But performance wise is just great. Same as before. Snappy and good.
Sent from my GT-N7100 using Tapatalk 2

zkyevolved said:
So far battery has been on par with the last update, which means there is still a drain. One thing I have noticed into do a few battery pulls or restarts every time you update so I did my second and it was funny, my battery life pre restart was 95 and post start up was 97. Right now it's at 96. So I'll give it a few days before I report back on battery life. But performance wise is just great. Same as before. Snappy and good.
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Oh! ok.. i thought my battery was going crazy coz my note2 showed battery at 77% pre & 79% post restart . I'm on latest stock XXDMB2 (India) rom.
Another funny thing i have discovered is that if i charge the phone for a prolonged duration (i.e continue charging for about an hour after the battery is 100%) then the battery life improves significantly. It gives me as good battery backup as it was on 4.1.1. Charged it full 1 day 17 hrs back and with very light use 78% battery still remaining :victory:. With same settings and similar use it would otherwise be less than 68% remaining. Checked this twice and found the battery backup to be good if i charge it for some time beyond 100% charge. See screenshots below.

---deleted---

I gave up waiting Victor and flashed rom this morning
I'm happier knowing I'm safe, rather that than worry about small loss of battery life ... I'm never that far away from a charger and plug socket anyway
Sent from my GT-N7100 using xda premium

What's the difference between this rom and the other rom from asia? N7100XXDMB4
Is DMB4 newer than DMB2?
Thanks

O2 UK just updated my N7100 to Android Version 4.1.2 Build DMB2. Last night I pressed "Check for updates" and was queued. This morning I turned on WiFi and got it. To early for feedback but I attach some screen shots. Took about 1/2 hour.
angelahp said:
UK BTU although it sounds like it's getting closer,
Click to expand...
Click to collapse
Cheers
Tom
My Note II to you

This update is far more superior than 4.1.1,
On 4.1.1 I managed to get 5-6 hours screen time. 4.1.2 is brilliant, butter smooth, everything works, everything cool!
Sent from my GT-N7100 using xda app-developers app

butter smooth ???
galery and browser very bad pinch to zoom

R: [Firmware] DBT update, N7100XXDMB2 2/21/13
I cannot install apk files manually because the install command is not active!
What is the reason?
Thanks
Inviato dal mio GT-N7100 con Tapatalk 2

This update has ruined my battery life. It's draining much much faster than before.
Sent from my GT-N7100 using xda app-developers app

angelahp said:
still nothing for UK BTU although it sounds like it's getting closer, hopefully, maybe, possibly
this is the first android phone that i've owned where i don't feel it necessary to root it and play around with new roms seeking improvement, however this long delay for release of UK BTU is stretching my patience, especially with the ever present threat of sds
*big sigh*
Click to expand...
Click to collapse
I'm in UK with a BTU handset and a new OTA update is now available...

Reasons to update
Good reason to update your Galaxy Note II from Android 4.1.2 : Galaxy Note II vulnerability lets attackers (briefly) access home screen apps (video)
http://www.engadget.com/2013/03/04/galaxy-note-ii-homescreen-lock-vulnerability/
By the way after 24 hours I would say battery life is as good as is copy paste - if not slightly better.
Cheers
Tom

Just got this (DMB2, was on DLL4)) on Vodafone UK. Too early to have seen any differences yet though!

s2 in jb 4.1.2 battery life

hi. I am o supernexus build 5 wth siyah kernel. I got round 7 hiurs if heavy usage on gs2. I've done facebook, viber, internet using stock browser and downloading around 200mb zip file. what can you say about this battery life. its my first time to use gs2 and I am using 2000mah. the battery life seems pretty bad in my opinion. I will attach screenshot of my hardware info, battery use and screen time. hoping for any opinions out there
Sent from my GT-I9100 using xda app-developers app

I think is good , for me with stock battery (1650mah) i get 3 hours and 30-40 minutes (screen on time), wifi on , screen brightness auto
Send from my SGS2 I9100 with HassanROM and latest DorimanX 8.xx kernel

I think the battery life should be better with a 2000mah battery..
Is the battery properly callibrated??

krazy1101 said:
I think is good , for me with stock battery (1650mah) i get 3 hours and 30-40 minutes (screen on time), wifi on , screen brightness auto
Send from my SGS2 I9100 with HassanROM and latest DorimanX 8.xx kernel
Click to expand...
Click to collapse
oh really that means I should be getting better because I am on 2000mah but it seems not. Im not sure what's the problem if its the battery or the kernel. I also used an ICS firmware from Samsung I9100TDULP4. I don't know if that affects the battery life
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peRFect! said:
I think the battery life should be better with a 2000mah battery..
Is the battery properly callibrated??
Click to expand...
Click to collapse
Well I dont know if it is properly calibrated. By the way I got this unit from my uncle so I am not really sure if the battery is still good. How do we know if its still good. I dont know how old is this battery. How do we calibrate the battery and does the room affect this battery life?
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by the way I just installed this rom A week ago. The battery takes 3-4 hours to be charged using my xperia charger
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I have suggestion for you , go to miuiandroid.com and download the latest build , install Siyah Kernel v6.0b5 with that and you will love the battery timing on that (Trust me, i am using it right now)

Mr.KiLLeR said:
I have suggestion for you , go to miuiandroid.com and download the latest build , install Siyah Kernel v6.0b5 with that and you will love the battery timing on that (Trust me, i am using it right now)
Click to expand...
Click to collapse
you mean downloading the miui rom? yeah definitely I'll give it a try after slimbean which I will try if I see no improvement on the bAttery. Has anyone had 2000mah and siyah kernel with supernexus rom build 5? What are your timings?
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infinitylook said:
you mean downloading the miui rom? yeah definitely I'll give it a try after slimbean which I will try if I see no improvement on the bAttery. Has anyone had 2000mah and siyah kernel with supernexus rom build 5? What are your timings?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
I have tried Slim Bean too and after trying that i came to Miui Rom

anyone who have experience with 2000battery
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anyone who have experience with 2000battery
Sent from my GT-I9100 using xda app-developers app

right now I am using the original 1650 mah stock battery of s2. I've been doing a lot of file transfers as of this moment via e.s. file explorer and currently I am transferring almost 13gb of data via wifi from my laptop. its been awake for 4 hours now with screen time of 1 hour and 30min. e.s. file explorer is keeping the system awake for 3 hours. I did some facebook and viber chats. screen at 35% brightness.. do you think this is the expected life of the stock battery? I am fairly new to samsung and I found the battery life to be disappointing even with the stock jelly bean rom from samsung. I will post some pics of the battery stats and cpu stats from cpu spy. another thing though. is there a good app from the market where I can test my two batteries and compare them? thank you
Sent from my GT-I9100 using xda app-developers app

infinitylook said:
right now I am using the original 1650 mah stock battery of s2. I've been doing a lot of file transfers as of this moment via e.s. file explorer and currently I am transferring almost 13gb of data via wifi from my laptop. its been awake for 4 hours now with screen time of 1 hour and 30min. e.s. file explorer is keeping the system awake for 3 hours. I did some facebook and viber chats. screen at 35% brightness.. do you think this is the expected life of the stock battery? I am fairly new to samsung and I found the battery life to be disappointing even with the stock jelly bean rom from samsung. I will post some pics of the battery stats and cpu stats from cpu spy. another thing though. is there a good app from the market where I can test my two batteries and compare them? thank you
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
To callibrate battery..first completely drain the battery to about 5%, then charge the phone non stop without disturbing it till 100% and immediately remove the charger..again fully drain the battery and follow the above steps and u will get better battery life after a few cycles!
About roms..battery life does differ from rom to rom...i suggest u could check the custom kernels packed with zzmoove governor, ithat particular governor definitely improves the battery backup!
And in the above post es file explorer is eating ur battery..for that u should download greenify and hibernate apps continuously running in background!

great. I will follow your steps. one more thing. how can I know if the battery is still good or if its still holding the proper charge its suppose to have? thanks
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best I can get is about 3 days standby in jb stock.

I use the 2000mAh battery is primary battery.. no big surprise to expect here, capacity is just 21% more by construction...
With wifi on, JB burns in my case about 3% in IDLE.. stock kernel.. and about 5% in 3G mode, IDLE.. then battery drains more or less fast depending on screen on, phone calls etc. I use the phone extensively for work (email sync & replies, phone calls, sms and voip) and i have to topup the battery twice or trice a day!
Have tried various custom kernels with all sort of magic to reduce battery drain.. more or less effectively.. sometimes with less stability.
Right now trying out latest dorimanx 8.27.. seems thatn IDLE with WIFI on drains around 2% per hour.. better than stock.. still not quite awesome
I miss the GB battery life.. but JB is so beautiful in comparison, I cannot go back!

jmarcnms said:
I use the 2000mAh battery is primary battery.. no big surprise to expect here, capacity is just 21% more by construction...
With wifi on, JB burns in my case about 3% in IDLE.. stock kernel.. and about 5% in 3G mode, IDLE.. then battery drains more or less fast depending on screen on, phone calls etc. I use the phone extensively for work (email sync & replies, phone calls, sms and voip) and i have to topup the battery twice or trice a day!
Have tried various custom kernels with all sort of magic to reduce battery drain.. more or less effectively.. sometimes with less stability.
Right now trying out latest dorimanx 8.27.. seems thatn IDLE with WIFI on drains around 2% per hour.. better than stock.. still not quite awesome
I miss the GB battery life.. but JB is so beautiful in comparison, I cannot go back!
Click to expand...
Click to collapse
Does Jb stock for you has better life or does custom rom have more? I really like the custom roms but as per observation stock rom offers more battery time. Right now I just reverted to stock rom i9100xwlss. Touchwiz really sucks. Supernexus is really beautiful but offers less battery (but I will have to try yet their latest build). Also one of the reasons for going back to stock is the camera shot quality. Custom roms really have poor camera quality. I guess when it comes to lowlight shots the stock roms are best. So much for that. Does stock rom offer more battry for you or custom rom does?
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SGS2 Battery Life on 4.1.2
infinitylook said:
hi. I am o supernexus build 5 wth siyah kernel. I got round 7 hiurs if heavy usage on gs2. I've done facebook, viber, internet using stock browser and downloading around 200mb zip file. what can you say about this battery life. its my first time to use gs2 and I am using 2000mah. the battery life seems pretty bad in my opinion. I will attach screenshot of my hardware info, battery use and screen time. hoping for any opinions out there
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Below is a reply in some other forum by Samsung offcials regarding a specific method to Hard-Reboot your phone after a Firmware update: This method particularly helped me improve the battery life on SGS2 after 4.1.2 update.
"1. I’m sorry you are having issues with your device after upgrading the firmware. I can understand your frustration about this.
Old systems settings can be left on the phone after an update occurs, which is why we usually recommend a full factory reset after updating. If this isn’t done your device may begin to give false readings from system resources, or experience technical problems, which may explain the issue you are having.
We would advise on doing the following, which is designed to reset the settings on your device. Please back up your device using Samsung KIES before you do this.
1) Remove the battery for at least 40 minutes, put the battery back in and allow it to fully discharge. Afterwards, perform a full battery charge with the device turned off. Do not interrupt the charging process.
2) After the battery is fully charged, we would like you to perform a full factory reset, which can be done via Settings > Backup > Reset.
This process will reset your device, remove old system files that are no longer needed and enable your device to operate normally again.
Please let us know if your device continues to experience problems after the reset so we can investigate further.
If you require any further assistance, please contact Samsung again and we will be more than happy to help.
Kind regards,
Stewart
Online Support Team
SAMSUNG Customer Support Centre

infinitylook said:
Does Jb stock for you has better life or does custom rom have more? I really like the custom roms but as per observation stock rom offers more battery time. Right now I just reverted to stock rom i9100xwlss. Touchwiz really sucks. Supernexus is really beautiful but offers less battery (but I will have to try yet their latest build). Also one of the reasons for going back to stock is the camera shot quality. Custom roms really have poor camera quality. I guess when it comes to lowlight shots the stock roms are best. So much for that. Does stock rom offer more battry for you or custom rom does?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Actually I only use stock JB.. and trying to get it last longer with some custom kernels.. recently trying snapdragon rom, which is stock JB as well but with some S4 apk made compatible with S2... tried some time back omega, vanila rootbox and some other android builds for s2.. but was facing few stability issues / bugs and also missed some features that i was getting from stock rom.. so i gave up with these... now just aiming at stability and if possible battery endurance.. but not at the cost of stability.