Related
I've used ninphetamine 2.1.3+ and it used to drain my battery a fair bit. After having seen another user who said he was experiencing better battery life with ninphetamine 2.0.5. I flashed the older version and it turns out to be indeed better.
My idle drain rate is now 15-17mA using Battery Monitor widget.
So when put in picture. Drain rate is about 2% per hour with minimal usage. (Note 3g data was on)
Anyone else have a better kernel?
EDIT 1:
I've tried using SiyahKernel (KI3) and it seems that according to Battery Monitor widget the idle battery drain is 14-15ma. Seems to be much better. However, occasionally the touchscreen freezes and only the touch button works. But then again it could have been because I was using the KI3 kernel on a KH3 rom. Would report back after I finally get off my lazy ass and flash a KI3 rom
EDIT 2:
Got off my lazy ass finally. Flashed LeoMar 2.7.1 rom with SiyahKernel 1.7.8. Will report back after a while. Though I must say that for some reasons after the boot animation the phone turns black for quite a long time (1-4 Seconds) before the lockscreen appears. This did not happened with the default LeoMar 2.7.1 kernel. Will report back in 24 Hours.
http://forum.xda-developers.com/search.php?searchid=92694072&pp=25
Lennyz1988 said:
http://forum.xda-developers.com/search.php?searchid=92694072&pp=25
Click to expand...
Click to collapse
Thanks sherlock. I posted my findings and was asking if anyone else had better. If it the time of the month of you. Stay off this forum.
Personally I find it very difficult to make meaningful comparisons, especially at idle.
Battery Monitor Widget gives estimates and not actual current drain. See this thread for some discussion: http://forum.xda-developers.com/showthread.php?t=1056486 but basically it's either not in Samsung's battery driver or the app is not reading the information. So you are comparing estimates and the margin for error might be pretty large.
When you flash new kernels you also need to recalibrate the battery. That also affects your battery drain estimates. (I've had Battery Monitor Widget tell me my battery is going up when its unplugged, so go figure.)
Battery life at idle is affected by so many factors. Maybe your signal strength is better one day than another. Or you got more emails or did more syncing. Or one app just happen to glitch and have a very long wakelock. If you get battery drain, you should be checking your partial wakelocks with BetterBatteryStats. Did you get more partial wakelocks when you were running Nin 2.1.3? Is it the kernel's fault or did you just have a misbehaving app?
I like experimenting with different kernels too, so my point is don't expect miracles when somebody says Kernel X gives amazing battery life compared to Kernel Y. Personally I think they are all about the same at idle, and the big differences are in your settings and your usage. If you wipe your phone, don't add any Google or Exchange accounts, and don't sync or download anything, your battery will last 3 or 4 days on idle no matter what kernel you use.
Stock rooted KI3 (cf-root) is the best for battery life for me, i also have constat 3800+ quadrant score (with top of 4109 as my screenshot in leomar 2.7 rom thread).
Also i have the phone a lot, but really a lot less hot while gaming or stressing it.
KI3 stock kernel and SiyahKernel are at the moment the best in battery life. Anything else is running on older sources and drain more.
The best for me is SpeedMod! Smooth and long life battery. There is something you can't do (bootanimation oc uv bln) but simply great!
Inviato dal mio GT-I9100 usando Tapatalk
best results for me: stock kernel reflashed after rooting, for that stock rom.
Bar none the way to go.
Stock Rooted KI3 does look good, am yet to test it though
Hmm. So seems like you guys are experiencing deliciously good battery life with KI3 kernel. I shall try it and report back with some numbers.
try siyah kernel. one of the fastest growing kernels IMO
For me is Ninphetamine 2.1.3 and now i'm trying SiyahKernel 1.7.7
My question is.. between stock ki3 and SiyahKernel 1.7.7 the difference is really small (barely notice it) or big?
I tend to not flash to much kernels since the very small chance to corrupt the efs folder (even if ofc i have my backup), so if it's only small improvement, i stay on the stock ki3, if it improves a lot, i prolly try it
I've been using the siyah kernel v1.7.7 and I've been experiencing a great battery life. I didn't use the stock kernel for long to make a comparison but I sugest you give siyah at least a try, since you can always go back to stock if you don't like ir.
Updated 1st post with my new findings.
info5i2002 said:
Updated 1st post with my new findings.
Click to expand...
Click to collapse
batistaRom and ninp 2.0.5 great battery life for me...if you like i can post screenshots if anyone is using setcpu, depending on your kernel try and research in the kernel thread regarding frequencies that other users suggest and adjust yours accordingly...thats what i have done for mine and i could not be any more happier
Alright. I've finally got off my lazy ass and flashed a 2.3.5 rom (LeoMar if you must know) and am currently using siyah 1.7.8. Will report back within 24 hours after I've put the device through a day's use.
cf root KI3 stock kernel on RevolutionRom 2.7.1.
53 hours battery life 3 hours 19mins screen time wifi on 1/3 time, 4g on 2/3 time with facebook sync.
scorpion667 said:
cf root KI3 stock kernel on RevolutionRom 2.7.1.
53 hours battery life 3 hours 19mins screen time wifi on 1/3 time, 4g on 2/3 time with facebook sync.
Click to expand...
Click to collapse
Pix or it didn't happen
Hi, I posted earlier saying that siyah 1.7.7 gave me good battery life. I tried now the cf root v4.2 KI3 and I had better results. Well, I'm someone that don't play many games, but I surf a lot and download a lot of stuff on wifi. I don't care much for overclocking so I think I'm going to stay wth KI3 cf root. For me they're both great for battery life, and maybe the other ones I have not tried are great also (speedmod, ragemod, ninphetamine...)
I think what happens with kernels, and this happens also with custom ROMs (and everything really, brands, etc..) is there is a lot of fanaticism. People like to choose one ROM and kernel and stick to them. They start to defend the kernels they use convincing themselves they're the best no matter what. That is in my opinion the reason because this kind of discussion turns meaningless. Well not that meaningless, at least it gives an idea of the kernels people are using, at least we know speedmod, ragemod, siyah, nimph, are all great kernels.
I'm not criticizing anyone, in fact, I'm just another example of the people I described.
So for the past month or so, I have been noticing the Android OS bug on my i777. I tried many roms and kernels(Siyah and DD), but the battery usage was alway almost 10% per hour. My i777 is now flashed with Unnamed 2.2 + latest DDkernel, and the problem is remained. BetterBatteryStats show that "suspend" and "events/0" are big consumer of CPU power.
The bug is also described at http://forum.xda-developers.com/showthread.php?t=1290020
I don't remember that whether this bug came out in Unnamed 1.X rom.
How do I stop them from running and draining battery?
I have read and tried many ROMs and for me it appears that unnamed 1.3.2 was the answer. I am running that with Entropy's 12-08 kernel Andes is a winner for me
Sent from my SAMSUNG-SGH-I777 using Tapatalk
I also switched back to UnNamed 1.3.2, after experiencing some funky issues with 2.2.1. I'm also running Siyah 2.6.9 and I get about 1-2% per hour drain while idle on an average day.
I'm sitting here with 1 hr screen on total and 12 hours off the charge and my phone is at 62%. Others get even better battery life with more aggressive tweaks. I'm not running anything fancy either, just stock 1.3.2 and Siyah 2.6.9 on conservative with SetCPU.
Im not even going to bother with this thread. Ill let the wolves have at it...
dmm5157 said:
I also switched back to UnNamed 1.3.2, after experiencing some funky issues with 2.2.1. I'm also running Siyah 2.6.9 and I get about 1-2% per hour drain while idle on an average day.
I'm sitting here with 1 hr screen on total and 12 hours off the charge and my phone is at 62%. Others get even better battery life with more aggressive tweaks. I'm not running anything fancy either, just stock 1.3.2 and Siyah 2.6.9 on conservative with SetCPU.
Click to expand...
Click to collapse
Thanks for your reply. I just didn't pay much attention to the battery life when I used UnNamed 1.3.2.
I will feel happy enough with that "I'm sitting here with 1 hr screen on total and 12 hours off the charge and my phone is at 62%." and "1-2% per hour drain while idle on an average day"
So, I think that I have to switch back to UnNamed 1.3.2 too.
There is no good experience with Siyah kernel and UnNamed 2.2.1 combination. It mainly results from Rom?
jhermit said:
I have read and tried many ROMs and for me it appears that unnamed 1.3.2 was the answer. I am running that with Entropy's 12-08 kernel Andes is a winner for me
Sent from my SAMSUNG-SGH-I777 using Tapatalk
Click to expand...
Click to collapse
I have read many posts too. Kernel seems to be the main problem and changing kernel may be the only answer.
But, according to you and dmm5157, the ROM is the key of the bug.
I will try~
Many thanks~
I flashed my i777 with Unnamed 1.3.2 and Siyah 2.6.9 kernel. The battery life became much better, 5% per hour. But Kworker processes took most cpu. I read that it was because of kernel. So I change the kernel to Entropy's latest(02072012) and strange thing happened that Android OS bug came again.
Red5 said:
Im not even going to bother with this thread. Ill let the wolves have at it...
Click to expand...
Click to collapse
Even the wolves must sleep lol.
Sent from my SAMSUNG-SGH-I777 using xda premium
Please search before posting - you clearly didn't even bother to read the thread on known battery drainers, nor the thread on UCKK6 battery drain issues. One is currently on the very first page of this forum (no excuse for not seeing it, reading it, THEN posting after you followed the instructions in it), one is on the second page of this forum.
Thanks for your suggestion and DD kernel. I have read your post "Known identified battery drainers" this morning. Your post is mainly about how to find and analyze problem, but I think I have almost known where is the problem("suspend" and "events/0" process, just like here http://forums.hardwarezone.com.sg/s...ad]-android-os-bug-what-what-not-3428904.html) by the same way described in your post(BetterBatteryStats, CPUSpy, wakelocks...). I just want to find an answer to slove this bug.
Maybe, in your opinion, I haven't truly found where the problem is. I am a newer in XDA.
genecerebra said:
Thanks for your suggestion and DD kernel. I have read your post "Known identified battery drainers" this morning. Your post is mainly about how to find and analyze problem, but I think I have almost known where is the problem("suspend" and "events/0" process, just like here http://forums.hardwarezone.com.sg/s...ad]-android-os-bug-what-what-not-3428904.html) by the same way described in your post(BetterBatteryStats, CPUSpy, wakelocks...). I just want to find an answer to slove this bug.
Maybe, in your opinion, I haven't truly found where the problem is. I am a newer in XDA.
Click to expand...
Click to collapse
No, you don't know where the problem is. I saw your original post, recognized the symptom immediately, and immediately told you to follow the procedure to find the root cause. You didn't.
Why are you ignoring advice given to you NOW in favor of a post that is FOUR MONTHS OLD which is a copy-paste of an XDA thread from the I9100 General forums? (The original thread has been updated multiple times, as it originally had blatantly wrong information like the outdated version you linked to.)
Are we getting ICS?
1.3.2 has given me no battery life problems. Being bored now gives me problems.
ricktat said:
Are we getting ICS?
1.3.2 has given me no battery life problems. Being bored now gives me problems.
Click to expand...
Click to collapse
1.3.2 is based on UCKH7, which is not vulnerable to the widely documented bugs UCKK6 has (ALL of which are documented in my Known Battery Drainers thread.)
Hey friends I am currently running the OMEGA v28 4.1.1 JB ROM on my international GS3 i9300 and it is also rooted of course and I don't think I'm being paranoid but my battery life has took a massive drop since rooting my device. I am not overclocking mu CPU and I have tried out some rooted apps like battery saver for example and I actually think it made it worse. I have all the usual setting disabled to allow for optimal battery life like brightness right down, auto sync off, wi-fi off when the phone is locked I also only use the wi-fi manually if and when I need it and all that good stuff like smart stay and vibration off. I am wondering if anyone knows of something I'm not trying???
Had it charged to 100% this morning at 9PM and by 1PM I'm down to 79% already and I haven't made any calls and only used it to check my email and facebook for around 10 mins!!! is this normal for everyone else???
:crying::crying::crying:
Cheers
Gary
Sound normal for Sammy JB rom.
Some said Facebook is also causing the battery drains.
Sent from my GT-I9300 using xda app-developers app
Did you reset your battery stats? Charge to 100%, reset battery stats from CWM or delete batterystats.bin -file, let the battery run out.
You might want to use currentwidget to log your battery usage.
I noticed big battery drop between 4.0.4 and 4.1.1 used to get 24 hours one charge 4 hours screen time. Now I get only about 12 hours.
Might just be me :/
Sent from my GT-I9300 using xda premium
I'm using also omega rom v28, have it installed recently. I cannot say how good is the battery with this rom, but so far I have like 56% in 20h, with 2h screen, sopcast 30min, voice cals 37mins....etc (also using wifi manually when needed)
Try out different roms and find out what works for you.
You can also use an app like BetterBatteryStats to check what's draining your battery. Its just to check whats use power.
Don't use batterysaving apps most of the time they are making it worse
I'm running Omega ROM V27.2 and yes it's normal to have a difference about battery life between ICS & JB.
To improve my battery life I installed the phenomenal extreme kernel, and now I'm totally happy with it. You should take a look to its topic in the GS3 Android Development forum. The dev developed 3 versions of his kernel to fit to most of the phone.
Also as others told you, you should get BBS app to point out the wakelocks & define which app is your problem.
Personally, I'm at 45% charged, and already used it during 21h 10m including more than 2 hours screen on. My auto-sync is always on and my WiFi only when I enable it. I'm using a live wallpaper and a lot Twitter.
When I do nothing I can reach more than 2 days.
Sent from my Galaxy S3 with Omega ROM v27.2 / Phenomenal Extreme 4.0 kernel
Hallo,
I have the OMEGA v28 4.1.1 JB ROM flashed on Thuersday and i´m testing the ROM at a long time.
I use the Phenomenal4.0Medium Kernel and i must say the BatteryLife is very good. I`m working over 15 ours with him and i have 58 % on it.
My WIFI is every time on and Autosync when i use my calender and planners. For me a good app handdling battery life is "GREENPower" in Market Place.
But it´s my idea.
Here is the Link for the phenomenal kernel in xda android Galaxy S3 Deverlopment:
https://www.google.com/url?q=http:/...ds-cse&usg=AFQjCNHwKPxW1UU2a1wL7GTpnUzIaGRUxw
Greetings
sorry for my bad english
P:S Many pleasure for all german flashers
Thanks guys for the info
I will give all this a try and see how I get on. Cheers for all your input.
Gary
Thanks for the help I have installed the phenomenal kernal, hope it helps a little.
gimmick56 said:
Hallo,
I have the OMEGA v28 4.1.1 JB ROM flashed on Thuersday and i´m testing the ROM at a long time.
I use the Phenomenal4.0Medium Kernel and i must say the BatteryLife is very good. I`m working over 15 ours with him and i have 58 % on it.
My WIFI is every time on and Autosync when i use my calender and planners. For me a good app handdling battery life is "GREENPower" in Market Place.
But it´s my idea.
Here is the Link for the phenomenal kernel in xda android Galaxy S3 Deverlopment:
https://www.google.com/url?q=http:/...ds-cse&usg=AFQjCNHwKPxW1UU2a1wL7GTpnUzIaGRUxw
Greetings
sorry for my bad english
P:S Many pleasure for all german flashers
Click to expand...
Click to collapse
can try using betterbattstats to check what is causing wakelocks in your 9300
orangemanutd said:
can try using betterbattstats to check what is causing wakelocks in your 9300
Click to expand...
Click to collapse
As he recommends ...identifying and reducing your wakelocks should be your primary concern. Been reading loads from developers that the insecure jb kernels themselves should already provide good battery management.
Sywped from my GT-I9300 running Omega v28 & siyah 1.7rc1
i can't get more than 2h and 30min display and 14h stand by. I have tried perseus, siyah and speedmod kernel. Using wanamlite rom.
Sent from my GT-I9300 using Tapatalk 2
Start with a rom and minimum apps and test that .
jje
doesn't change. it's the same but everything is on: wifi sync and 4-5 accounts.
Sent from my GT-I9300 using Tapatalk 2
that is exactly why i reverted back to ICS.........JB is nice and smooth but "eats" battery quickly.........now,battery life problem on my i9300,solved
Hey guys, if you are going to use custom ROM's you should be prepared for bad battery. The developers are adding so many different features and hacking certain apps to make them work in their ROM's without a lot of investigation into what the reprecussions to battery are. I used to always use custom ROM's but haven't installed one in about 6 months and haven't any problems with battery life. I have the latest JB on my 9300 and battery life is very good. I use GSAM to watch apps that want to go rouge and start sucking battery life. Media Player Service is a big offender as is Facebook. Also stock widgets that get placed by these JB ROM's are always pinging for new data and kill battery quickly. Get rid of them! If you have a stock ROM and are getting bad battery, 99% of the time it will be bad apps, your job is to determine which ones they are and apps like betterbatterystats and GSAM work great to help diagnose the issue.
can anybody else confirm the above post? because i am not sure about the custom roms.
Sent from my GT-I9300 using Tapatalk 2
I will soon have an S3 so I cannot speak specifically about this device / ROM(s).
What I know from using a lot of Android devices and testing original ROMs vs. custom ROMs:
- original ROMs have too much garbage built-in apps and are slower
- original ROMs have everything working
- custom ROMs are much cleaner and faster
- custom ROMs have (too) much problems, something always not working 100%
- custom ROMs usually have stability & battery issues
My personal advice:
- install latest ORIGINAL ROM.
- root it
- install the free app "App Backup & Restore" from Google Play
- search unuseful apps from Samsung (& others) and block the autorun of these apps (note: do not block basic android or samsung apps, as phone, contacts, etc)
I use this method for 1.5 years and this way my Android is clean (you can save over 100-150Mb RAM), FAST and much better battery. Try it.
In the end, if original ROMs have too many original apps, custom ROMs have to many tweeks that in the end, for my taste, the original ROMs + App Backup & Restore win hands down.
zkiprov said:
can anybody else confirm the above post? because i am not sure about the custom roms.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
I have always had custom roms on all my android devices but at the moment I am running stock ics in my s3.
I don't think the S3 needs it.
To be honest I find a lot of the stock based roms full of changes I don't really need, ARHD was a great Rom but recently has started to lag really badly for me (and some other users) so I went back to stock just to see and so far I can't complain. Smooth, fast and the battery is as good if not better than the custom roms.
If the camera didn't suck so bad on AOSP I would be there in a instant
Sent from my GT-I9300 using Tapatalk 2
Hey.
I have recently become a victim of this issue. The issue is my phone becomes unreliable before 50% charge mark. It reboots at any given time as long as it is down to less than 50%. I am currently running leaked LSJ with Philz Kernel. I have bought a new battery and it is giving the same results so if anyone has any sort of suggestion please post em. I am really worried about my phone right now.
Thanks.
Taimur Akmal said:
Hey.
I have recently become a victim of this issue. The issue is my phone becomes unreliable before 50% charge mark. It reboots at any given time as long as it is down to less than 50%. I am currently running leaked LSJ with Philz Kernel. I have bought a new battery and it is giving the same results so if anyone has any sort of suggestion please post em. I am really worried about my phone right now.
Thanks.
Click to expand...
Click to collapse
As far as i know Philz Kernel has some issue. I am on stock 4.1.2 not rooted, i had battery drain issue. i did following to control the battery drain, so far 24+hrs with 3hr on display:
1. use phone till it shuts off and no battery even to poweron, then charge it to 100% (experience from ICS 4.0.4)
2. settings -> wifi -> advanced -> network notification - uncheck (came across in one of the thread in general section)
3. disabled google now and auto sync + other usual battery saving tips
hope this helps.
Time to go Stock and see if the issue remains, just for kicks to see if your dealing with a faulty chip. Then you can flash philz again.
I would flash the JB leak stock kernel and calibrate your battery with BatteryCalibration app ( that's what i did and i'm on 88 % 15 hs 45 mins)
For the draining problem you can look into this:
http://forum.xda-developers.com/showthread.php?t=2016419
try this app and follow the instructions given in this app
https://play.google.com/store/apps/details?id=com.nema.batterycalibration&hl=en
reset battery gauge
try resetting you battery fuel gage. install an ew kernel and reset uor battery meter this should solve the isse unless your battery has some discharge issues.
Taimur Akmal said:
Hey.
I have recently become a victim of this issue. The issue is my phone becomes unreliable before 50% charge mark. It reboots at any given time as long as it is down to less than 50%. I am currently running leaked LSJ with Philz Kernel. I have bought a new battery and it is giving the same results so if anyone has any sort of suggestion please post em. I am really worried about my phone right now.
Thanks.
Click to expand...
Click to collapse
Try to change your kernel
Sent from my GT-I9100 using xda premium
kilometers4 said:
Try to change your kernel
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
You cant because Siyah and Dorimanx don't support xxlsj firmware jet, just Philz for now.
EDIT: Sory for the misleading Dorimanx support it half, see this post
Do not use battery calibration app or reset furl gauge, best way I reckon is this method:
http://forum.xda-developers.com/showthread.php?t=1312273
Device: Samsung Galaxy II i9100
ROM: NeatRom Lite 4.0
Kernel: Jeboo 1.0d
Modem: LS6
I'm a guy if people are confusing me as a girl
Okay. So I am currently running shostock3 on my sgs2 with siyah kernal. I read the article from zedomax on galaxys2root.com that it has very good battery life and very stable but when i am running it, I have terrible battery life and i am currently underclocked or whatever the word is. Is there anyway to fix this?
My advice, run SHOstock3 as it was released. It runs great as shoman94 dev'd it.
...and stay away from that web site u mentioned.
Stick to XDA. Period!
Sent from my SAMSUNG-SGH-I747 using xda premium
Yes. I'm running shostock3 with the included kernel and get good battery life.
Sent from my SGH-I777 using xda premium
Getting great battery life on Shostock3 V3.0. Flashed the AJK 1.52s kernel. Checkout Better battery stats...see if you have wakelocks killing your battery. And..I agree that website is no good..stick to XDA.
Sent from my SGH-I777 using xda premium
gainstatom said:
Okay. So I am currently running shostock3 on my sgs2 with siyah kernal. I read the article from zedomax on galaxys2root.com that it has very good battery life and very stable but when i am running it, I have terrible battery life and i am currently underclocked or whatever the word is. Is there anyway to fix this?
Click to expand...
Click to collapse
which siyah kernel u r using. as far as i know theres no siyah kernel to run with shostock 3 except for ajk's (ktoonsez stopped working on siyah kernel for jb i777 after release of 4.3.3).
EQ2192012 said:
Getting great battery life on Shostock3 V3.0. Flashed the AJK 1.52s kernel. Checkout Better battery stats...see if you have wakelocks killing your battery. And..I agree that website is no good..stick to XDA.
Click to expand...
Click to collapse
Most people get really good battery life on SHOstock3. Just search the SHOstock3 thread for the word battery to see what I mean. If you're not getting good battery life, you need to find out what in your configuration is causing the problem, and fix it. There is a thread in the general section started by Entropy512 that you should study to help you identify where the problem is.
I was on GB ShoStock for a long time thinking ICS and JB would never leave me satisfied on battery life.
http://forum.xda-developers.com/showthread.php?t=1353513
Finally came to my senses and tried out ShoStock 3 and have never looked back. To make it short the best Rom Ive ever flashed for any device I have had in the present and past.
You definitely have a rogue app killing your battery, find out which one it is and uninstall.
gainstatom said:
Okay. So I am currently running shostock3 on my sgs2 with siyah kernal. I read the article from zedomax on galaxys2root.com that it has very good battery life and very stable but when i am running it, I have terrible battery life and i am currently underclocked or whatever the word is. Is there anyway to fix this?
Click to expand...
Click to collapse
Sorry you have battery life problems.
I have been running Shostock3 since it came out (it's version 3.02 today!), but I also been on and off at least five (wow can it be that many?) JB roms on my SGH-i777 (won't even mention the # GB roms here!). After trying many, I must agree with the other posters who state that this rom delivers very good battery life when compared to stock and when compared with other custom roms.
Lately, it has delivered the best battery life I have ever had on this phone using any rom (although SlimBean JB provided very very good battery life for me recently as well! Also UnNamed was great for battery life in the old GB days )
I followed the recommendations made by creepyncrawly to read Entropy's (& others) battery notes/faqs. They provide some really good background, some with that typical "XDA flavor" (read technical!. That material, plus some more plain old simple user adjustments to how and what I use on the phone have improved my phone's battery time; and it might help you as well.
It really boils down to the fact that each phone user loads different apps and our usage patterns vary.
Assume that you've flashed it and let it settle for a few days and several recharge cycles. After doing this you can see what YOUR "norms" are. They may be good or bad, but that's the baseline for you with this rom and with the apps and usage pattern you have.
(You can tweak voltage and speed (well, not speed on SS3!), but my experience has been that the more noticeable changes will be by adjusting your pattern of use, or doing the "hunt for the app" (or apps) that are burning down your run times when not in use.
Not many here seem to like or do this, but I would also try one of those "help-you-with-battery-use" apps --like juice defender (Ok, I get that many here seem to think it a waste, but it really did help me --a little-- when I used it); or get DS Battery saver (a bit more aggressive and noticeable, but you also notice the lag while you wait for things to turn on when you want them).
Actually, these may not be precision solutions, and don't focus on your specific phone app use, but they do work in a macro way to slow battery use and simply working with them for a few days or weeks will provide you with a better a sense of what the heck is going on under the plastic; they will cause you to look at what you have/run and when.
Oh, this includes using Better Battery Stats, which is fine for reporting out exactly which the apps behave --or don't-- and by how much and when. I'm not slow (well, that slow but it frankly, it took me quite a while to figure out what I was reading in the BBS readouts and what they meant! (Now, after a year+ or so of using it, I don't even have it loaded, since I've done the fiddling I need --and BBS, plus those other battery apps, helped me to figure out what apps worked well, what apps I was willing to sacrifice battery on and what apps were useless and should be tossed.)
Finally, some roms just don't work for people! So it's not worth the frustration chasing something you may not be able to achieve with this or another rom. (You probably read how individuals have problems that you don't -yet, you run the same rom and the same phone! That is our world. So, too, you will read about some who make amazing claims on how long they continue on one charge. Some are pretty amazing, and some may even be real
My final five cents would be:
#1 run the rom a couple of days, get a baseline. Then switch from Jeboo kernel to AJK's latest for TW (I think it is 1.25ss, but I really also had great results from 1.48s) and run it a few more days. They were pretty much even for me, but others find one or the other kernel makes a real difference!). Compare after doing the same activities through a charge or two.
#2 If your battery life remains "poor," note what poor really is (ex. how much screen time? and how much total run time prior to getting to zero or 10-15%? ...something like that).
#3. Then get BBS and one of the "automatic" battery-saver programs and work with it for about 4-5 days and that many recharge cycles. See what your norms are but do it for the same type of usage!!! If better while using the battery fixers, then you can work at picking off the app or apps that are sucking your battery more than you want. Not as tedious as it sounds. Of course, staying with a rom for three weeks might be a challenge :laugh:, but this is a nice rom to work with.
#4. I don't think you will need to under-volt to get good BL. I wonder if your phone is stable in doing that? Or, does it induce additional lag? That might be a high price to pay for more run time. (You could compare the UV results with your "norm" as well!)
#5. Finally, we are on Galaxy S2 Sgh-i777 -and can change batteries all day long for not so much per battery! It is not elegant, but it works. (Done it myself several times -even with good battery life).
Good Luck!
Best ROM, Good battery life... been with Shoman's ROM since shostock2 never have a problem with the battery life...
Sent from my SGH-I777 using xda premium