Develop Bugs

Best rom and kernel for battery

Hello,
I search the best rom official or custom and the best kernel for the battery, only the battery.
Can you help me because i had only a utilisation intensive!!
Best regards

xamou711 said:
Hello,
I search the best rom official or custom and the best kernel for the battery, only the battery.
Can you help me because i had only a utilisation intensive!!
Best regards
Click to expand...
Click to collapse
at the moment i use the android revolution hd 6.0 rom with a perseus 29.1 kernel. the battery drain is 1,5%/h (betterbatterystats: 2d 42m battery 25%) and the cpu setting is stock. i will see if it change after the next charging.
i already downloaded the redpill rev1.00 kernel and i want to test it the next time.
unfortunately i've got some l2_hsic wakelocks with the perseus kernel (2h in 2 days) and will see what happens with the redpill kernel.
tenofnine

ROM and Kernel have only a small effect on battery life. The main culprits are processes that wake the phone up from deep sleep and engage the CPU or data transmittion.
When I lowered all auto-update intervals of apps from once-per-30-minutes to once-per-4 hours, my battery life nearly doubled itself.

i presume that you already disabled/lowered these "useful" things to improve your batterylife.
i don't play games on my cellphone, just some surfing and calling on viber (2-3h per day) however my battery lasts longer compared to the stock rom.

[Q] Why is Battery draining so fast on my Samsung Galaxy W (GT-I8150)?

I have upgraded my Galaxy W to Jelly Bean using Custom Room (4.2.2) Cyanogenmod 10.1 alpha 2. maybe later alpha 3.
Everything runs well. but why my phone's battery drains so fast? and please help me HOW TO SOLVE IT AND MAKE IT LAST LONG TIME???
THANKS VERY MUCH....

Backup your apps, factory reset your phone. If battery drain problem persists, install Greenify or deep Sleep battery saver from Google Play to better manage battery resources.

Lim Wee Huat said:
Backup your apps, factory reset your phone. If battery drain problem persists, install Greenify or deep Sleep battery saver from Google Play to better manage battery resources.
Click to expand...
Click to collapse
Thank you for your suggestion... I will try....

Electro Tobib Muhajir said:
Thank you for your suggestion... I will try....
Click to expand...
Click to collapse
when you just flashed the battery will definitely be shorter. Let it recharge for a few cycles before determining whether its good or bad battery life. Keep in mind however that even at full potential, the battery will not last for more than 2 days even at light usage.
if battery life is more important to you compared to "the newest OS" and whatever extra features it brings with it, then I highly recommend installing acro's CM9 RC2 (yes it is ICS) as the 2.x.x kernel is far better at battery life than 3.x.x (i'm currently testing it and I can already feel the difference! I believe I can reach 2.5 days at modest usage but I will have to update you on that after my first few discharge cycle for battery to reach potential after flashing new rom). I do, however notice a few annoyances with RC2 (not sure if its really the ROM, or the custom kernel i'm using, or Nova Launcher is to be blamed), so if it continues to bug me I may just switch back out to latest ICS =p.
If keeping with the latest JB is important for u, best thing you could do is download a custom kernel for it that supports UV(undervolting), then get IncrediControl and tune down your UV based on some voltage tables you can find in FAQ. This alone won't bring you a HUGE improvement in battery life but its definitely an observable difference. On top of UV, try to UC(underclock) your CPU to 1GHz. Most daily functions, apps and games (depending on how intensive it is) will work perfectly smooth even at 1GHz. IMO, the most important point of UCing is you will notice a very significant difference in the heat of your battery (ie backcover of your phone). Heat is generally bad for the battery (shorter life + faster draining) so UC is definitely a good thing to do =). Of course, on top of all those, get greenify and wakelock detector(WLD) from market to control your not-so-frequently-used apps. Use WLD to track down what is keeping your phone awake (hence drain more battery) and use greenify to hibernate all the not-so-frequently-used apps you have (example of things you DON'T want to greenify: whatsapp and gmail as you don't want to kill these 2 programs when you lock your screen. You want to continue receiving whatsapp messages and gmail when you locked your screen right? XD! Examples of things you SHOULD greenify: games, music player. Maybe some of the games or other apps may keep a background service active, secretly using your battery even though the last time you used it was 2 days ago!)
Finally, if your wonder is about 1-1.5 years old, chances are your battery is already bloated (perhaps you can feel your battery through the backcover of your phone even!) A bloated battery is a dangerous and short-capacity battery. Even with the best rom you may only push through a day from 100-0%. If your battery still looks fine but your phone is nearing its birthday, go ahead and do some online shopping (ebay or local equivalent, like malaysia we have Lelong.com.my) and get a battery for your phone. Its usually much cheaper than buying from telephone shops.
EDIT: Adding on to all of that, choosing a good governor+i/o scheduler combo is important as well. If our phone is similar with the S+, smartassv2+sio(i've used this, its quite smooth and battery is good) OR OnDemand+noop is thought to be very good in terms of battery life and responsiveness. Lulzactive is also very good but its not so easy to tune it so i usually would stay away from it. Do bear in mind that although the former 2 combo is good, it still highly depends on how you use your phone so there will not be a universally best governor+io combo. Both of those suggested by me are supposingly best in responsiveness as well as deepsleep battery conserving (only if the assumption that our roms work the same as the roms tested in S+, which MAY NOT be true).
TL;DR? try smartassv2+sio (u may change this using IncrediControl, get from playstore). Then if you are not satisfied with your current performance/battery life, you may continue experimenting by changing governor and i/o scheduler one at a time. If you are doing the testing, make sure to have some way to record your tests if not you will 100% be deceived by placebo!(with actual numbers you will clearly see whether your feeling is placebo or if there really is an improvement)

I'm having some seeeeerious battery issues with alpha3. With just 15 minutes screen usage in a day, battery settings says my screen used up more than 20% of the battery! This just for consulting the time and the weather.

oribunokiyuusou said:
I'm having some seeeeerious battery issues with alpha3. With just 15 minutes screen usage in a day, battery settings says my screen used up more than 20% of the battery! This just for consulting the time and the weather.
Click to expand...
Click to collapse
Sounds like your battery is bloated. Can u show me a screenshot of your battery graph and app usage?

oribunokiyuusou said:
I'm having some seeeeerious battery issues with alpha3. With just 15 minutes screen usage in a day, battery settings says my screen used up more than 20% of the battery! This just for consulting the time and the weather.
Click to expand...
Click to collapse
that 20% is not actually the 20% of the battery juice. It is 20% of whatever amount of battery is drained due to the display being ON. Like if your battery is used from 100% to 90%, then only 2% is used by the display.
I am not sure if I could explain what I mean.
EDIT: Hmmm maybe I misunderstood what you said... If that is the case, disregard.
And also my galaxy W will use all of its battery charge when the display is constantly ON for about 3-5 hours.

Actually, I've figured out what it was. It was Google Now. Chewing away at the battery without saying a word anywhere in the battery screen. I am now back to my old 3 days battery.

you need to install cpu spay from google play and you need look deep sleep time.

this reaction is typical if your coming from a stock or at least cm9.
there has been a lot of arguments about battery life of cm10 and above.
in my opinion, there really is a difference, i mean cm10+ drains battery faster.
and the reason being is of course the features there is in cm10++.
if you're after battery life, stay with stock or cm9 (for now).
but if you feel like your in with cm10+ and you don't want to go back like me, then may want to try these tricks:
1) using Titanium Backup, freeze the apps that you don't really use.
- in my phone i froze pico tts, voice search, talk back, etc. (i even froze google search )
2) i use an app called "autostarts", it can disable auto starting of app including those of the system.
- in my phone, i disabled google maps in every activity. ex. after startup, connectivity changed, wifi connected, widget updating
3) disable system settings which also contribute to battery draining.
- disable location service when your not using it
- disable automatic backup/restore
- disable haptic feedback
- disable autosync
- disable the top battery drainers when not in use (wifi, mobile data, gps, bluetooth)
- and many more just explore
4) do not use so many widgets (my home screen has 0 widget)
5) do not use live wallpaper
6) charge only using the original charger, not from other phone/brand, not from a usb port
- the best way to charge is to avoid using the phone until it's fully charged
7) finally, install only apps that you really need. just keep a backup of your not so often used apps and install only when you need them
If you think about it, everything i wrote above contradicts with the original concept of Android.
But that's life, sometimes you have to trade something in order to achieve another.
Our phone was baked as Gingerbread, now we want to make it taste like Jellybean.
We have all the ingredients, but we don't have a jelly bean pan to make the candy molds.
So we improvise, we work around, we do some shortcuts, we make alternatives, certainly it will cost something.

egagah said:
when you just flashed the battery will definitely be shorter. Let it recharge for a few cycles before determining whether its good or bad battery life. Keep in mind however that even at full potential, the battery will not last for more than 2 days even at light usage.
if battery life is more important to you compared to "the newest OS" and whatever extra features it brings with it, then I highly recommend installing acro's CM9 RC2 (yes it is ICS) as the 2.x.x kernel is far better at battery life than 3.x.x (i'm currently testing it and I can already feel the difference! I believe I can reach 2.5 days at modest usage but I will have to update you on that after my first few discharge cycle for battery to reach potential after flashing new rom). I do, however notice a few annoyances with RC2 (not sure if its really the ROM, or the custom kernel i'm using, or Nova Launcher is to be blamed), so if it continues to bug me I may just switch back out to latest ICS =p.
If keeping with the latest JB is important for u, best thing you could do is download a custom kernel for it that supports UV(undervolting), then get IncrediControl and tune down your UV based on some voltage tables you can find in FAQ. This alone won't bring you a HUGE improvement in battery life but its definitely an observable difference. On top of UV, try to UC(underclock) your CPU to 1GHz. Most daily functions, apps and games (depending on how intensive it is) will work perfectly smooth even at 1GHz. IMO, the most important point of UCing is you will notice a very significant difference in the heat of your battery (ie backcover of your phone). Heat is generally bad for the battery (shorter life + faster draining) so UC is definitely a good thing to do =). Of course, on top of all those, get greenify and wakelock detector(WLD) from market to control your not-so-frequently-used apps. Use WLD to track down what is keeping your phone awake (hence drain more battery) and use greenify to hibernate all the not-so-frequently-used apps you have (example of things you DON'T want to greenify: whatsapp and gmail as you don't want to kill these 2 programs when you lock your screen. You want to continue receiving whatsapp messages and gmail when you locked your screen right? XD! Examples of things you SHOULD greenify: games, music player. Maybe some of the games or other apps may keep a background service active, secretly using your battery even though the last time you used it was 2 days ago!)
Finally, if your wonder is about 1-1.5 years old, chances are your battery is already bloated (perhaps you can feel your battery through the backcover of your phone even!) A bloated battery is a dangerous and short-capacity battery. Even with the best rom you may only push through a day from 100-0%. If your battery still looks fine but your phone is nearing its birthday, go ahead and do some online shopping (ebay or local equivalent, like malaysia we have Lelong.com.my) and get a battery for your phone. Its usually much cheaper than buying from telephone shops.
EDIT: Adding on to all of that, choosing a good governor+i/o scheduler combo is important as well. If our phone is similar with the S+, smartassv2+sio(i've used this, its quite smooth and battery is good) OR OnDemand+noop is thought to be very good in terms of battery life and responsiveness. Lulzactive is also very good but its not so easy to tune it so i usually would stay away from it. Do bear in mind that although the former 2 combo is good, it still highly depends on how you use your phone so there will not be a universally best governor+io combo. Both of those suggested by me are supposingly best in responsiveness as well as deepsleep battery conserving (only if the assumption that our roms work the same as the roms tested in S+, which MAY NOT be true).
TL;DR? try smartassv2+sio (u may change this using IncrediControl, get from playstore). Then if you are not satisfied with your current performance/battery life, you may continue experimenting by changing governor and i/o scheduler one at a time. If you are doing the testing, make sure to have some way to record your tests if not you will 100% be deceived by placebo!(with actual numbers you will clearly see whether your feeling is placebo or if there really is an improvement)
Click to expand...
Click to collapse
thanks a lot. that's very helpful for me..

klacenas said:
this reaction is typical if your coming from a stock or at least cm9.
there has been a lot of arguments about battery life of cm10 and above.
in my opinion, there really is a difference, i mean cm10+ drains battery faster.
and the reason being is of course the features there is in cm10++.
if you're after battery life, stay with stock or cm9 (for now).
but if you feel like your in with cm10+ and you don't want to go back like me, then may want to try these tricks:
1) using Titanium Backup, freeze the apps that you don't really use.
- in my phone i froze pico tts, voice search, talk back, etc. (i even froze google search )
2) i use an app called "autostarts", it can disable auto starting of app including those of the system.
- in my phone, i disabled google maps in every activity. ex. after startup, connectivity changed, wifi connected, widget updating
3) disable system settings which also contribute to battery draining.
- disable location service when your not using it
- disable automatic backup/restore
- disable haptic feedback
- disable autosync
- disable the top battery drainers when not in use (wifi, mobile data, gps, bluetooth)
- and many more just explore
4) do not use so many widgets (my home screen has 0 widget)
5) do not use live wallpaper
6) charge only using the original charger, not from other phone/brand, not from a usb port
- the best way to charge is to avoid using the phone until it's fully charged
7) finally, install only apps that you really need. just keep a backup of your not so often used apps and install only when you need them
If you think about it, everything i wrote above contradicts with the original concept of Android.
But that's life, sometimes you have to trade something in order to achieve another.
Our phone was baked as Gingerbread, now we want to make it taste like Jellybean.
We have all the ingredients, but we don't have a jelly bean pan to make the candy molds.
So we improvise, we work around, we do some shortcuts, we make alternatives, certainly it will cost something.
Click to expand...
Click to collapse
yups...nice suggestion... thanks very much...:good::good::good:

Lim Wee Huat said:
Backup your apps, factory reset your phone. If battery drain problem persists, install Greenify or deep Sleep battery saver from Google Play to better manage battery resources.
Click to expand...
Click to collapse
THANKS...

oribunokiyuusou said:
I'm having some seeeeerious battery issues with alpha3. With just 15 minutes screen usage in a day, battery settings says my screen used up more than 20% of the battery! This just for consulting the time and the weather.
Click to expand...
Click to collapse
me too.... more than 20%, whereas my battery is in sleep screen and in the lowest brightness

Me too
Sent from my GT-I8150 using xda app-developers app

smeone here is right about cm9 rc2 i just flashed it and used a while.. battery seems to be 2x longer than 4.4 kitkat
here is there link
http://mygalaxywonder.blogspot.sg/2012/09/cyanogenmod-9-cm9-alpha-build-8-for.html

Magpir said:
smeone here is right about cm9 rc2 i just flashed it and used a while.. battery seems to be 2x longer than 4.4 kitkat
here is there link
http://mygalaxywonder.blogspot.sg/2012/09/cyanogenmod-9-cm9-alpha-build-8-for.html
Click to expand...
Click to collapse
No....no....no....
That link will redirect you to a website that has kanged Arco's hard work and NOT given due credit....
Here is the correct, original link....
http://forum.xda-developers.com/showthread.php?t=1576874
........right here on XDA...
This might be my S2, or it might be my W...but it's definitely CM

LF "Perfect Kernel" for PA rom

Hello,so what kernel you like to combine with PA? -Nexus 4
I've tryed few
Franco r203-i think is has a battery drain problem /no update till now...
Trinity-no gama controll(and that is pretty annoying for me)
faux-idk why i just dont like that kernel
matrix-ok battery but low fps in gaming(maybe im doing something wrong?)
hellscore-hmm idk how its now ....
I would love to try ElementalX but its only for N5
The "wish list"
-over 4 SOT in wi-fi(3g,bluetooth,nfc,data,gps-all OFF ,dont need them)
-has customizable color-gama
-low consumption over night
-NO low fps in games like Asphalt 8(can change pref with Per-App modes if need [low on daily apps and custom profiles for games])
Thats all
What do you recomand?A few pros/cons on the kernel.

Try hellscore b43
http://d-h.st/users/hellsgod/?fld_id=27672#files
hells-Core-b43-kk-t2.zip. Flash this file. Enjoy!
This kernel gives better battery life for any ROM. 100% results.

After a day of testing more kernel
My favorite for now are:
Trinity- 4cores on all time and combined with tkt for gamma
Hellscore b43 -its very cool ,i'm very curious how will perform over night the b44 version because the low frequency
This 2 i love the most

For what it's worth, I have no exceptional battery drain using Franco Kernel. I lose ~1% per hour with the screen off, and <0.5% per hour with the screen and radios off, which is as good as it get for this device, in my experience.
With normal usage and without disabling Location Services or radios, I tend to get 5 hours of screen-on-time; sometimes more.

So till now trinity and hellscore in 5% drain i get over 15 min of youtube playback but on franco r203 in 5% i get like 8-9
Edit:I've changed from 1,5 to 1 and now it's battery drain is much better ,like the other 2.

Lupus kernel. I was using the awful one that came with FreeXperia but that was crashing 20 times a day. Finally found Lupus and it hasn't crashed since. Battery lasts at least four times longer too which I didn't think was possible, and I haven't seen since using the stock ROM.
(Android has crashed once but that's because it's Android)

[Q] Huge battery drain whith

Hi
Recently I've installed Sultan's CM11 rom and kernel and so far the rom is much mor responsive than the stock samsung rom. Hovewer, when I use applications, my battery goes down very fast, for example if I listen to music for an hour with the Apollo music player I can lose 20% of battery. I've also noticed that when I use an app, the CPU is always at 1516 Mhz and it does not go down, thus using alot of power.
People commenting in the thread all seem to report batter battery life than other roms, but this is not the case for me.
thank you

Flash another rom then.
Or install Gsam and Gsam root companion and find out what exactly is draining you.

gab1213 said:
Hi
Recently Ive installed Sultans CM11 rom and kernel and so far the rom is much mor responsive than the stock samsung rom. Hovewer, when I use applications, my battery goes down very fast, for example if I listen to music for an hour with the Apollo music player I can lose 20% of battery. Ive also noticed that when I use an app, the CPU is always at 1516 Mhz and it does not go down, thus using alot of power.
People commenting in the thread all seem to report batter battery life than other roms, but this is not the case for me.
thank you
Click to expand...
Click to collapse
Did you flash the kernel update that was in the OP?

jrc2 said:
Did you flash the kernel update that was in the OP?
Click to expand...
Click to collapse
Yes I've just done that today and the problem no longer seems to be there anymore

Upgraded to Android 10, garbage battery life

Hi,
I flashed stock android 10 image after it was released a few days ago and the battery life is GARBAGE. Any ideas on how to fix this? I know adaptive means it should get better after a few days, but I don't really see this.

Battery life for me is pretty horrible, I can't get 2 hours of screen time doing simple things like taking photos, reading the news and email and some book reading. I don't even play games, I would say processing of HDR photos is the most intense thing I've done. I updated on Tuesday and battery life has not improved.

I had the same terrible battery experience with android 10 stock until I changed kernels. Assuming you are rooted, you can install Ex Kernel Manager, then go to the ElementalX tab and click to check for update and it will give you the option to download and flash Elemental X v. 5.05 for pixel xl android 10. It will flash the new kernel for you and then ask if you would like to reboot. Once you reboot you can change governors and many kernel settings. Currently I am at 54% with over 3hrs screen on time and average about 15 hours per charge with 6 or more hours screen on time. This is at least double what I was getting on the stock kernel.

matrix0027 said:
I had the same terrible battery experience with android 10 stock until I changed kernels. Assuming you are rooted, you can install Ex Kernel Manager, then go to the ElementalX tab and click to check for update and it will give you the option to download and flash Elemental X v. 5.05 for pixel xl android 10. It will flash the new kernel for you and then ask if you would like to reboot. Once you reboot you can change governors and many kernel settings. Currently I am at 54% with over 3hrs screen on time and average about 15 hours per charge with 6 or more hours screen on time. This is at least double what I was getting on the stock kernel.
Click to expand...
Click to collapse
Is there a free alternative to ex kernel manager?

@H0wdy
Smart pack kernel manager available on xda here it is also frequently updated not my work just so you know
https://forum.xda-developers.com/android/apps-games/app-smartpack-kernel-manager-t3854717/amp/

[email protected] said:
@H0wdy
Smart pack kernel manager available on xda here it is also frequently updated not my work just so you know
https://forum.xda-developers.com/android/apps-games/app-smartpack-kernel-manager-t3854717/amp/
Click to expand...
Click to collapse
I installed it and changed cpu governor to power saving. No difference.

H0wdy said:
I installed it and changed cpu governor to power saving. No difference.
Click to expand...
Click to collapse
Actually, even if I do apply on boot, is resetting governor to sched. Hmm

I don't see a real battery difference switching to powersave, just a performance difference.
I didn't actually switch the kernel, though. That's with the included kernel.
The battery life really is awful. Any ideas?

Changed to Elemental.
Set governors to Elemental.
NO improvement in battery.

H0wdy said:
Changed to Elemental.
Set governors to Elemental.
NO improvement in battery.
Click to expand...
Click to collapse
here are my settings on Elemental. *note under cpu, I have to manually disable perfd after every reboot as the setting doesn't stick but everything else where the apply on reboot is highlighted works automatically. Battery is noticibly better with perfd and core control disabled.

smoka206 said:
Battery life for me is pretty horrible, I can't get 2 hours of screen time doing simple things like taking photos, reading the news and email and some book reading. I don't even play games, I would say processing of HDR photos is the most intense thing I've done. I updated on Tuesday and battery life has not improved.
Click to expand...
Click to collapse
That's awesome! but, does it have significant impact on performance compared to stock kernel? I'd like to balance out performance and battery life.

I wiped the phone and installed 10.
No improvement with battery.
Also, now I have the problem of my messaging and email apps don't update unless I manually open them. and sensor seems to be messed up to where if you tap twice on phone, you don't see clock, and picking up phone doesn't show notifications, despite these options being turned on. I know there is a bug on this.

For what it's worth, I was on the Q betas, and battery life was similar to what I was getting on pie. Then once the official update installed, battery went to garbage even after several days. I ended up downgrading to Oreo leaving the bootloader unlocked, but installing elemental x kernel so that I'd still pass safety net. I had heard before that Oreo had better battery life than pie.
Things improved after that, but I know that a downgrade like this won't be an option for most people.
Edit: also should mention that I've underclocked the CPU using the installer for the ex kernel which has also given me a slight boost in battery life. Don't really notice any performance difference for my usage.

where to dowload elemental 5.05 .img ? i can only get the .zip file but i have no way to flash it.
i have root

hfmls said:
where to dowload elemental 5.05 .img ? i can only get the .zip file but i have no way to flash it.
i have root
Click to expand...
Click to collapse
I used ex kernel manager to flash it and then rebooted but it's a paid app. for a free app you could try flashify which is an app that can flash kernels and recoveries. I haven't used it in a long time to flash a kernel so I make no guarantees but it has worked well for me in the past.

How much did you underclock? I went back to 8.1 and battery life is much improved.

Stock seems fine to me 6hr sot on lte off charger for 17 hr. But did replace battery a year ago

mbiscuits said:
How much did you underclock? I went back to 8.1 and battery life is much improved.
Click to expand...
Click to collapse
Hey, I assume you're asking me. I underclocked to 1440 for the small cores (down from 1593), and 1900 for the big cores (down from stock 2150). The aroma installer has a few values to choose from, so you can try experimenting a bit. The values I used represent about a 10% drop from stock speeds.

NZedPred said:
Hey, I assume you're asking me. I underclocked to 1440 for the small cores (down from 1593), and 1900 for the big cores (down from stock 2150). The aroma installer has a few values to choose from, so you can try experimenting a bit. The values I used represent about a 10% drop from stock speeds.
Click to expand...
Click to collapse
Yes I was asking you, sorry for some reason it didn't reply to your comment. Thank you, I'm going to experiment and see how it goes. Are you doing anything else to improve battery life?

mbiscuits said:
Yes I was asking you, sorry for some reason it didn't reply to your comment. Thank you, I'm going to experiment and see how it goes. Are you doing anything else to improve battery life?
Click to expand...
Click to collapse
The biggest battery drain I have is keeping WiFi on. So I created some tasker profiles to turn off WiFi 2 minutes after the screen goes off, and back on when the screen goes on. It also only turns off if it's not plugged in. Still not perfect, but works well enough for me.