Develop Bugs

Why do I get horrible battery life with ROMS and Kernels?

I've used cm9 and aokp the past month and tried the stock Kernels that come with it and Franco's. One thing is for certain. No matter combination I get horrible battery life. If I run stock android with my extended battery including various Widgets I get 24 hours battery life pretty easily. Moderate usage and some heavy usage. With cm9 I'm getting maybe 15-16 hrs with aokp maybe 8-9 hers and I'm using Franco's kernel right now. I don't understand this. People talk about how much better the battery life is with various ROMS than stock but I'm not getting it. I'm getting like half the battery life I was before. Any ideas?
Sent from my Galaxy Nexus using Tapatalk 2

I can relate to you. Was in CM9 and Franko's kernel and as you said, horrible battery life. I went back to stock but this time I did not install apps thar would require services running (well I have to run WhatsApp so that's the only one running besides default abdroid services).
I am seeing better battery life this way.
The next step would be to install CM9 and restore all my apps to see if I can replicate the same battery life.
Sent from my Galaxy Nexus using Tapatalk 2

you need to find out what apps are keeping your phone from sleeping dude its not the ROM or Kernel if you want to find out you can use better battery stats or just read the permissions on your apps otherwise its probably cause your on your phone too much with the screen on first show use a usage screen shot then how many apps you have we can narrow it down

dislplin01 said:
you need to find out what apps are keeping your phone from sleeping dude its not the ROM or Kernel if you want to find out you can use better battery stats or just read the permissions on your apps otherwise its probably cause your on your phone too much with the screen on first show use a usage screen shot then how many apps you have we can narrow it down
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^This, and how much on screen time are you getting?

Ngo93 said:
^This, and how much on screen time are you getting?
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I'm getting about 1.5 hrs screen time. With stock in was getting 2-3hrs. As far as apps keeping my phone from sleeping. I'm running the same apps I run on stock android when I was getting a full day on average so not sure how they would run different because I'm on a ROM.
Sent from my Galaxy Nexus using Tapatalk 2

get better Battery stats app... And check for partial wakelocks...
I had exactly same problem... And on stock no problems
But now... Franco m4 + aokp b37
And 3 to 3.5 hours screen
Sent from my Galaxy Nexus using XDA

I used that better battery stats app and apparently there was audio something (sorry can't remember the exact words) causing partial wakelocks, read some google search results and disabled the lock screen sound in aokp and it went away, go figure?
I swear my battery life is better with the kernel that comes with AOKP rather than franco, which was a bummer since I'd just bought the franco updater app, perhaps just my imagination or maybe something just needs to be tweaked

Well, this has pretty much nothing to do with the ROMs/kernels, you flash to the device. If you use the device for heavy gaming, you use loads of apps etc. the battery life will obviously be bad, because the CPU needs the according CPU clock speed...
Underclock the CPU, or better: Get AnTuTu CPU Master pro, and set the profiles, underclock screen off, to 700 MHz, and every other proile, where you do not neccessarily need the device to that speed, not below, otherwise it will just crash... That way you have the best battery life, for your usage, so basically, every time you switch the device's screen off, it will save a hell of a load of battery

Under clocking doesn't do much for battery life contrary to popular belief. It just increases the time it takes to process a task. It might take 1s at 1.2ghz vs 1.8s at 800ghz to complete a given task for example. So yes the cpu will run at lower speed and voltage but it still also take longer to return to idle.
Sent from my GNex

dr.m0x said:
Under clocking doesn't do much for battery life contrary to popular belief. It just increases the time it takes to process a task. It might take 1s at 1.2ghz vs 1.8s at 800ghz to complete a given task for example. So yes the cpu will run at lower speed and voltage but it still also take longer to return to idle.
Sent from my GNex
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Well, I don't really mean to break this, because it is right, but not completely...
Underclocking & undervolting, when the device is not in use (Screen off) saves loads of battery...
And because it's a dual-core, it takes mostly just as long to open an app at 700 MHz, as when you're doing it at stock clock speed, or voltage or higher.. So, in that case...

familyguy59 said:
Well, this has pretty much nothing to do with the ROMs/kernels, you flash to the device. If you use the device for heavy gaming, you use loads of apps etc. the battery life will obviously be bad, because the CPU needs the according CPU clock speed...
Underclock the CPU, or better: Get AnTuTu CPU Master pro, and set the profiles, underclock screen off, to 700 MHz, and every other proile, where you do not neccessarily need the device to that speed, not below, otherwise it will just crash... That way you have the best battery life, for your usage, so basically, every time you switch the device's screen off, it will save a hell of a load of battery
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Not sure how this wouldn't have to do with the different ROMS and kernels since I stated what battery life I was getting with stock vs using a custom kernel and ROMS. I'm giving a comparison of my battery on each with the same usasge and they are different.
Sent from my Galaxy Nexus using Tapatalk 2

0kk0 said:
get better Battery stats app... And check for partial wakelocks...
I had exactly same problem... And on stock no problems
But now... Franco m4 + aokp b37
And 3 to 3.5 hours screen
Sent from my Galaxy Nexus using XDA
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Click to collapse
Thank you! I will look into this!
Sent from my Galaxy Nexus using Tapatalk 2

azlemad said:
I used that better battery stats app and apparently there was audio something (sorry can't remember the exact words) causing partial wakelocks, read some google search results and disabled the lock screen sound in aokp and it went away, go figure?
I swear my battery life is better with the kernel that comes with AOKP rather than franco, which was a bummer since I'd just bought the franco updater app, perhaps just my imagination or maybe something just needs to be tweaked
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Click to collapse
I will look into this as well! Thanks!
Sent from my Galaxy Nexus using Tapatalk 2

Okay so today I tried MIUI. The battery life blows stock android, aokp and cm9 away. I had over 3hrs of screen time today. Night and day compared to cm9 and aokp. I really don't get this.
Sent from my Galaxy Nexus using Tapatalk 2

Is stock ROM less battery drain??

Which rom is the best [for battery life] between these one??
- cyanogenmod
- miui
- stock ics
All with the ultima kernel from riyal.

xperiap said:
Which rom is the best [for battery life] between these one??
- cyanogenmod
- miui
- stock ics
All with the ultima kernel from riyal.
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For me its KA21 with Arcknight 3.3 Stock Kernel.
Really smooth, better battery than i experienced stockwise...

try ICS_anzu_KTG tuned_V1.41: governor interactiv

actually battery drain more depends on the kernels..for best battery life stock kernel is the best

Guys note that lad has Pro not Arc. Stock is usually the worst, or better - default gauge for custom ROMs. I've been watching cyanogenmod discussion for a while, usually users feedback on battery life varied from version to version; for tweaked versions can be said that battery life is the same as in stock while the performance is 20% better. I don't know about MIUI.
(Out of your question, the best for battery life are Ultima ROM and Buttermilk ROM which are optimized for battery life and battery life is notably better there; with Buttermilk and low usage you can do as much as 4 days without charging - worth for outdoor trips. Ultima ROM when idle eats like 0,6% per hour.)

Stock rom with stock kernal had the best battery life... but also lags the most.
I recomend arconium ICS with stock kernal for a balaced experiance...!!!

arpith.fbi said:
actually battery drain more depends on the kernels
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And how you use your Phone.

XperienceD said:
And how you use your Phone.
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i dint get you..

arpith.fbi said:
i dint get you..
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Well if you game a lot compared to someone who doesn't then obviously ones battery will last longer than the other, so there's a few factors that can be taken into account in regards to battery life.

XperienceD said:
Well if you game a lot compared to someone who doesn't then obviously ones battery will last longer than the other, so there's a few factors that can be taken into account in regards to battery life.
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well my method of testing battery drain(i guess everybody tests the same way) is only on standby..how much time does it take to move 1% down when the phone is not touched for an hr or 2...in exceptional cases battery will drain fast while using 3G in one kernel but lil slow on other kernel..
again my point is kernel is more responsible for battery life of the phone rather than a ROM..

arpith.fbi said:
how much time does it take to move 1% down when the phone is not touched for an hr or 2
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Then you need to take syncing into account, if yours is on and mine is off on the same kernel then yours may drian a bit quicker than mine, which goes back to my point of how a user uses their Phone. I don't think it's a black and white issue.

XperienceD said:
Then you need to take syncing into account, if yours is on and mine is off on the same kernel then yours may drian a bit quicker than mine, which goes back to my point of how a user uses their Phone. I don't think it's a black and white issue.
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yea dude.. i get it..my point was simple..people were talking about best roms for battery life.. i just said kernel plays an important role in deciding that..that was my only point..i wasnt arguing with anyone..and testing of battery drain at standby means with data off,bluetooth off, gps off..hence syncing of account wont come into picture

I'm not arguing, just trying to make a point also.

tigermess said:
(Out of your question, the best for battery life are Ultima ROM and Buttermilk ROM which are optimized for battery life and battery life is notably better there; with Buttermilk and low usage you can do as much as 4 days without charging - worth for outdoor trips. Ultima ROM when idle eats like 0,6% per hour.)
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As u can see [in my signature] im using ultima KERNEL. Is there also a ROM [for ICS}?? And is it possible to downgrade like on the iPhone??
arpith.fbi said:
well my method of testing battery drain(i guess everybody tests the same way) is only on standby..how much time does it take to move 1% down when the phone is not touched for an hr or 2...in exceptional cases battery will drain fast while using 3G in one kernel but lil slow on other kernel..
again my point is kernel is more responsible for battery life of the phone rather than a ROM..
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Click to collapse
Ok, do u think my kernel is better for battery?
Srry for these annoying questions that are thousands of but I just wanna have enough when im not at home

xperiap said:
As u can see [in my signature] im using ultima KERNEL. Is there also a ROM [for ICS}?? And is it possible to downgrade like on the iPhone??
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Yes I know and sorry, the last two ROMs I was refering to are GB. However, Riyal is working on Ultima ICS ROM and it already exists in alpha version! See this post with download link Hopefully the ROM will have similar advantages as has GB Ultima ROM over GB stock ROM, which means better battery life, better wi-fi reception, improved camera and so on.

tigermess said:
....
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Ok, and is it also possible to DOWNGRADE from ICS to GB??
I did that when I had iPhone 4.

im using cm7.2 latest release alvays, i also have an app set cpu and i set my governor to scary, min freq 145 mhz, and max 1024, and im using profiles for apps that im using most of time (underclock cpu while using that apps)
with that i have at least 40% better battery life
and, yes, u can downgrade using flashtool
LINK:
http://forum.xda-developers.com/showthread.php?t=1000012

So far Arcknight kernel has quite the reputation for good battery life. IMO, for roms i find CM9 from FreeXperia project quite awesome but then there's an issue with the battery stats and brightness for now so wait for the next release i guess. for GB try arconium 8.2. still mostly its based on kernel and also the governor.

Marchello1 said:
im using cm7.2 latest release alvays, i also have an app set cpu and i set my governor to scary, min freq 145 mhz, and max 1024, and im using profiles for apps that im using most of time (underclock cpu while using that apps)
with that i have at least 40% better battery life
and, yes, u can downgrade using flashtool
LINK:
http://forum.xda-developers.com/showthread.php?t=1000012
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Click to collapse
Hey friend, how do you do that? I dont ahve that option.
I remember i had on my other phone.
Im running the newest version. Should I change my device??

What option are you referring to?

Best ROM/Kernel combo for battery??/

I'm using the Verizon GNex running CM10 Kang with GLaDOS Kernel, and to put it simply, my battery life sucks. It drains 50% in about 2/3 hours.
How can I make it last longer???
Thanks!

arikaru0 said:
I'm using the Verizon GNex running CM10 Kang with GLaDOS Kernel, and to put it simply, my battery life sucks. It drains 50% in about 2/3 hours.
How can I make it last longer???
Thanks!
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Click to collapse
Try MincoV3 , really good battery life http://forum.xda-developers.com/showthread.php?t=1790532&page=96

Bugs_Y said:
Try MincoV3 , really good battery life http://forum.xda-developers.com/showthread.php?t=1790532&page=96
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And that's for Verizon?

paranoidandroid with trinity 307 gpu has been amazing for me

AndroidME + Trinity

I get horrendous battery life on just about every rom and kernel I try that's just a gnex I guess, that being said air kernel has significantly increased my battery life on any rom I use it on. Settings I use are 1200 max 230 min smartass2 governor and sio scheduler
Sent from my Galaxy Nexus using Tapatalk 2

I don't think that there is much difference between Custom rom and Adroid versions, I noticed that JB seems to be more of a power drain hog than ICS.. But as usual it mainly depends on your personal usage and the main drain source is (then) always the screen.
Lowering the screen brightness will have more effects than kernels and custom roms

NerdFurgison said:
I get horrendous battery life on just about every rom and kernel I try that's just a gnex I guess, that being said air kernel has significantly increased my battery life on any rom I use it on. Settings I use are 1200 max 230 min smartass2 governor and sio scheduler
Sent from my Galaxy Nexus using Tapatalk 2
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Haha me too! I have to be doing something wrong.

should try out rasbean and trinity kernel. I got about 4h 40mins screen time

There isn't one... and nobody can tell YOU what kind of battery life YOU'RE going to get. Try something and make it work for you
Sent From My Toro+ via Tapatalk

well, i've been testing, and now i have nearly 24 hours of medium use with MIUIv4 with GLaDOS kernel

liquidsmooth v2 beta 1 with trinity
Although it still has a few bugs it's really fast and smooth and I get about 15-18 hours with 2-3 hours screen on and a few apps keeping phone awake
Sent from my Galaxy Nexus

A little scared

Im a little afraid of running custom roms on my phone but i am running 4.1.2 Jedi Mind Trick and the thing im more worried about is battery. Does it make a difference?

13~BigBear~13 said:
Im a little afraid of running custom roms on my phone but i am running 4.1.2 Jedi Mind Trick and the thing im more worried about is battery. Does it make a difference?
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Battery depends on how you use it. Usually some custom ROMs can help save battery life but it has been proven by a lot of people that Touchwiz has the best battery life, but really there is a small difference since the phone averages 4 hours of screen time. :silly:

Koragg618 said:
Battery depends on how you use it. Usually some custom ROMs can help save battery life but it has been proven by a lot of people that Touchwiz has the best battery life, but really there is a small difference since the phone averages 4 hours of screen time. :silly:
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Yea I know its really good on touchwiz but havent ran a custom rom in over 5 months since my Samsung Blaze just wanting know if its even worth it in battery life.

My battery life was always best on stock 4.1.2....heavily debloated, greenified and location, sync, GPS all off...and screen kept as dim as I could use.
Sent from my Moto X cellular telephone...
---------- Post added at 09:43 AM ---------- Previous post was at 09:42 AM ----------
Lux is good to control the screen brightness.
Also I always rebooted after unplugging from charger. Otherwise I'd sometimes have problems getting deep sleep.
Sent from my Moto X cellular telephone...

Dude, if you want to just increase battery life with Jedi, I'd say find Cl3kener's last 4.1.2 Tiberius Kernel and flash that. Install TricksterMod from the play store. From Trickster change your scheduler to bfq and your governor to Ondemand. Turn minimum CPU frequency down to 192. I also turn down my GPU max frequency down to 177, and my mpdecision idle_freq to 192. You should definitely some increase in your idle battery consumption. Unfortunately there's not much to do with active battery consumption like games and video .

I used that rom for 6 months...(I stopped using it, because I started to hate touchwiz), and I didn't have any problem. It's probably going to work for you too, but just in case, take a backup. (Remember that you have to install a custom recovery)

[Q]Rom with the best battery life?

I find that the stock kitkat rom on the s4 mini has pretty poor battery life .. cannot hold up a whole working day. What rom do you recommend for improved battery life?
For my galaxy s5, I found that touchwiz roms have much better battery life than aosp roms. Is it the case for the s4 mini?

yeahman45 said:
I find that the stock kitkat rom on the s4 mini has pretty poor battery life .. cannot hold up a whole working day. What rom do you recommend for improved battery life?
For my galaxy s5, I found that touchwiz roms have much better battery life than aosp roms. Is it the case for the s4 mini?
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For me, the best battery life is by far on cm13, marshmallow. I have been on stock kitkat, cm12.1 and now cm13. Battery easly hold up to 24 hours and with less than average usage maybe 36 hours.

ok thx! will try cm13 .. I did not try it because I thought it was not stable enough
it is this rom right?: http://forum.xda-developers.com/gal...i9190-i9195-cyanogenmod-13-0-s4-mini-t3276141

yeahman45 said:
ok thx! will try cm13 .. I did not try it because I thought it was not stable enough
it is this rom right?: http://forum.xda-developers.com/galaxy-s4-mini/orig-development/gt-i9190-i9195-cyanogenmod-13-0-s4-mini-t3276141
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Yeah that's the one. :good:

for baterry life ,maybe te last nightly of cm12.1 ....and parameters of kernel :
change interactive for ondemand ,row for fiops...and underclock (if you don't use some"big games" it's useless to have all the power of the cpu)
.......or maybe the last f4k kernel with more parameters but i don't know if it work fine....

yeahman45 said:
I find that the stock kitkat rom on the s4 mini has pretty poor battery life .. cannot hold up a whole working day. What rom do you recommend for improved battery life?
For my galaxy s5, I found that touchwiz roms have much better battery life than aosp roms. Is it the case for the s4 mini?
Click to expand...
Click to collapse
The best battery life I can get with this phone is with the last stable release of CM 12.1, and with the last f4k kernel for this ROM. This kernel allows undervolting. I can use a global offset of 150mV for all the frequency without any sign of instability (I have been using this settings for months). You should also deactivate wifi, bluetooth, NFC and so on if you are not using it. Also, use the power saving mode of you phone. With these settings and an extremely low using of my phone (only sms/whatsapp), it lasts for a week. I also put it in airplane mode during the night to save battery.

cgirerd said:
The best battery life I can get with this phone is with the last stable release of CM 12.1, and with the last f4k kernel for this ROM. This kernel allows undervolting. I can use a global offset of 150mV for all the frequency without any sign of instability (I have been using this settings for months). You should also deactivate wifi, bluetooth, NFC and so on if you are not using it. Also, use the power saving mode of you phone. With these settings and an extremely low using of my phone (only sms/whatsapp), it lasts for a week. I also put it in airplane mode during the night to save battery.
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You can also power off your phone to have unlimited battery life Oh, im just kidding. With average usage on cm13 i have 4h30m sot.
Is f4k's kernel compatible with cm13? Or do we have a custom kernel for that version of cyanogenmod?

Charlie said:
You can also power off your phone to have unlimited battery life Oh, im just kidding. With average usage on cm13 i have 4h30m sot.
Is f4k's kernel compatible with cm13? Or do we have a custom kernel for that version of cyanogenmod?
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Ahah you're right. I challenged myself to get the very most out of my battery . 4h30 is not a lot though, might be due to the early stage of development of cm13.
I haven't found a custom kernel for cm13 yet. The development of this rom started something like 1 month ago, so that's a bit early I think.