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Battery life on custom roms

Ok, I have been flashing for a few months trying to optimize my phone. My last rom was serendipity 6.2, with sp 59 and jl2. I restored to stock (bc I wanted to try something else and hadn't done that in a few weeks) my battery life on serendipity was atrocious.. 6 hours with medium usage. (hardly any calls or messages, looking things up or reading xda briefly) . I spent today on stock, after about 20 hours of light usage I am at 60% left. Now I did flash with a full battery serendipity, wiped battery stats and cleared cache and after several charge cycles and a few days battery life was still awful. I was about to get a new battery. Now I don't mean to single out serendipity, I've had bad battery life on paragon, dilli, and a few others (this time it just got unbearably bad), but why should battery life be so bad on custom roms? Am I alone on this? I hesitate to flash again bc I'm loving having a phone that won't die if I touch it, but I miss the functionality of the device with a custom 2.2.1 on it. Advice or opinions please.
Sent from my SAMSUNG-SGH-I897 using XDA App

I'm having the same problem. Everybody keeps saying they've got excellent battery life and what not with custom roms but mine doesn't seem so good. Wifi is off, I've wiped battery stats, I've used the rom for several days letting everything get situated before I begin thinking about if its good battery life or not. Maybe I'm just expecting too much or I watch my battery a lil bit too much, idk it just seems pretty bad. If I stay on the internet for 20 minutes I've already dropped about 3%
Sent from my SAMSUNG-SGH-I897 using XDA App

The normal Batt live on this phone with normal use is between 12 to 16 hours

I'm thinking part of it may be psychological and part may be usage.
Psychological in the sense that I have an expectation of an improvement, practical in that with my stock rom I haven't reinstalled certain apps like xda and pulse where I spend a lot of time reading and thus using the screen.
That being said I was still experiencing drains of 8% or more per hour when the phone was idle, wifi and gps off.
There is a way to check the cpu's time in each state, but I can't remember where the file is. If someone can, please let me know. I'm curious if under the custom rom my phone wasn't properly scaling down.
I'll probably flash something new tomorrow morning unless I see something shiny and new in the dev forum.
Sent from my SAMSUNG-SGH-I897 using XDA App

So 6 hours seems a bit low then? Could it just be a cumulative effect of flashing rom on top of rom with restoring to stock?
Sent from my SAMSUNG-SGH-I897 using XDA App

eccezarathustra said:
So 6 hours seems a bit low then? Could it just be a cumulative effect of flashing rom on top of rom with restoring to stock?
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Yeah 6 hrs does seem a bit low. There are many things that can contribute to it. If you are bouncing between H and 3g on a custom rom will drain it like crazy, I had to disable H and stick with 3g and that helped. could also look at OS monitor to find what is running in the background.

Ok, I did notice that recently I was jumping between h and 3g. I was experimenting with some of the new modems. Should I try finding a better modem for my location?
Sent from my SAMSUNG-SGH-I897 using XDA App

eccezarathustra said:
Ok, I did notice that recently I was jumping between h and 3g. I was experimenting with some of the new modems. Should I try finding a better modem for my location?
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
I would try others, as well as disable H in the hidden menus, and see how it fairs

@ zelendel.... so by H i assume you mean data... i see alot of back and forth when data is on. i know when data is off i'm still using wcdma from the gsm status, but it doesn't show the 3g icon.
i need my data because i'm from the states but living in australia and alot of my comunications are thru email/facebook.
when i look at battery usage i see rarely more than 5% from cell....usually 90 something from display ( i fiddle with it alot).
can't expect too much cause it's a powerhouse with a tiny battery........
for me the big Q at present is... can we top up the charge regularly or is it always best to let a full cycle run? if i knew it was fine to keep it topped i'd stay 50%+ most of the time i think................

It is not great to keep it topped off. The lithium battery will wear out faster and lose charging capacity over time. this process is sped up the more time the battery spends at a high charge
Sent from my SAMSUNG-SGH-I897 using XDA App

Visit the Samsung web site and read the battery specs for the Captivate. The stock battery is only rated for 5 hours and 50 minutes of active phone use (which means the display is active). In sleep mode (display and other features of the phone are shutdown) the battery is rated for up to 300 hours (12.5 days).
I have NEVER seen a stock Captivate last for over 3 days in sleep mode. As for active phone use (display is active) my experience with several of the custom ROMS (Cognition, Paragon, Andromeda, and now my favorite, Continuum) is that the battery life is either on par with the stock ROM, or exceeds it. The kernels on some of these custom ROMs are more efficient than that of the stock ROM due to the many tweaks and cleaning up of bloated apps and code by the developer.
I can't bring myself to keep a stock ROM now that I have used some excellent custom ROMs like those I name above.
As for flashing custom ROMs and seeing fast battery drain goes... I have had that experience with those I listed, but usually I was able to resolve the issue by ensuring my battery was at 100% (meaning showing that amount both on and off) and reflashing, or finding the cause of the high battery usage and going from there (e.g. I have had to reflash modems). Another thing I do, mainly out of habit from compiling code and deploying it in dev and test environments, is to make sure that I am working from a known good baseline ROM before flashing a custom ROM. In this case I always return to the stock ROM you can flash through Odin One Click. That way if you have battery problems after flashing a custom ROM you can have a good idea as to what is causing those problems. This is, of course, just a matter of personal preference. Some have repeatedly flashed one custom ROM over another with no issues. YMMV

fractaline said:
@ zelendel.... so by H i assume you mean data... i see alot of back and forth when data is on. i know when data is off i'm still using wcdma from the gsm status, but it doesn't show the 3g icon.
i need my data because i'm from the states but living in australia and alot of my comunications are thru email/facebook.
when i look at battery usage i see rarely more than 5% from cell....usually 90 something from display ( i fiddle with it alot).
can't expect too much cause it's a powerhouse with a tiny battery........
for me the big Q at present is... can we top up the charge regularly or is it always best to let a full cycle run? if i knew it was fine to keep it topped i'd stay 50%+ most of the time i think................
Click to expand...
Click to collapse
No what I mean is disable HSDPA I think is the term lol. Sense you go back and forth I would say to disable that and just use 3g only.

If you don't know the code to get too the menu download sgstools it has the hidden menu keys.

Sorry but where can I find the hidden menus?
Sent from my SAMSUNG-SGH-I897 using XDA App
EDIT: just saw the last post thanks

I am the opposite, I got horrible battery on stock. Could not even make it through my work day without it dying on my way home unless I charged it midday. Now I am running Serendipity 6.2 and unplug at 7:30am and it is now 8:30pm my time and I have 30% remaining....
I have also tried other customs roms with noticeable improvements in battery life over stock but for me Serendipity gives me the best performance and battery.
Sent from my Galaxy S Captivate with Serendipity

try apex5.1 room with tl3 modem comb
i used about 50 phone call, 2 hour websurfing, email sending, checking.
i still have 41% left, 1day 10hour 50 min.

Could I have a faulty battery? I rooted and rommed cuz of my battery life being terrible but It still is bad
Sent from my SAMSUNG-SGH-I897 using XDA App

I had the exact same issue as you. I tried Darky's 9.3 first, then Serendipity 6.2, then Cognition 4.2.1. Each had major battery drain, meaning 6-8 hours with moderate use, and even without any usage it would drain 25% over 3 hours.
Use One-Click to flash back to stock JF6, then immediate do a Master Clear from the One-Click program after it has finished booting. Obviously move everything to an external SD or the computer prior to all of this, and make sure the external SD and SIM are out when flashing.
My battery has lasted for 14 hours today, and I'm only down to 54%. This is with about 1hr 20min screen on, ~30min voice calls, and always connected via 3G/H with background sync on, weather widget, and moderate web browsing.
Current setup: Serendipity 6.2, Speedmod K13C, JK4 Modem

Trying again
I couldnt keep myself away from custom roms, how i missed tethering, the custom theming, non marketplace apps and so much more...
Im trying Dilli's 7.1.1, bump charging at the moment...
Last night I drained my battery to 5% when i finally fell asleep... 6 hours later it was at 4%. Finally it drained and would not power on at all. Not even the backlights. Plugged it in for an hour and thought to take the sim card out so i would have a phone for the hours it would take to charge. When i plugged it back in the phone jumped from approximately 10% to 40% charged...
Oh well.

I have also been bouncing around flashing diff roms like crazy. I have to say though, I am using Continuum v4 with Hardcores speedmod Kernel K13D. I have been doing pretty good on this combo. Lasts for most the day with normal use.

[Q] Best ROM for battery life?

I get horrible battery life with nearly every ROM Ive used on my Sensation, sometimes drains 10 percent an hour with the screen OFF. I have all data off, no wifi on, no apps running, juicedefender ultimate, and underclock when screen is off, and I read about people who can get a full day while using the total potential of the device. I had the same problem on my old device, so I returned it to T-Mobile and still have problems on the device I got in return. I dont expect to get two days on battery, I just find it crazy that I can barely use my device without the battery draining rapidly. I've considered undervolting but every rom ive downloaded didnt support it, so I was curious if you guys know of any efficient ROMs that save a ton of power and can be undervolted. I'm not very experienced with this kind of stuff and every ROM ive used has been poor on battery life, so help would be appreciated.

I am using InsertCoin ROM and it is running fine.

I used to have a 3% battery drop per every hour the phone was sleeping on stock rom and ARHD ics. Then I tried Virtuous Inquisition and it fixed the issue. Be sure to install the rom with its appropriate radio.
Sent from my HTC Sensation Z710e using XDA App

ICS isn't fully stable yet, but seriously.. give that a try. My battery has doubled its lifespan. I have NO idea what htc/google did, but I get about 12 hours moderate usage and still around 50%. Getting 12 hours back then was what I was hoping I could hit! Now it lasts beyond my expectations
I've also read that you tried undervolting and everything. I just stayed stock and it's great, no effort! no custom kernel, OC/UC , it's amazing. If you read through the threads, I'm not the only one experiencing awesome battery
If you must know, I'm using InsertCoin but I think ARHD and all the other ICS roms will pretty much solve your problem

Thaxtonator said:
I get horrible battery life with nearly every ROM Ive used on my Sensation, sometimes drains 10 percent an hour with the screen OFF. I have all data off, no wifi on, no apps running, juicedefender ultimate, and underclock when screen is off, and I read about people who can get a full day while using the total potential of the device. I had the same problem on my old device, so I returned it to T-Mobile and still have problems on the device I got in return. I dont expect to get two days on battery, I just find it crazy that I can barely use my device without the battery draining rapidly. I've considered undervolting but every rom ive downloaded didnt support it, so I was curious if you guys know of any efficient ROMs that save a ton of power and can be undervolted. I'm not very experienced with this kind of stuff and every ROM ive used has been poor on battery life, so help would be appreciated.
Click to expand...
Click to collapse
im still using stock rom. it using 1% nearly 3-4 hours when its in sleeping
Sent from my HTC Sensation 4G using XDA App

Ok thanks guys ill try various ICS roms over the next week and see if there's a difference.

Is anyone else getting massive battery drain?

Since I upgraded tp 4.0.4 my battery life has been completely terrible (nexus s GSM, stock, latest glados kernel) even though I don't use it the entire day, it drains over half in about 4 hours. Anyone have any idea what I can do to fix this? It was perfectly fine before the update and would last days if I didn't use it, and about 12 hours if I did. Right now it's just unusable.

BetterBatteryStats and/or a fresh install (data/factory reset, format /system, optionally format /boot, install ROM).

HosainH said:
Since I upgraded tp 4.0.4 my battery life has been completely terrible (nexus s GSM, stock, latest glados kernel) even though I don't use it the entire day, it drains over half in about 4 hours. Anyone have any idea what I can do to fix this? It was perfectly fine before the update and would last days if I didn't use it, and about 12 hours if I did. Right now it's just unusable.
Click to expand...
Click to collapse
Are you using a custom ROM?
I've had the same problem when I was in stock 4.0.3, which is why I decided to root my phone and resort to custom ROM's and kernels. Now my phone is doing ok in the battery department and is also much more snappier and smoother. Oh and most custom ROM's are already using 4.0.4 anyway.
Let's try and be scientific about your problem, here are some things you may want to try out first to improve battery life:
turn off wifi when not in use
turn off automatic syncing if you don't need it
set your network mode to 2G only if you're not using the internet
turn off mobile data when not browsing/using the internet
install the watchdog lite app/widget from the Google Play store so you can monitor rogue apps that are sucking up juice
do not set your screen brightness to AUTO, but manually adjust it when you need to. you can do this either in the settings menu or thru the power control widget
This are the things I can think of off the top of my head. If this doesn't improve your battery life, even just a bit, you may have no choice but to resort to drastic measures....and go to the dark side.
Hope this helps! Cheers!

mine is okay
Batt I think it quite good on 4.0.4. I can get about 23hrs of usage. Some wifi, some 3g (fb, whatsapp, updating apps, email), some music. Stock ICS.

I had this issue after stock 4.0.4 update from 4.0.3.
I found mediaserver using more battery than it should, so I;
1) Copied all files and folders from /sdcard to PC
2) Re-format /sdcard
3) Re-store all files and folders back to /sdcard
Mediaserver process is now minimal and battery is good again

Ok thanks for the suggestions guys, reformatting my phone would be alot of effort on my part due to how much time I spent setting it up so I would like to use that as a last resort.
I installed battery stats but I can't decipher what it's saying so if someone would be as kind to explain? I took screenshots of everything in an album and I would really appreciate it if someone had a look in the album below.
http://imgur.com/a/RAtmF

Well for one, you have chunks of bad signal(red bars). That right there can kill a battery quickly. The other stuff you may be better off saving the dump file and posting it as an attachment over at the BBS thread. The guys over there are pretty informative and may be able to give you more stuff to look at to help you out.

The red bars are when I was using the underground, the battery drains just as fast overnight. I will look for that thread, thanks.
Edit: I do not stay on the underground overnight, and I have a good signal in my apartment (you can see it's fine when I arrive)

HosainH said:
The red bars are when I was using the underground, the battery drains just as fast overnight. I will look for that thread, thanks.
Click to expand...
Click to collapse
yep...a weak network signal will drain your battery a lot faster. if you're not using it to text, call or surf, or if you're just going to play games, might as well go airplane mode for a while, or at least until you get above ground where the signal is stronger.

After a good couple of hours not using the phone in a good signal area create a log and post it. Preferably get the hours just after charging.

Harbb said:
After a good couple of hours not using the phone in a good signal area create a log and post it. Preferably get the hours just after charging.
Click to expand...
Click to collapse
ok will do.
Edit: should mention I just remembered I had it on airplane mode overnight once and it still drained.

Ok here is the dump file:
http://dl.dropbox.com/u/14208458/BetterBatteryStats-2012-05-03_062227218.txt

Ok nevermind just did a reformat new rom etc.

Sorry guys, but after reinstalling I am STILL getting the battery drain issue.. Was a clean install but reinstalled all my old apps and settings. from full to 28% in 5 hours with very little usage.
http://dl.dropbox.com/u/14208458/BetterBatteryStats-2012-05-05_014902302.txt
Please someone take a look!!!

I'll have a good look tomorrow with some suggestions. Had a fair bit on the last couple days with minimal internet access.

What ROM and Kernel are you using right now?
There are a couple of interesting details there but nothing that i can point out that will take you from 100% -> 30% in that time.
Some things to test:
-Turn phone off (noting charge), remove battery, replace battery, leave phone off overnight and turn it on in the morning, again noting the new charge
-Keep data off and see if battery is still draining / Airplane mode
-Uninstall half of your apps and see if it still happens. If not, add half of the apps you uninstalled. If so, uninstall half of the apps you have left, and so on.
-Do a clean install and try for 2 - 3 days, see if it still happens (preferably a stock ROM, preferably from fastboot images)
-Attempt going back to Gingerbread and try for 2 - 3 days (preferably a stock ROM, preferably from fastboot images)
These steps can (and should) be done pretty much in order and will rule out ALOT of possible reasons and give possible solutions some merit. Let me know how this goes.

Harbb said:
What ROM and Kernel are you using right now?
There are a couple of interesting details there but nothing that i can point out that will take you from 100% -> 30% in that time.
Some things to test:
-Turn phone off (noting charge), remove battery, replace battery, leave phone off overnight and turn it on in the morning, again noting the new charge
-Keep data off and see if battery is still draining / Airplane mode
-Uninstall half of your apps and see if it still happens. If not, add half of the apps you uninstalled. If so, uninstall half of the apps you have left, and so on.
-Do a clean install and try for 2 - 3 days, see if it still happens (preferably a stock ROM, preferably from fastboot images)
-Attempt going back to Gingerbread and try for 2 - 3 days (preferably a stock ROM, preferably from fastboot images)
These steps can (and should) be done pretty much in order and will rule out ALOT of possible reasons and give possible solutions some merit. Let me know how this goes.
Click to expand...
Click to collapse
Using latest stable cyanogenmod + tried glados and netarchy and matrix kernels, all the same result. Will try what you said, also I bought a replacement battery to see if the actual battery is faulty (weird because it used to be fine). As for the airplane mode thing I already tried that, to no avail.
edit: should add that was using stock 4.0.4 before cyanogenmod.

heavy battery drain and mobile heating up since last evening

Hi,
I was running MIUIXperience V5 and everything was fine till got a random reboot last evening and after that, battery started draining very fast doing nothing 20-25% in an hour. Mobile is heating up a lot now back side near camera and charging also became very slow (30-40% in 4 hours). Tried full wipe and reinstalling the ROM but still the same issue, wiped battery stats as well.
I was getting 25-35 hrs before this so doesn't look like a fault in battery. Any help will be highly appreciated. Thanks.

Seems a hardware issue to me. Maybe try to swamp battery's and see if the current one you're using is busted.

DeuXGod said:
Seems a hardware issue to me. Maybe try to swamp battery's and see if the current one you're using is busted.
Click to expand...
Click to collapse
Thanks for your help but I still doubt the battery as when charging in powered off, it charge well & quickly as before

Can you try another ROM? If it would work ok with another ROM that would put the hardware suspicion aside. If it still keeps the same with a different ROM, then it's most definitively a hardware issue.

DeuXGod said:
Can you try another ROM? If it would work ok with another ROM that would put the hardware suspicion aside. If it still keeps the same with a different ROM, then it's most definitively a hardware issue.
Click to expand...
Click to collapse
I have tried another ROM and same ROM with clean install, they seem good as before the issue but as soon as I enable root permissions, battery started to drain fast again (35% in an hour)

got a similar issue with mine, usually my battery stills 20hrs, and that's ok for my usage, I'm running brainmaster cm9, but same with CDA 2.0.0, randomly the phone, in some case after a reboot or disconnecting power cable, start to drain battery and become hot, in battery usage stats AndroidOS is the main issue and android.process.acore the resource that never sleep,
I think this can came from a bad deep idle management on some rom-kernels combo or ics 4.0.4 issue, but I nobody to say this...

stremax said:
got a similar issue with mine, usually my battery stills 20hrs, and that's ok for my usage, I'm running brainmaster cm9, but same with CDA 2.0.0, randomly the phone, in some case after a reboot or disconnecting power cable, start to drain battery and become hot, in battery usage stats AndroidOS is the main issue and android.process.acore the resource that never sleep,
I think this can came from a bad deep idle management on some rom-kernels combo or ics 4.0.4 issue, but I nobody to say this...
Click to expand...
Click to collapse
I tried different MIUI Roms but issue remained same. Then I installed Androxide after full wipe and now seems to be working fine (72% after 7hrs). Still can't figure out what is the issue that different variants of MIUI Roms after clean install and battery starts to discharge heavily.
Tried going back to MIUI but probelm came again and after restoring to Androxide, again working fine

moodi_ali said:
I tried different MIUI Roms but issue remained same. Then I installed Androxide after full wipe and now seems to be working fine (72% after 7hrs). Still can't figure out what is the issue that different variants of MIUI Roms after clean install and battery starts to discharge heavily.
Tried going back to MIUI but probelm came again and after restoring to Androxide, again working fine
Click to expand...
Click to collapse
I suggest to install an app like Quick System Info anche see id there is a process running high on CPU usage: there you can see its log and try to understand what's happening...
BTW, I started to have some massive drain with the last CM9 nightlies: it was the Phone app that sucked all the juice in a few hours.
I wiped & reflashed dozen of times, checking if the drain was caused by some app, until I used Quick System Info and saw from the logs that the problem was the new 2g/3g toggle widget: I had set it to "3g preferred" but this caused a loop. Setting it to "2g only"/"3g only" fixed the issue.

First, MIUI is a Chinese ROM.
Second, Chinese things are always known for bad quality.
So MIUI is bad

Really, dude? Maybe you should take the tin foil hat off.

Battery Life on Infuse: Gingerbread vs Ice Cream Sandwich

Hi, so I recently got an Infuse from someone that is still on Froyo and I figure I might as well upgrade to a custom rom.
Since I care about battery life the most, I figure I would ask which version of Android provides the best battery life for the Samsung Infuse: Gingerbread or Ice Cream Sandwich.
I probably won't be running apps that fetch/push for data a whole lot, which obviously helps the battery life. But I thought I'd ask to get someone's opinion on this specific phone and a comparison between Gingerbread vs ICS before picking a rom.

And the winner is... Gingerbread!
Sent from my sweet & buttery Infuse

abc617 said:
Hi, so I recently got an Infuse from someone that is still on Froyo and I figure I might as well upgrade to a custom rom.
Since I care about battery life the most, I figure I would ask which version of Android provides the best battery life for the Samsung Infuse: Gingerbread or Ice Cream Sandwich.
I probably won't be running apps that fetch/push for data a whole lot, which obviously helps the battery life. But I thought I'd ask to get someone's opinion on this specific phone and a comparison between Gingerbread vs ICS before picking a rom.
Click to expand...
Click to collapse
Gingerbread is a better battery saver. Although i get decent battery on ics and jellybean. I know i perfer all that ics/jb has to offer in features over having battery life. But for what your asking id suggest AEON or the stock gb. Aeon is very stable and has some cool extras without much battery drain
Sent from my SGH-I997 using xda app-developers app

andros11 said:
And the winner is... Gingerbread!
Click to expand...
Click to collapse
Really? I got faaar better battery life on Scott's Paranoid Android ICS build than I EVER did for any Gingerbread rom...

Honestly, I don't even remember by now
I have never payed that much attention to battery life..
usually lasts all day for me on JB, that's all I need
Sent from my sweet & buttery Infuse

the more recent ics and jelly bean kernels get great battery life due to fixed bt and wifi drivers (the wifi driver and binary were taken from another device from what i understand) and more stable cpu clock code than it had initially. not too much more than stock but i have to say it is better for me. but i guess it all depends on usage. one may have better standby vs awake battery life or something. the available kernels have been this way for atleast a month. when we start to see more kernels with undervolt it should get better yet.

I'm using CM10 8/23 and my battery life is good.
One of the best I even made a snapshot (can't upload right now): 51% left after 12 hours 46 minutes.

That's why I'm in a dilemma between jelly bean and gingerbread. I do appreciate JB a lot, way better functions. But still the battery life and compatibility are big issues. I can get 2 days under gb but only less than 12 hours in JB, that's a big issue.

I have been getting great battery life with the latest JB ROMs I have been using. Pretty much on par with the GB ROMs I used.
Sent from my SGH-I997 using xda app-developers app

Can't say i've had good luck with battery life, I used to average 3 hours of screen on time in Gingerbread, but since moving to ics/jb that has dropped to anywhere from 30 mins (if i leave the phone and standby drain eats it) to 1 hour 45 mins on a single charge...not good.
No rogue apps, no media scanner (i constantly check these things with betterbatterystats, i don't install anything i didn't install on gingerbread). Just the cell phone standby drain eating my battery alive (BBS reports it as GTALK_ASYNC and RILJ wakelocks).
I've been researching it for months now and get various answers (the wakelocks are caused by bad APN settings for example), tried all the fixes, still no luck. I suspect that it's probably a Rogers thing but who knows.

threi_ said:
Can't say i've had good luck with battery life, I used to average 3 hours of screen on time in Gingerbread, but since moving to ics/jb that has dropped to anywhere from 30 mins (if i leave the phone and standby drain eats it) to 1 hour 45 mins on a single charge...not good.
No rogue apps, no media scanner (i constantly check these things with betterbatterystats, i don't install anything i didn't install on gingerbread). Just the cell phone standby drain eating my battery alive (BBS reports it as GTALK_ASYNC and RILJ wakelocks).
I've been researching it for months now and get various answers (the wakelocks are caused by bad APN settings for example), tried all the fixes, still no luck. I suspect that it's probably a Rogers thing but who knows.
Click to expand...
Click to collapse
did you try cm9?

qkster said:
did you try cm9?
Click to expand...
Click to collapse
Yup, it's all been the same since ICS, I absolutely cannot get acceptable battery life, no matter what i do.

threi_ said:
Yup, it's all been the same since ICS, I absolutely cannot get acceptable battery life, no matter what i do.
Click to expand...
Click to collapse
are you getting AOS drain while on wifi?
you may consider a factory reset and sdcard format
when you reinstall, decline all google locations and backup services.

qkster said:
are you getting AOS drain while on wifi?
you may consider a factory reset and sdcard format
when you reinstall, decline all google locations and backup services.
Click to expand...
Click to collapse
I have done a factory reset, i formatted my sd card not too long ago (I also suspected this)
I also make sure google locations is disabled, never keep backup enabled (i did once by mistake and the auto restore nearly killed all my monthly data)
I am going to toggle wifi tonight and set a marker in BBS, i'll check the drain overnight (I did this a while ago and it did improve standby drain somewhat, but I am going to try it again)

threi_ said:
Can't say i've had good luck with battery life, I used to average 3 hours of screen on time in Gingerbread, but since moving to ics/jb that has dropped to anywhere from 30 mins (if i leave the phone and standby drain eats it) to 1 hour 45 mins on a single charge...not good.
No rogue apps, no media scanner (i constantly check these things with betterbatterystats, i don't install anything i didn't install on gingerbread). Just the cell phone standby drain eating my battery alive (BBS reports it as GTALK_ASYNC and RILJ wakelocks).
I've been researching it for months now and get various answers (the wakelocks are caused by bad APN settings for example), tried all the fixes, still no luck. I suspect that it's probably a Rogers thing but who knows.
Click to expand...
Click to collapse
i do notice battery drain in some areas. but not others. some people seem to think certain modems are effecting the cell standby drain, not sure myself. but there are many compatible modem.bins to try from att and t-mobile(t959v)

Just an update: wifi didn't help much.

threi_ said:
Just an update: wifi didn't help much.
Click to expand...
Click to collapse
I've been playing around a bit with different gb kernels, odex and deodex.
I found the drain issue much less on stock uclb3 kernel and rfs file system.
Almost all drain were associated with being on wifi...wakelocks and something else kills the battery.
If I have wifi off, there is usually not any issue.
You may have to play around a bit to see. My experience on cm9 and cm10 has been limited. I have noted several users noticing drain on cm9 and cm10 as well.
To avoid drain:
1. Use it to the max and constantly.
2. Leave the phone on airplane mode when not in use.
3. Turn off data (wifi and mobile data) and background data when not in use. I use this last mode.

Thanks for the tips man :good:
Airplane mode of course makes batt life better (disabling data doesn't), but when I start having to make sacrifices I didn't have to on GB it becomes a problem for me. Why should I jump through hoops and gimp my convenience for battery life that still isn't even as good as GB?
Instead of that i'd rather try to find the root cause of the problem. Doing so then allows us to help others that may have the same problem.
It definitely is an issue with the radio (or rather CM code overlooking something concerning the radio). What exactly, i'm not too sure. I've tried different modems as well, UCLB3 on JB was awful for battery life, UCKL2 and UXKG3 are slightly better but still not that great.
I don't want to complain about these things, I always try to research first, but damn....i'm stumped.

threi_ said:
Thanks for the tips man :good:
Instead of that i'd rather try to find the root cause of the problem. Doing so then allows us to help others that may have the same problem.
I don't want to complain about these things, I always try to research first, but damn....i'm stumped.
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Click to collapse
Yeah, I agree with you there. The techniques I use is pretty simple. Pose the hypothesis. Start with a full deck and slowly eliminate or start minimal and add.
ex: flash jb without gapps; without microSd. try different modem; try a different kernel. different kernel from different build.
have to use it for a few days to find out.
do the same for cm9.
add gapps...
add microsd
etc..
at some point, you will find out contributing factors.
There are a few battery thread that may be helpful if you havent looked:
http://forum.xda-developers.com/showthread.php?t=1408433&page=9

Ryo Misaki said:
Really? I got faaar better battery life on Scott's Paranoid Android ICS build than I EVER did for any Gingerbread rom...
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This is true, and you can save battery life w/ customization and now Scott is up to JB being one of the best battery life roms I've run
or just turn down your screen brightness