Develop Bugs

[Q] Battery draining too fast

i am running cm9 alpha 4 with kernel fe16 and i cant get through 5 hours without having to charge or throwing my extended battery in. i need my phone to last the day with the job that i do email,calls,text,social networks,ect. i would really like to know why my battery is draining so fast. i deleted alot of apps that were draining the battery, but it dies too fast still. please help.
Thanks
jordan

Let it get hit by lightning, did that and now my phone stays 100% all day
Sent from my SPH-D710 using xda premium

Lol thats funny ill try it
Sent from my SPH-D710 using Tapatalk 2

are you using a custom ROM? I'm kinda new to Samsung devices, but I know HTC's Sense was a battery hog, so I'm sure Touchwiz is the same.
Try installing CM9 or AOKP build 37.
I have AOKP Build 37 installed and my battery lasts the whole day.

jordan0314 said:
i am running cm9 alpha 4 with kernel fe16 and i cant get through 5 hours without having to charge or throwing my extended battery in. i need my phone to last the day with the job that i do email,calls,text,social networks,ect. i would really like to know why my battery is draining so fast. i deleted alot of apps that were draining the battery, but it dies too fast still. please help.
Thanks
jordan
Click to expand...
Click to collapse
You and me both brother. Been dealing with it for months. Pisses me off to no end when I see others posting 20-30 plus hours -_-
Sent from my SPH-D710 using xda premium

http://e4gtcm.blogspot.com/p/customization-guide.html
Read the power saving options.
Wrong section by the way. It should be in Q and A, not general.

Try a different rom, tfe16 has been the best yet for me and agat has an updated version coming soon. Also dont use 4g, wifi, gps etc unless you need them. Solid black background and lockscreen, inverted apps and dark settings. Ditch facebook twitter and crap like that that updates and burns battery.

someguyatx said:
Try a different rom, tfe16 has been the best yet for me and agat has an updated version coming soon. Also dont use 4g, wifi, gps etc unless you need them. Solid black background and lockscreen, inverted apps and dark settings. Ditch facebook twitter and crap like that that updates and burns battery.
Click to expand...
Click to collapse
Really no point on running ICS if the phone is half way neutured. Just my opinion.
Sent from my SPH-D710 using Tapatalk 2

someguyatx said:
Try a different rom, tfe16 has been the best yet for me and agat has an updated version coming soon. Also dont use 4g, wifi, gps etc unless you need them. Solid black background and lockscreen, inverted apps and dark settings. Ditch facebook twitter and crap like that that updates and burns battery.
Click to expand...
Click to collapse
Basically if you don't use your phone, your battery is awesome...

Go outside and play instead of sitting on your phone youtube'in

Whatever guys that stuff applies to any mobile device. Turn off stuff you arent using, ditch the live wallpapers, worthless apps, and status updates and you get more battery life. You want to surf, download, stream then by all means toggle wifi or 4g on but no reason to leave it on while you are doing nothing. Same goes with gps and bluetooth.

someguyatx said:
Whatever guys that stuff applies to any mobile device. Turn off stuff you arent using, ditch the live wallpapers, worthless apps, and status updates and you get more battery life. You want to surf, download, stream then by all means toggle wifi or 4g on but no reason to leave it on while you are doing nothing. Same goes with gps and bluetooth.
Click to expand...
Click to collapse
With the exact same setup I have now, I get 20-30 hours on gingerbread. On cm9... I get five.
I don't leave wifi on. Don't leave 4G on. Usually have a minimal screen on time of around thirty freaking minutes.
Don't tell me that I need to cripple my phone (i use it for business). Because there is something clearly wrong. I suspect it is the kernel. I don't have unnecessary apps installed (aside from ones that work great with gb). Don't use a live wallpaper. I do however, refuse to disable auto syncing.
There is clearly an issue with ICS.
I'm not going to turn my smartphone into a paperweight like you suggest.
Sent from my SPH-D710 using xda premium

Not using stuff you don't need is hardly crippling your phone its smart use. I never said anything about turning off auto sync either but you should be selective what you sync. Google plus, drive, picasa all sync pics and other crap in the background without telling you and it kills your battery especially if you are in a bad signal area. Figure out whats draining your battery by using better battery stats and apps like system panel lite http://forum.xda-developers.com/showthread.php?t=1179809
Honestly though try another rom and do a clean install. If you get 80% less battery life no amount of tweaks will fix it and the ics leaks are good now. Several months ago the battery life was half of gb and now they are about the same.

someguyatx said:
Not using stuff you don't need is hardly crippling your phone its smart use. I never said anything about turning off auto sync either but you should be selective what you sync. Google plus, drive, picasa all sync pics and other crap in the background without telling you and it kills your battery especially if you are in a bad signal area. Figure out whats draining your battery by using better battery stats and apps like system panel lite http://forum.xda-developers.com/showthread.php?t=1179809
Honestly though try another rom and do a clean install. If you get 80% less battery life no amount of tweaks will fix it and the ics leaks are good now. Several months ago the battery life was half of gb and now they are about the same.
Click to expand...
Click to collapse
Trust me, I've done all this. I have the same battery life with ICS now that I did a couple months ago. Going to stock, it is wonderful. Had my battery tested by sprint yesterday, it's fine. So, i'm just waiting for a real kernel and hoping for the best.
Sent from my SPH-D710 using xda premium

Turn off LED notifications they're a known issue for wake-lock.

I get terrible battery life on alpha 5. Change to a stock kernel might help.

Kobridge's tweaks http://forum.xda-developers.com/showthread.php?t=1668853 along with Badass Battery and CPU Spy have helped me trace battery drainers. Also wholeheartedly agree turning off apk's and functions that are of specious value helps greatly ie.( auto rotate, auto brightness, dialing back on sync; etc.)
Good luck

[Discussion] Official JB 4.1.2 Stock

K....I apologize if I missed it, but didn't see a stock jb thread....aside from the one from months ago that has a billion posts. I think a new one is not unreasonable.
Anyway... just curious about what others think.
After debloating it heavily....all T-Mobile and Samsung junk gone and a lot more....and stopping apps from auto starting with autostarts...I'm pretty happy!
GPS took about a minute to lock first time ...but now its quick. And accurate.
It is super smooth after a day of settling.
Going on 14 hours on battery with light to moderate use and at 59 percent left. Seems on par with most stuff I've ran.
I do miss some of the customization ...which will lead me to start flashing soon I'm sure. LOL
But overall....I'm impressed.
Anyone wanna share, ask questions or debate?
Sent from my cell phone telephone....

I had it working once on my T989D, it was heavily bloated, still seemed faster than usual leaked builds. Doesn't really matter now though because I can't flash anything based off this official tmob update because every ROM I've tried with it either bootloops or FC`s constantly. A real shame, I looked forward to this for so long, I assume it doesn't work because I have the koodo t989. Waiting on the Telus version to be released.
Sent from my SGH-T989D using xda app-developers app

I have a T989D also and I've been able to get it to run perfectly fine for over 24 hours.
I have version 1 of Infamous S2 and I had to flash it, wipe cache and dalvik, reboot let settle for ten mins then flash the newest radio or it would keep dropping my koodo radio.
I think the key is wiping cache and dalvik after you flash it, I did also do a full internal wipe and installed from an sd card though.

I didn't see a huge increase in speed. Although it does feel a little smoother.
The increase in battery life has been huge for me though. On ICS I had a terrible average of about 6-8 hours depending on light to moderate use. On Jelly Bean I'm averaging 10-11 hours on more than moderate use.

Do you have a list of what you removed?

I also can't flash any recoveries except the old cwm so that's probably part of my problem.
Sent from my SGH-T989D using xda app-developers app

AMartLA said:
I didn't see a huge increase in speed. Although it does feel a little smoother.
The increase in battery life has been huge for me though. On ICS I had a terrible average of about 6-8 hours depending on light to moderate use. On Jelly Bean I'm averaging 10-11 hours on more than moderate use.
Click to expand...
Click to collapse
That's pretty decent battery life and what I used to get when on the stock 4.0.4, but my battery life with this one has been worse. It drops below 50% after 4 hours off the charger with the same amount of use as before. I noticed in a developer thread a screenshot of someone getting great battery life as well. Did you root and debloat?
It seems like the OP was able to do that with some success. I really like the performance otherwise, much better improvement over 4.0.4. OP, are you rooted? Also, I searched the Play Store for autostarts and saw a few different options...would you mind sharing which developer's autostarts app you're using? I saw one that's paid and a couple that were free. Thanks!
EDIT: The other thing that's frustrating is when a new text comes through, it just says "New Message Arrived." I used to be able to change that in 4.0.4 to where the text would display in the notification area, but I can't find that on this version. Wondering if TouchWiz did away with it or it's because of my corporate password policy.

k-dogg said:
That's pretty decent battery life and what I used to get when on the stock 4.0.4, but my battery life with this one has been worse. It drops below 50% after 4 hours off the charger with the same amount of use as before. I noticed in a developer thread a screenshot of someone getting great battery life as well. Did you root and debloat?
It seems like the OP was able to do that with some success. I really like the performance otherwise, much better improvement over 4.0.4. OP, are you rooted? Also, I searched the Play Store for autostarts and saw a few different options...would you mind sharing which developer's autostarts app you're using? I saw one that's paid and a couple that were free. Thanks!
Click to expand...
Click to collapse
The 10-11 hours is even more amazing to me because I've been using my phone way more than usual (Simpsons Tapped Out is addicting)
I did do a full recharge/drain a couple times after upgrading, so maybe that may help you.
These are my steps in case you want to give it a try.
(On a full charge 100%)
I used odin to flash back to ICS stock unrooted
I then used kies to upgrade to JB
After the upgrade, I went into recovery and did a wipe/factory reset for good measure.
Unplugged phone and started setup (Disabled some tmobile bloat)
Used the phone until it ran out of charge.
Charged the phone completely .
Unplugged and drained it completely again.

K....not gonna quote a bunch of stuff....but in response to a few things.
This was my experience, but trying to use the tlle4 Telus radio left me frozen at bootup mostly....I got in a couple times, but it wouldn't let me save my apn settings and I had no signal. Flashed the new jb radio and manually had to enter apn settings, which saved this time...and I was good. Tlle4 has better signal where I live, but the new one works OK.
What did I freeze? Well, mostly anything with T-Mobile or Samsung in its name. Now everything is working fine, so soon I will uninstall and delete them completely.
I use the app specifically called Autostarts. It is a paid app....but gold to me. I stop any app I am familiar with and don't want starting by itself at startup or other events. Especially maps!! Otherwise it seems to run all the time. I disable it in autostarts anywhere I find it. Then it only runs when I start it.
Think I got most things that were directed to me covered.
I also use advanced task killer free. I do not ever autokill apps. I use it as an easy way to kill things after I run them that don't close properly by themselves. Like maps and Canada's the weather network app.
Last night when I plugged in my charger I was at 24 hours and 3 hours screen time with 22 percent remaining. So stock seems no better or worse than most other jb roms I've used.
Sent from my cell phone telephone....

nashy10 said:
I had it working once on my T989D, it was heavily bloated, still seemed faster than usual leaked builds. Doesn't really matter now though because I can't flash anything based off this official tmob update because every ROM I've tried with it either bootloops or FC`s constantly. A real shame, I looked forward to this for so long, I assume it doesn't work because I have the koodo t989. Waiting on the Telus version to be released.
Sent from my SGH-T989D using xda app-developers app
Click to expand...
Click to collapse
I'm Telus. Works good! Try flashing the new radio. Then rom. Make sure to wipe cache and davlik after you flash...then reboot.
Sent from my cell phone telephone....

k-dogg said:
That's pretty decent battery life and what I used to get when on the stock 4.0.4, but my battery life with this one has been worse. It drops below 50% after 4 hours off the charger with the same amount of use as before. I noticed in a developer thread a screenshot of someone getting great battery life as well. Did you root and debloat?
It seems like the OP was able to do that with some success. I really like the performance otherwise, much better improvement over 4.0.4. OP, are you rooted? Also, I searched the Play Store for autostarts and saw a few different options...would you mind sharing which developer's autostarts app you're using? I saw one that's paid and a couple that were free. Thanks!
EDIT: The other thing that's frustrating is when a new text comes through, it just says "New Message Arrived." I used to be able to change that in 4.0.4 to where the text would display in the notification area, but I can't find that on this version. Wondering if TouchWiz did away with it or it's because of my corporate password policy.
Click to expand...
Click to collapse
Sorry...just saw that. Yes, I'm definitely rooted!
Notification wise....I disable stock messaging notification cause I use handcent.
Sent from my cell phone telephone....

k-dogg said:
That's pretty decent battery life and what I used to get when on the stock 4.0.4, but my battery life with this one has been worse. It drops below 50% after 4 hours off the charger with the same amount of use as before. I noticed in a developer thread a screenshot of someone getting great battery life as well. Did you root and debloat?
It seems like the OP was able to do that with some success. I really like the performance otherwise, much better improvement over 4.0.4. OP, are you rooted? Also, I searched the Play Store for autostarts and saw a few different options...would you mind sharing which developer's autostarts app you're using? I saw one that's paid and a couple that were free. Thanks!
EDIT: The other thing that's frustrating is when a new text comes through, it just says "New Message Arrived." I used to be able to change that in 4.0.4 to where the text would display in the notification area, but I can't find that on this version. Wondering if TouchWiz did away with it or it's because of my corporate password policy.
Click to expand...
Click to collapse
The new message thing was bothering me too. After seeing your post I looked more closely at the settings. Open Messaging and then open the settings. Under notification settings check preview message. Now the text will display in the notification area like before.

The JB this phone got is crap. Doesn't the same phone for att Skyrocket get ripple lock screen and multi window? Also we can NOT download the voice files for offline voice recognition.
The Skyrocket port of JB for this phone can do all of that.

s3nr1 said:
The JB this phone got is crap. Doesn't the same phone for att Skyrocket get ripple lock screen and multi window? Also we can NOT download the voice files for offline voice recognition.
The Skyrocket port of JB for this phone can do all of that.
Click to expand...
Click to collapse
I'm using the Embryo rom now. I did try installing the new stock JB rom but it just can't compared to some of the custom roms. I haven't try the roms by ptmr3, Rushing, and Jamison. I'll probably wait for a few more updates before trying the tmobile JB roms. I missing using Wifi-calling sometimes but the Embryo is just a very good rom.

Cyanogenmod 10.1 terrible battery life

I have recently installed cyanogenmod 10.1 onto my galaxy s3. The battery life since then has been very poor. If I leave my phone on without even using it, it drains about 1% every couple of minutes. When I look at the battery it says that the process of "phone" is taking up a huge amount of battery. Can anyone tell me why this is or how I can fix it?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

I have recently installed cyanogenmod 10.1 onto my galaxy s3. The battery life since then has been very poor. If I leave my phone on without even using it, it drains about 1% every couple of minutes. When I look at the battery it says that the process of "phone" is taking up a huge amount of battery. Can anyone tell me why this is or how I can fix it?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

crayonslayer said:
I have recently installed cyanogenmod 10.1 onto my galaxy s3. The battery life since then has been very poor. If I leave my phone on without even using it, it drains about 1% every couple of minutes. When I look at the battery it says that the process of "phone" is taking up a huge amount of battery. Can anyone tell me why this is or how I can fix it?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Generally these issues are user related and not ROM related.
I was so frustrated with some of the ROMs when I first started out but then realized I was doing a few things wrong (mainly because these ROMs, including CM10 have very decent battery life).
First, I would recommend a clean reflash:
factory wipe / reset
wipe cache (some say twice)
wipe dalvik cache
install ROM
after rom loads, wait 5 minutes (don't touch at all) then reboot
now you must wait.. sometimes it takes 24 hrs or so for a ROM to correctly load.
Not sure how true it is, but some say to now drain battery down, then fully charge.
At any rate, I follow these steps all the time and works great!
Also, keep in mind that most of battery issues are user related.. so think about what settings, apps and kernels are being used on your end before question a ROM. This is why waiting 24 hours or so before installing all of our "crap" will give give the ROM more time to settle.
Hope this help!!!! Happy Flashing

Thanks for the reply. However, I have looked at what apps and processes are draining my battery. And it appears it is the "phone" process that is doing this.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Just to piggyback on spenny88's reply, exactly what did you come from (stock?) and how did you wipe and flash?
This is all key as to how well your device will perform.

xBeerdroiDx said:
Just to piggyback on spenny88's reply, exactly what did you come from (stock?) and how did you wipe and flash?
This is all key as to how well your device will perform.
Click to expand...
Click to collapse
I have noticed something similar. I am coming from stock. I am going to guess my battery life is in the neighborhood of 10% less. I wiped everything before I installed CM. That said, this feels so much faster than stock.

Same Battery Issue on p1 (TMobile original Galaxy Tab 7.0)
spenny88 said:
Generally these issues are user related and not ROM related.
I was so frustrated with some of the ROMs when I first started out but then realized I was doing a few things wrong (mainly because these ROMs, including CM10 have very decent battery life).
First, I would recommend a clean reflash:
factory wipe / reset
wipe cache (some say twice)
wipe dalvik cache
install ROM
after rom loads, wait 5 minutes (don't touch at all) then reboot
now you must wait.. sometimes it takes 24 hrs or so for a ROM to correctly load.
Not sure how true it is, but some say to now drain battery down, then fully charge.
At any rate, I follow these steps all the time and works great!
Also, keep in mind that most of battery issues are user related.. so think about what settings, apps and kernels are being used on your end before question a ROM. This is why waiting 24 hours or so before installing all of our "crap" will give give the ROM more time to settle.
Hope this help!!!! Happy Flashing
Click to expand...
Click to collapse
Having the same issue with my Samsung Galaxy Tab P1000 (p1 in Cyanogenmod). "Cell Standby" is taking as much juice as "Screen", and I am using Wifi only. I don't even have a sim card in the device. Wish there was a way to disable Mobile Networks without disabling Wifi via Airplane Mode.
I installed through Rom Manager as upgrade from CyanogenMod 9.1 with wipe. I will try the recommendations above and report back.

Try the latest nightly (or RC4) of CM10.1. The battery life has definitely improved a bit.

Samsung Galaxy s3 intl battery drain cm10.1
I recently installed cm10.1 nightly on my international S3, it has cut the battery life down drastically and seems to drain over 10% an hour, even when not being used.
I've tried everything that i've came across by searching and still haven't had any real gain on battery life. Doing a full wipe and reinstalling doesn't help, and i've given it time for battery to calibrate; no difference. Even with wi-fi and location services off i'm getting a big drain. I've even tried switching to Slim Bean, if anything the battery was worse still.
Firstly i'm getting that Android OS is eating up a large chunk (usually above 60%) and using BetteryBatteryStats i don't see anything out of the ordinary in terms of partial and/or kernel wakelocks. I really don't wanna have to put the stock Touchwiz rom back on but that seems like the ways it's going. Any help would be greatly appreciated. Is there anything else i can try?

i find i get terrrible battery life on AOSP when i restore google through the setup. i skip thru the installation and open the play store to enter my gmail. then, before restoring my apps, i let it charge to 100%. honestly AOSP still doesnt have decent battery life, but it does improve if you play with it and try different things

hapticxchaos said:
i find i get terrrible battery life on AOSP when i restore google through the setup. i skip thru the installation and open the play store to enter my gmail. then, before restoring my apps, i let it charge to 100%. honestly AOSP still doesnt have decent battery life, but it does improve if you play with it and try different things
Click to expand...
Click to collapse
I would respectfully disagree with you. I have run a number of ASOP based ROMs and find them better than stock in terms of battery life. Certainly better in terms of not making my eye bleed (as I hate touchwiz, but that is a personal preference). I find that SlimBean gets me the best battery life of the CM based ROMs.
To clarify, I get just over 1%/hour battery drain, when idle (as measured by BBS) with GPS and google sync enabled, mostly on LTE. My phone happily spends almost all the time I am not actively using it in deep sleep.
The recipe to achieve this is to disable google location reporting and history, avoid tons of widgets that constantly update themselves, disable samsung services that you do not use, and monitor battery usage to look out for rogue apps that do stupid thengs, like hold wakelocks when they should be idle. Dropping the minimum frequency to 192 MHz, and going to ASSWAX (CPU scheduler) and ROW (I/O scheduler) also helps.
To get decent performance you do need to install things properly. Which means ensuring that you don't have conflicting settings or random leftovers. I tend to dirty flash updates but you reallly do get better and more consistent performance going through the pain of a complete clean install (format system, clear cache, reload apps from the store) when you are switching ROMs. Only use TiBu to restore app data. Once you do this, in my experience rogue wakelocks are the biggest cause of lousy bettery perfromance, and you can track down and eliminate these. I have around 150 apps loaded and do not run any task manager/autokiller. My phone typically runs without any reboots or power cycles between ROM updates which equates to rebooting every couple of weeks to a month. I have seen over 2 months of uptime.
Certainly should be able to go 16-20 hours between charges which I would consider real world all day functionality. I guess my point is that rock solid stability and all day battery life is possible if you are systematic about how you do things.

crayonslayer said:
I have recently installed cyanogenmod 10.1 onto my galaxy s3. The battery life since then has been very poor. If I leave my phone on without even using it, it drains about 1% every couple of minutes. When I look at the battery it says that the process of "phone" is taking up a huge amount of battery. Can anyone tell me why this is or how I can fix it?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
I have the same problem..... Battery lose 1 % every 2 mins thats terible. :crying:
How could i find a fix ? plz if u have fix yours tell me ???

[Q]

hey all,
does anybody know why we get way less battery life on AOSP then TW? is there some form of default battery saving that TW does that AOSP doesn't have built in? I flash new ROM's constantly (normally every 1-2 weeks) and I always notice a huge difference between the two. I am also using a double size battery btw.
on TW i can use my phone a decent amount all day and have 4G running without ever turning it off. this includes social apps, emails, watching videos, streaming music. at the end of the day i normally have 60~75% battery left.
on AOKP doing the same thing i normally have 30~60% battery left.
I just find it interesting because its so opposite of windows or linux on PC. where the cleaner your OS the better the battery life.
thanks!

I personally have no idea. My initial thoughts, check your kernel settings for it's governor and clock speeds. It's also possible that AOSP roms you're using have a more widgets running, which can be battery drains.
As far as I knew, 4G used less power than 3G radios. Maybe that was for WiMax. I'm still in the habit of if I don't need it, shut it off.

lovekeiiy said:
I personally have no idea. My initial thoughts, check your kernel settings for it's governor and clock speeds. It's also possible that AOSP roms you're using have a more widgets running, which can be battery drains.
As far as I knew, 4G used less power than 3G radios. Maybe that was for WiMax. I'm still in the habit of if I don't need it, shut it off.
Click to expand...
Click to collapse
thanks for the answer! i was thinking maybe it had something to do with the kernel too. its weird tho!

Well, one of the functions of the kernel, at least the custom ones, is power usage. If you change some settings you may be battery life. You could also try a different kernel such a Perseus. I use it with a deoxidized stock MC2 rom. I also know its quite popular; STweaks works well with it.

Bad Battery Life since KitKat

Hi Guys,
i have a bit of a problem with the battery in my GNex maguro.
I'm an avid Rom flasher, but when i have something that works well i usually settle with it for a while. So i flashed Cataclysm (http://forum.xda-developers.com/showthread.php?t=1995801) sometime in the last months and it was running great. Best bettery life i had so far.
Then with the release of Android 4.4 i looked for a rom to test it. I flashed XP (http://forum.xda-developers.com/showthread.php?t=2539201) and i really like the 4.4 changes.
But since then my battery won't even last a day in standby mode. I thought maybe it's an issue with 4.4. still, but even after flashing back to Cataclysm (newest release) i still had the same issues. I thought it may well be, that the final version isn't what it used to be, so i flashed another rom again. This time Purity (http://forum.xda-developers.com/showthread.php?t=2012706) aaaand... still the same problem. So now i'm pretty much lost. I also tried different kernels (lean kernel specifically) but to no avail.
My battery used to last 2+ days in idle mode. Now i can see my battery drop every minute. It barely holds over 10 hours. I already did a full phone wipe and flashed back to stock before installing cataclysm again but still no improvement.
I hope someone can help me here or point in the right direction.
Sorry if this topic already exists, but the search funtion doesn't seem to work right now and google didn't show something helpfull.
Thank you all in advance.

I don't know why you would still have bad battery life moving back to the original rom you used but.. on 4.4 it is most likely the new Google Now features that constantly listen for voice commands. Disable it by long pressing on an empty part of the home screen and go to settings. Slide Google Now Off and go to voice and turn off hotword detection as well.
I get great standby battery life on 4.4. I'm running the 11/29 ART build of cmetal(toro), 150ish hours of uptime without any issues so far.

Re: Bad Battery Life since KK
What kernel are you running? Are you just using whatever kernels come with each ROM?

I'll try turning off google now and the voice stuff and report back.
It still seems really weird to me, that the problem still persists after flashing back to 4.3. My guess would be, that 4.4 flashes something hidden that messes with the battery. But i don't know where or what.
Especially since it persists after a complete wipe (/data, /system and /cache).
Well, i'll see how it behaves without google now.
What kernel are you running? Are you just using whatever kernels come with each ROM?
Click to expand...
Click to collapse
Well i used mostly lean Kernel with 4.3 roms but i can't find any 4.4 kerneles besides CM. I have XP installed right know which uses CM Kernel.

Re:Bad Battery
Make sure your governor is set to interactive or ondemand...it could be seeing power drain from being set to one of the performance settings.
It's also possible that your battery is just going bad...do you have a backup battery you can try?
Well i used mostly lean Kernel with 4.3 roms but i can't find any 4.4 kerneles besides CM. I have XP installed right know which uses CM Kernel.[/QUOTE]

It could just be that you need to replace your battery. They are only good for so many charges and do degrade.
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Reporting back. After deactivating google now yesterday my battery is still ****. It's at 50% after 2h idle and 30 minutes screentime. Before the 4.4 flash it would be at around ~85-90% now. I suspect that 4.4 flashes something in some hidden partition that i don't have access to, that messes with the battery. Users on other boards report the same issues as i have.
dwoods1983 said:
Make sure your governor is set to interactive or ondemand...it could be seeing power drain from being set to one of the performance settings.
It's also possible that your battery is just going bad...do you have a backup battery you can try?
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Click to collapse
Just checked. Governor is set to interactive. It's also the default setting.
I sadly don't have a backup battery.
It could just be that you need to replace your battery. They are only good for so many charges and do degrade.
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Could be, of course. But it's kinda weird that the decline is so dramatic and it has to be a pretty big coincidence that it just happend after a 4.4 flash. Seems unlikely to me.
edit: I'll order a new battery just to eliminate the battery as the source of error.

Mine is pretty bad but it's running google play to death so maybe gapps flash was bad? dunno

merid14 said:
Mine is pretty bad but it's running google play to death so maybe gapps flash was bad? dunno
Click to expand...
Click to collapse
this maybe issue of ram management.. try some good apps to control those background & foreground app from running without control. dont use any task killer.. please
i recommend using greenify.apk. donate version much better.
sorry for my bad english
galaxy nexus i9250

Same problem here. Since I flashed Kitkat on my phone, battery life isn't enough to last a day on standby. I tried installing another kernel (ASKP) but to no avail. Please keep in mind that I'm not very experienced with custom roms and rooting my phone. Does anyone have some good tips to improve battery life?

Update: After fiddling around a bit with better battery stats, greenify and a bunch of other stuff... i still don't have a solution. I made some screenshots of my stats, but can't post them here because i don't have permission to do that...

So i reflashed swordrune's cm11 rom and it seems to be working better with 1080p kernel w/o art enabled. i'm 11 hrs in with 80% battery on the extended battery (toro btw)

Un4s said:
Update: After fiddling around a bit with better battery stats, greenify and a bunch of other stuff... i still don't have a solution. I made some screenshots of my stats, but can't post them here because i don't have permission to do that...
Click to expand...
Click to collapse
are u sure greenify didnt helping??? already got rooted & exposed installer running??
can u state your screen on time??
usually gnex can handle 3-4 hour screen on depend on battery condition n phone performance... not include idle n stanby time.
galaxy nexus i9250

memaro_maro said:
are u sure greenify didnt helping??? already got rooted & exposed installer running??
can u state your screen on time??
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Yes, i am rooted, but i didn't have the donate version of greenify. Bought it now and will test again.
Screen on time ~1:30h

Un4s said:
Yes, i am rooted, but i didn't have the donate version of greenify. Bought it now and will test again.
Screen on time ~1:30h
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Click to collapse
that will help.
if u lightweight user, i suggest u to optimized performance. use apps such trickster mod, rom toolbox, or in addition of any light battery saving apps ( for optimization)
should be improve on screen time.
galaxy nexus i9250

Not to hijack your thread, but I'm also experiencing battery issues after flashing the XP 4.4 rom. I did enjoy it but the battery drain was terrible. Not only that, for some reason my charger drains on a 1A charger but charges slowly on a .7A somehow. I only have 1 micro usb cable so I can't test if it's the cable and I can't find any apps to check the current speed. I tried downgrading and flashing to Slimbean but so far it's been no dice.

memaro_maro said:
that will help.
if u lightweight user, i suggest u to optimized performance. use apps such trickster mod, rom toolbox, or in addition of any light battery saving apps ( for optimization)
should be improve on screen time.
Click to expand...
Click to collapse
Ok, back again. hibernated every app and system-app that was running in background. Still wasn't getting better. I then saw the only services still running are google location services. I deactivated them now to see if these are causing it.
The biggest wakelocks i have are "wlan_rx_wake" which seem to be a known problem with KK:
http://forum.xda-developers.com/showthread.php?t=2519294
I then researched again and found several threads in google groups which describe the same problems that i have. Across several devices (though mostly Nexus 4, 5 and 7).
Google seems to be aware of that issue and is working on it.
Not to hijack your thread, but I'm also experiencing battery issues after flashing the XP 4.4 rom. I did enjoy it but the battery drain was terrible. Not only that, for some reason my charger drains on a 1A charger but charges slowly on a .7A somehow. I only have 1 micro usb cable so I can't test if it's the cable and I can't find any apps to check the current speed. I tried downgrading and flashing to Slimbean but so far it's been no dice.
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Click to collapse
Yes, same for me. Charging is really slow since 4.4 as is the bootprocess of my phone. From the first vibrate when switching the phone on it takes ~10 seconds until the google logo pops up.

i dont know any about gapps issues bcoz not running any gapps in my phone since last year.
1. try searching for updated radio.img (baseband/ radio) if got any network issue.
2. try install trickster mod app. this app can help you for tweaking into deep sleep, also help for optimizing.
galaxy nexus i9250

crayjin said:
Not to hijack your thread, but I'm also experiencing battery issues after flashing the XP 4.4 rom. I did enjoy it but the battery drain was terrible. Not only that, for some reason my charger drains on a 1A charger but charges slowly on a .7A somehow. I only have 1 micro usb cable so I can't test if it's the cable and I can't find any apps to check the current speed. I tried downgrading and flashing to Slimbean but so far it's been no dice.
Click to expand...
Click to collapse
try this for helping you go into deep sleep
galaxy nexus i9250

memaro_maro said:
try this for helping you go into deep sleep
galaxy nexus i9250
Click to expand...
Click to collapse
Hmm I don't know if this is going to resolve the charging problem but i will try it and also try and use a battery calibrater and come back.