Develop Bugs

Battery Life - screen on time & battery conditioning

Firstly let me say I'm a long time lurker of XDA, I don't often post but rather keep quiet in the shadows. I've owned many handsets (Including the Inc. and TB, meaning I know bad battery life) and this has always been the site I go to for hacking and general information.
I don't expect definite, for-sure answers. I'm just seeking some advice on this, I absolutely love this phone and a Nexus on Verizon has always been my dream.
Secondly, I'm not posting here asking why my screen uses over 50% of the depletion on my charges, it is supposed to, I know that. I see many threads asking about that, which is why I waited to post not wanting to ask what has been already. But I am asking about my case specifically, and want input.
The main thing here is the amount of screen on time I am able to get.
I have had my GNex since Saturday afternoon, when I bought it the battery was dead and I fully charged it, the first day I used it mostly while plugged into AC, using 4G to install my apps. Since then (the last two days) I have tried depleting the charge almost entirely before charging, shying away from charging mid-depletion. I have tried using CDMA mostly (my area has just marginally good 4G), hoping I could stop some of the bleeding, but to no avail. I should also say I yesterday for the first time threw a custom ROM/Kernel on and that seemed to help marginally, though in truth I don't see that really changing the screen power consumption.
Please take a good look at both screenshots, as said I care nothing about the %.
(I am aware there is still 13% remaining on my charge, but even so this seems just crazy)
In the first screenshot at the bottom it's apparent this isn't a huge amount of screen on time.
I would kill to get 4 hours of screen on time with this thing, heck even in the area of 3, but it doesn't seem to be in the foreseeable future as it looks now. I can get out 2 at most to this point, and that is on almost entirely 3G/WiFi with light/moderate data usage.
I really need to ask. Do I just need patience to let this battery break in? I hear some say this can be a week-long thing, but shouldn't I see some increase by now?
If not, do I seek out a replacement battery or could this be an actual defect of the AMOLED drawing more than it should?
Thanks for your help!
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There were quite a lot of awake time during screen off if I look your stat.
Thats your problem.
Too much sync?
Mine can get up to 3 hours and 45 minutes screen on time, span into 2 days stand by, gsm version.

Good point, looking into playing with sync in settings and JD.
But while that accounts for the drop during the 10hr overnight period (20% of battery/83% of time), I still feel the draw during screen on (80% of battery/17% of time) is just insane, even given the AMOLED.
Sent from my Galaxy Nexus using XDA App

Maybe its a rogue app running in the background making the battery drain real fast. Try wiping and running the phone normally without restoring your apps and see if that will improve. I'm having the same problem as you but with the GSM version. I'm looking through my apps though.
Sent from my Galaxy Nexus using Tapatalk

Here's my result
xl DIGITAL lx said:
Maybe its a rogue app running in the background making the battery drain real fast. Try wiping and running the phone normally without restoring your apps and see if that will improve. I'm having the same problem as you but with the GSM version. I'm looking through my apps though.
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
Here are some of the usual suspects:
- Facebook for Android app (uninstall it and replace it with Friendcaster and change the frequency of update t less often will do the trick)
- Accuweather widget or any other weather widgets
- Whatsapp
- Viber
- Latitude (google maps) - Login to Latitude and then ensure you select the option where it does not report your location and then sign out of Latitude.

Honestly, I have the GSM version and I've rarely gotten over 3 hours screen time. It's the screen. The battery life sucks, so you'll have to just ABC (always be charging), at the desk/sofa/car.
What I really want to ask is how you got the battery percentage inside the battery icon?!

This is also my exact problem. I can get great life if I don't touch the phone. Every time I use it for a few seconds, that's 2-3% gone. Browse the internet for 15 mins? Forget it, that's 10% gone at least.
I guess it's just the price to pay for such a gorgeous screen.

Black Mirror said:
Honestly, I have the GSM version and I've rarely gotten over 3 hours screen time. It's the screen. The battery life sucks, so you'll have to just ABC (always be charging), at the desk/sofa/car.
What I really want to ask is how you got the battery percentage inside the battery icon?!
Click to expand...
Click to collapse
The custom ROM I'm running had it as the default icon: AXI0M 2.3.
9kracing said:
This is also my exact problem. I can get great life if I don't touch the phone. Every time I use it for a few seconds, that's 2-3% gone. Browse the internet for 15 mins? Forget it, that's 10% gone at least.
I guess it's just the price to pay for such a gorgeous screen.
Click to expand...
Click to collapse
1++++++++++++++++++

pcphobic said:
Here's my result
Here are some of the usual suspects:
- Facebook for Android app (uninstall it and replace it with Friendcaster and change the frequency of update t less often will do the trick)
- Accuweather widget or any other weather widgets
- Whatsapp
- Viber
- Latitude (google maps) - Login to Latitude and then ensure you select the option where it does not report your location and then sign out of Latitude.
Click to expand...
Click to collapse
What is your total screen on time during those charges?
The only app in that list I really have to check is latitude. Doing so now.

I think op should stop playing wind up knight in his sleep. Case closed. Just kidding. But seriously, probably got something using up cpu cycles when using phone and not using it. If i dont play any games, i easily get 4 hours screen time, and got 5.25 over the weekend.
Sent from my Galaxy Nexus using xda premium

@rbiter said:
I think op should stop playing wind up knight in his sleep. Case closed. Just kidding. But seriously, probably got something using up cpu cycles when using phone and not using it. If i dont play any games, i easily get 4 hours screen time, and got 5.25 over the weekend.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
When I flashed this ROM I purposely left games out when setting it back up, the only one is Drop7 which I purposely make sure gets killed when I'm done. All apps which sync I have either at minimal amounts or off entirely.

Are you in north america? Try ugkk7 radio maybe? I am in the usa and xxkk6 was ok, but since i flashed ugkk7 reception is excellent. Oh wait. Youre cdma version. I dont know if the same applies. I do know radios designated UGxx# are north american.
Sent from my Galaxy Nexus using xda premium

you could install CPU SPY to see if your device is going in deepsleep, I had a problem that one app was using most of the time 350mhz and was using my battery very fast.
after that i found the app with battery monitor and disabled the app to see if the problem was solved, and that was the case, and i have now a battery life from more then a day instead of 5 hours.

I can get 3.5 hours of screen on time spread over ~36 hours or so on the GSM version.. if LTE is on I would assume around two hours of screen on time was normal for a Verizon version just because of how LTE is but it did look like your CPU was awake a lot as well so also it could be a rogue app, not necessarily a game.
Sent from my Galaxy Nexus using xda premium

check here
http://forum.xda-developers.com/showthread.php?t=1387243

joshnichols189 said:
I can get 3.5 hours of screen on time spread over ~36 hours or so on the GSM version.. if LTE is on I would assume around two hours of screen on time was normal for a Verizon version just because of how LTE is but it did look like your CPU was awake a lot as well so also it could be a rogue app, not necessarily a game.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Will give that a try. Like mentioned though almost none of that time was 4G enabled. (Maybe 10mins of that first green section.) The slope is just as steep.
In truth this was a fairly data-light charge.
Could it be the rogue app would actually sap battery only when the screen is on? Even though there is wake time where there shouldn't, that isn't the main area of drain.
Sent from my Galaxy Nexus using XDA App

[Q]Battery lasting suggestions

I had the Thunderbolt with OEM extended battery, AOSP rom (TH3ORY roms), and imoseyon's lean kernel and used to get over 24-30 hours of battery life.
I've tried the 4.0.2, 4.0.3, and 4.0.4 with imoseyon and franco's kernels and still 7-8hrs is all I could hope for my Galaxy Nexus(stock battery). I've ordered the bigger battery with Costco but not here yet. Any suggestions other than the obvious: (please add to the list and I will update this original post)
1- Keep on AUTO brightness
2- avoid widgets
3- use a custom kernel (which one?)

I use francos with CM9. I always have everything switched on (Data, Sync, Wifi, GPS) and it only goes to about 50-40% after a days use and I consider myself a heavy user.
Edit:
As for using an extended battery, am I right in thinking that its only a 10-15% increase in capacity?

RTContent said:
I use francos with CM9. I always have everything switched on (Data, Sync, Wifi, GPS) and it only goes to about 50-40% after a days use and I consider myself a heavy user.
Edit:
As for using an extended battery, am I right in thinking that its only a 10-15% increase in capacity?
Click to expand...
Click to collapse
I have not had the extended battery yet, I will let you know when I get it. Do you change anything in Francos's kernel? I had a terrible experience. Isn't CM9 just a nightly release? Stable?
What radio are you using? I'm on the 4.04 radio

Hi guys, new here. I'm on the same boat as you on the battery, I'm running AOKP25 with Franco Kernel 18... I run a Hyperion 2000mAh battery and get about 8 hours with normal use , WiFi on, GPS off, Screen Brightnes on Auto, some whatsapp, emails, a couple of calls, a bit of browsing, and about an hour worth of reading in the kindle app... I know this should last longer... any ideas?
I can't post pic of the battery usage because I'm new but it basically is:
Screen: 57%
Android OS: 26%
Voice Calls: 4%
Phone Idle: 4%
Cell Standby: 3%
Browser: 2%
MediaServer: 2%
Android System: 2%
Thanks,

loveubuntu said:
I have not had the extended battery yet, I will let you know when I get it. Do you change anything in Francos's kernel? I had a terrible experience. Isn't CM9 just a nightly release? Stable?
What radio are you using? I'm on the 4.04 radio
Click to expand...
Click to collapse
I'm on the latest European radio (cant remember the code).
No I don't change anything in francos, but you can if you want to boot it some more.
And yes CM9 is just a nightly but super-stable still in my experiences, definitely worth trying for a week or two.

I'm on a gsm nexus stock battery running codename with francos kernel. 18.4. I just had a super heavy day, 12 hours and I'm down to 13 percent. 3 hours screen time plus 3 hours playing music with poweramp while the screen was off. No wifi - 3g hspa all day. Kernel set to 700/1000 conservative. Running juice defender on aggressive. 1 push email and one email set for once every hour.
If you are not getting acceptable battery life after running a custom rom and kernel with juice defender (not even sure if it helps) then download cpu spy and see if you are making it to deep sleep. 99 percent of the time it is an app.
Sent from my Galaxy Nexus using Tapatalk

Maguire11 said:
I'm on a gsm nexus stock battery running codename with francos kernel. 18.4. I just had a super heavy day, 12 hours and I'm down to 13 percent. 3 hours screen time plus 3 hours playing music with poweramp while the screen was off. No wifi - 3g hspa all day. Kernel set to 700/1000 conservative. Running juice defender on aggressive. 1 push email and one email set for once every hour.
If you are not getting acceptable battery life after running a custom rom and kernel with juice defender (not even sure if it helps) then download cpu spy and see if you are making it to deep sleep. 99 percent of the time it is an app.
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
Thanks for the suggestions. I do also think there is something that is causing this. I do get a heated screen also at times. I am running the FA02 for both CDMA and LTE which is the latest radio. I did change to franco's kernel but may go back to CM's stock if I don't find anything.
Also, I'm on 4G 24/7. No 3G area where I live and work anymore (Chicago) which is great but I think it eats up battery. Will report my findings after cpu spy.
Used 10% in 1 hr and 30 minutes.

Most definitely suggest CPUSpy. Another option is BetterBatteryStats to find out what has your device in a partial wakelock. I had an issue with my Desire Z prior to moving to the Galaxy Nexus where a piece of software attempting to access the GPS would get stuck in the background, and cause a partial wakelock. Going from 20+ hours of usage down to ~11 was a bit of a downer, but BetterBatteryStats helped me find the problem.

My battery is pretty bad too. I'm running Apex (latest) and the lean kernel (latest).
This is just from a few texts and emails:
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I have frozen the maps app as well ( this was a major battery drain as it would constantly reopen) but it only gave me ~1 hour more.
Thinking of swapping out for CM9.
Sent from my Galaxy Nexus using XDA App

Mine is still crazy bad...today I got 6 and a half hours of battery with even less activity as yeterday...I installed CPUSpy and mine does go into deep sleep state ,so nothing is keeping it awake...I'll update to AOKP26 and Franco Kernel 18.6 and report back...

Chaosin1983 said:
Mine is still crazy bad...today I got 6 and a half hours of battery with even less activity as yeterday...I installed CPUSpy and mine does go into deep sleep state ,so nothing is keeping it awake...I'll update to AOKP26 and Franco Kernel 18.6 and report back...
Click to expand...
Click to collapse
Try running Codenamed Android and Franco Kernel.. I'm on my second day with this setup, and I'm really getting impressed. Running the stock battery. I have an extended one waiting to install once I've maxed out usage with the stocker.

Instead of starting a new thread I thought I would add to this one. My battery life just went from acceptable to abysmal and I also don't know why. I'm running latest Codename ROM with latest Franco kernel along with Gapps from 2/18. Kernel was installed after wiping cache/dalvik. I am lucky to get 12 hours without even touching the phone. Here are some screen grabs:
Please help me if you can!!

I'm no expert on radios but it looks like your signal sucks (all yellow) which can cause an insane drain on battery. Download cpuspy and make sure you are getting to deep sleep(your graph looks like you are watching a movie or 3) . My battery graph looks similar to yours when I use my phone constantly.
Sent from my Galaxy Nexus using Tapatalk

Sorry I didn't see that you have already downloaded cpu spy. My next thought would maybe it's just your connection. Try looking into flashing newer radios or disabling lte/4g, your area may just not be good for it.
Sent from my Galaxy Nexus using Tapatalk

Maguire11 said:
Sorry I didn't see that you have already downloaded cpu spy. My next thought would maybe it's just your connection. Try looking into flashing newer radios or disabling lte/4g, your area may just not be good for it.
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
I usually have good LTE coverage but I'll try tomorrow with it disabled. Also if I am using WiFi, will LTE still drain the battery?

skottema said:
Instead of starting a new thread I thought I would add to this one. My battery life just went from acceptable to abysmal and I also don't know why. I'm running latest Codename ROM with latest Franco kernel along with Gapps from 2/18. Kernel was installed after wiping cache/dalvik. I am lucky to get 12 hours without even touching the phone. Here are some screen grabs:
Please help me if you can!!
Click to expand...
Click to collapse
Your signal is trash and you're having wakelocks

martonikaj said:
Your signal is trash and you're having wakelocks
Click to expand...
Click to collapse
Maybe I'll try a new radio - I'm still on the original. Is there any other program besides Better Battery stats to find wakelocks?

Ran CM nightly with Franco's latest kernel and had some improvements but the battery on this thing is nothing compared to my extended Thunderbolt. I guess I was spoiled by that huge battery. How about CM's kernel? Anyoone has an opinion on that?
Having just the screen on will eat the battery at a 10-15% per hour. Using the phone, browsing XDA site, playing a game, using the Facebook app, or basically doing anything else eats the battery at even a higher rate. I don't understand when people say they are a heavy user and have 45% after 10 hours.Ccan't see that happening!!!
I'm using Juice Defender on aggresive, bought the BetterBattery Stat and nothing seem out of the ordinary, and CPUspy says that deep sleep is achieved when it is supposed to (over night 95% or more). I just think that this phone is a battery hog. I guess it's time to buy some spare batteries and an external charger. Any thoughts?

give this a try, it helps me a lot
i'm doing almost 24h on 4.0.2, can't wait for 4.0.5 or whatever
JuiceDefender - battery saver - Apps on Android Market

loveubuntu said:
Ran CM nightly with Franco's latest kernel and had some improvements but the battery on this thing is nothing compared to my extended Thunderbolt. I guess I was spoiled by that huge battery. How about CM's kernel? Anyoone has an opinion on that?
Having just the screen on will eat the battery at a 10-15% per hour. Using the phone, browsing XDA site, playing a game, using the Facebook app, or basically doing anything else eats the battery at even a higher rate. I don't understand when people say they are a heavy user and have 45% after 10 hours.Ccan't see that happening!!!
I'm using Juice Defender on aggresive, bought the BetterBattery Stat and nothing seem out of the ordinary, and CPUspy says that deep sleep is achieved when it is supposed to (over night 95% or more). I just think that this phone is a battery hog. I guess it's time to buy some spare batteries and an external charger. Any thoughts?
Click to expand...
Click to collapse
Heavy users do not get 10 hours of use with 45 percent left so don't believe people who say that.. At most that is moderate use.
Sent from my Galaxy Nexus using Tapatalk

[Q] Terrible battery life?

I'm using AOKP b40 with the kernel that it comes with and I'm getting terrible battery life. I flashed Popcorn Kernel and Franco kernel once, but I had the problem where GTA III and other games would not start. I tried flashing the /bin/sdcard file but that borked the entire sdcard from mounting in Android so I had to reflash everything through adb.
I looked at Better Battery stats, and my phone is deep sleeping and nothing is wakelocking for longer than 5 minutes. I'm down to 67% after 15 minutes of screen on time and being unplugged for 2 hours. Is it just a bad kernel and should I try something else or is it my habits of using my phone? I'd like to get a lot more battery life out of this. I'm using the Verizon Galaxy Nexus with LTE turned off, GPS off, and Bluetooth off.
Thanks!

While my battery life is not as bad as yours, I too suffer from poor battery life. I can never squeeze any more than 2 hours of display on time at 45% brightness. I have tried AOKP and Slim ICS but they both give me mediocre battery life. I heard there was a franconkernel release which was by far one of the best released (r158?) I'm beginning to think I have a faulty battery as some people manage to get 4 hours of display time with descent standby.
Sent from my Galaxy Nexus using Tapatalk 2

Alexithymia2010 said:
I'm using AOKP b40 with the kernel that it comes with and I'm getting terrible battery life. I flashed Popcorn Kernel and Franco kernel once, but I had the problem where GTA III and other games would not start. I tried flashing the /bin/sdcard file but that borked the entire sdcard from mounting in Android so I had to reflash everything through adb.
I looked at Better Battery stats, and my phone is deep sleeping and nothing is wakelocking for longer than 5 minutes. I'm down to 67% after 15 minutes of screen on time and being unplugged for 2 hours. Is it just a bad kernel and should I try something else or is it my habits of using my phone? I'd like to get a lot more battery life out of this. I'm using the Verizon Galaxy Nexus with LTE turned off, GPS off, and Bluetooth off.
Thanks!
Click to expand...
Click to collapse
Five minutes of keep awake is a lot for two hours.

I'm looking at Kernel Wakelock in BetterBatteryStats and it says PowerManagerService for 49 minutes. I'm at 54% now. I've been playing cached music for about an hour now with Google Play. Is there any more information I can give to see if I can rectify this problem?

Power manager is just charging. I would say that is a real issue though it shouldn't have dropped that quickly. What governor what frequencies and under volted?
Sent From My Sprint Galaxy Nexus

I'm going to try with FrancoKernel and getting the sdcard file working properly tonight and see if it makes a difference. I leave it on overnight, it deep sleeps, but i still lose a good 15% battery. It's a bit ridiculous.

Do you turn data off? Do you have things that sync. Do you know if these apps sync even?
Sent From My Sprint Galaxy Nexus

ÜBER™ said:
Do you turn data off? Do you have things that sync. Do you know if these apps sync even?
Sent From My Sprint Galaxy Nexus
Click to expand...
Click to collapse
I don't turn data off, I keep 3G on. I have Facebook that syncs every 4 hours. My Google account syncs (not sure if there are intervals set elsewhere), and weather every 6 hours. Nothing else syncs to my knowledge.
EDIT: I didn't see your questions about my CPU settings. 1200MHz max, 350MHz min, interactive governor. I haven't touched voltages.

Okay if you can't live without sync your battery will always drain. Also change your governor to on demand or lazy if available. I usually just refresh everything manually and I get over 15 hours and 5 hours of display. Over wifi and maybe 2.5 of display over my terrible 3G speeds.
Sent From My Sprint Galaxy Nexus

ÜBER™ said:
Okay if you can't live without sync your battery will always drain. Also change your governor to on demand or lazy if available. I usually just refresh everything manually and I get over 15 hours and 5 hours of display. Over wifi and maybe 2.5 of display over my terrible 3G speeds.
Sent From My Sprint Galaxy Nexus
Click to expand...
Click to collapse
I'll give turning off sync a shot ... and changing the governor. I'll experiment tonight though. Thanks!

Strange......I'm in aokp b40 with popcorn kernel and the aggressive governor and just got a whole hour of screen time and was only down to 75%. It must be in app or something. Whenever that happens to me I do a factory reset and then reflash a different rom.

Alexithymia2010 said:
I'll give turning off sync a shot ... and changing the governor. I'll experiment tonight though. Thanks!
Click to expand...
Click to collapse
Glad to help. Yeah interactive is a heavy battery drainer. I like it's fluidity but it's not worth the amount of battery it drains I remember seeing this one day and changed to on demand and haven't had any drain issues since.
Sent From My Sprint Galaxy Nexus

ÜBER™ said:
Glad to help. Yeah interactive is a heavy battery drainer. I like it's fluidity but it's not worth the amount of battery it drains I remember seeing this one day and changed to on demand and haven't had any drain issues since.
Sent From My Sprint Galaxy Nexus
Click to expand...
Click to collapse
Thanks for that advice! =D
Would you happen to know what governor stock 4.0.4 uses? It seems that my bad battery life began happening after I flashed AOKP.
Sent from my Galaxy Nexus using Tapatalk 2

infazzdar said:
Thanks for that advice! =D
Would you happen to know what governor stock 4.0.4 uses? It seems that my bad battery life began happening after I flashed AOKP.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
More than likely a variant of on demand. I'm not too sure. I never ran stock
But yeah interactive give keeps the cpu awake more. My favorite govs thus far are on demand, lazy, and pegasusq.
Sent From My Sprint Galaxy Nexus

ÜBER™ said:
More than likely a variant of on demand. I'm not too sure. I never ran stock
But yeah interactive give keeps the cpu awake more. My favorite govs thus far are on demand, lazy, and pegasusq.
Sent From My Sprint Galaxy Nexus
Click to expand...
Click to collapse
Hopefully using ondemand fixes my battery issues. Otherwise it's back to stock for me. (Shudder)
Sent from my Galaxy Nexus using Tapatalk 2

infazzdar said:
Hopefully using ondemand fixes my battery issues. Otherwise it's back to stock for me. (Shudder)
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Oh it will. I had the same experienced when I first rooted I noticed an abnormal amount of heat and was using interactive. my battery would drop like a rock. Changed it to Ondemand and I couldn't feel anymore heat... especially while on the charger.
Sent From My Old Epic 4g via XDA Premium

I too am getting terrible battery life please see below...this is with an extended battery and I use 4g probably 2% of the day, and I use autobrightness...Im running AOKP w/ Franco Kernal.....HELP...every thread there is someone boasting and bragging about getting 2 days of battery, please show me the way!
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mtva24 said:
I too am getting terrible battery life please see below...this is with an extended battery and I use 4g probably 2% of the day, and I use autobrightness...Im running AOKP w/ Franco Kernal.....HELP...every thread there is someone boasting and bragging about getting 2 days of battery, please show me the way!
Click to expand...
Click to collapse
oh long was your screen time, and turn your wifi when not on a network. I also noticed facebook is installed, maybe try something else. That app eats up alot in the background

mtva24 said:
I too am getting terrible battery life please see below...this is with an extended battery and I use 4g probably 2% of the day, and I use autobrightness...Im running AOKP w/ Franco Kernal.....HELP...every thread there is someone boasting and bragging about getting 2 days of battery, please show me the way!
Click to expand...
Click to collapse
You need to post your screen on time.
And uninstall Facebook.
Sent from my GT-I9300 using Tapatalk 2

hol up, hol up....u mean to tell me I cant to use Facebook on this phone????? Im kind of mad I sold my Droid 3 to my mom....

JB vs ICS Battery Life Discussion.

So I thought I would talk about the battery life between JB and ICS. Right now, it seems I am getting less battery life with JB. Anyone else feeling the same way?
I can't get 2 hours of screen time since JB, I was 4+ with ICS, doing the same things daily. Or is it just me?

Same here... around 3.5 hours on WiFi. Where I was getting 5 hours. not just you. Something interesting though. In log cats... it seems to being freeing up memory ALOT. GC_CONCURRENT happens after just using the phone for a simple task such as opening the settings.
Sent From My Toro+ via SkyBlue Tapatalk

Currently I am getting 5+ Hours on JB with stock OTA with all original but I just switched to Franco Kernel and underclocked so I have yet to see batterylife with tht.
EDIT
-Wifi is always on for me and im constantly searching the web, youtube videos, 3d applications, games etc..

ÜBER™ said:
Same here... around 3.5 hours on WiFi. Where I was getting 5 hours. not just you. Something interesting though. In log cats... it seems to being freeing up memory ALOT. GC_CONCURRENT happens after just using the phone for a simple task such as opening the settings.
Sent From My Toro+ via SkyBlue Tapatalk
Click to expand...
Click to collapse
Possibly result of Project Butter. The increase in frame rates etc, and what you have seen in log cats, is probably putting more strain on the battery than did ICS.
The increase in performance means decrease in battery I assume.

XxKillerKev7xX said:
Currently I am getting 5+ Hours on JB with stock OTA with all original but I just switched to Franco Kernel and underclocked so I have yet to see batterylife with tht.
EDIT
-Wifi is always on for me and im constantly searching the web, youtube videos, 3d applications, games etc..
Click to expand...
Click to collapse
Same here, fresh Bigxie OTA install last night, all stock today, didn't get more than 2 hours of screen and hour of talk.

jzero88 said:
Possibly result of Project Butter. The increase in frame rates etc, and what you have seen in log cats, is probably putting more strain on the battery than did ICS.
The increase in performance means decrease in battery I assume.
Click to expand...
Click to collapse
The problem with that is... my kernel developer... was delving into my logcats and couldn't get his phone to spit the same results. I also notice an abnormal amount of heat which is result of it staying in 1200mhz too often. So something IS overworking the CPU question is... WHAT?.
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jzero88 said:
Same here, fresh Bigxie OTA install last night, all stock today, didn't get more than 2 hours of screen and hour of talk.
Click to expand...
Click to collapse
Ya but I have 10+ hours battery 5+ Screen Time On

XxKillerKev7xX said:
Ya but I have 10+ hours battery 5+ Screen Time On
Click to expand...
Click to collapse
I can't even manage that...
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XxKillerKev7xX said:
Currently I am getting 5+ Hours on JB with stock OTA with all original but I just switched to Franco Kernel and underclocked so I have yet to see batterylife with tht.
EDIT
-Wifi is always on for me and im constantly searching the web, youtube videos, 3d applications, games etc..
Click to expand...
Click to collapse
5 hours of what? Screen on time? If so, could you please show a screenshot?

XxKillerKev7xX said:
Ya but I have 10+ hours battery 5+ Screen Time On
Click to expand...
Click to collapse
Same here. After ten hours that's all I am able to get. I'm really considering going back to ICS .
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bgdxv said:
5 hours of what? Screen on time? If so, could you please show a screenshot?
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Click to collapse
I was easily getting 4+ on ICS with Trinity.
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ICS
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JB
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Ok so here are my results. Some screenshots will follow soon.
screen brightness around 20%
mobile data OFF all the time and only 2G connection selected
Wifi ON about half the time
ALL sync off
I used the phone mostly for browsing and playing youtube videos, just a little 3d gaming
In these conditions, I got 4 h 53 min screen on time, in 10 h 30 min total on battery charge.
Using all stock JB 4.1.1
I am totally in the dark here. Is this a good result or not really?

bgdxv said:
Ok so here are my results. Some screenshots will follow soon.
screen brightness around 20%
mobile data OFF all the time and only 2G connection selected
Wifi ON about half the time
ALL sync off
I used the phone mostly for browsing and playing youtube videos, just a little 3d gaming
In these conditions, I got 4 h 53 min screen on time, in 10 h 30 min total on battery charge.
Using all stock JB 4.1.1
I am totally in the dark here. Is this a good result or not really?
Click to expand...
Click to collapse
Not very stellar if you never have mobile data on and only connect to 2G, with WiFi on 1/2 the time, and no sync. I'm not at all surprised by those results.

With JB : +3h
Better battery drain than ICS for me
I'm in stock JB, all day with data connection (3G), screen 50%, no GPS, no Wi-Fi (or sometimes).

I never got more than 3 - 3.5 h of screen time on a full day use of the phone. That's exactly what I get now, nothing has changed.

jzero88 said:
So I thought I would talk about the battery life between JB and ICS. Right now, it seems I am getting less battery life with JB. Anyone else feeling the same way?
I can't get 2 hours of screen time since JB, I was 4+ with ICS, doing the same things daily. Or is it just me?
Click to expand...
Click to collapse
I'm assumning you are not overclocking the CPU. However, it varies from build to build. In my experience with 4.0.4 ICS yakjuzs build the CPU was set at 1200 MHz which casued the phone to overheat and the battery only last for 6 hours. Yakju build ICS and JB the cpu is set at 700MHz which made my battery last for 16 - 18 hours. Now there are other factors too, for example screen brightness, 3G will consume battery power, brightness takes the most of battery power. So check which build you are using and see the CPU settings, I use quadrant standard app and saw the settings under system information.

amdkalban said:
I'm assumning you are not overclocking the CPU. However, it varies from build to build. In my experience with 4.0.4 ICS yakjuzs build the CPU was set at 1200 MHz which casued the phone to overheat and the battery only last for 6 hours. Yakju build ICS and JB the cpu is set at 700MHz which made my battery last for 16 - 18 hours. Now there are other factors too, for example screen brightness, 3G will consume battery power, brightness takes the most of battery power. So check which build you are using and see the CPU settings, I use quadrant standard app and saw the settings under system information.
Click to expand...
Click to collapse
dude... you are confused. The processor that is mounted on our gnex has the stock frequency of 1200 mHz. Having it at 700 would be a serious and probably dangerous underclocking

Yep same problem ,
with ics I averaged about 5hrs of screen time
with jb only 3hrs =(

With ICS 4 hrs + screen time and
With JB 2 1/2 hrs.
Became worse.

[Searching] Rom with good Battery Life ?

Hallo !
My battery Life is annoying me..! And I don't know what to do...
Im on Stock Rom XML8 atm. (ROOTED, CWM NOT installed). I was on Rebel Rom, ICS etc. before, and the battery life was awfull..!
I flashed stock Rom XLM8.. thaught Stock would have a better battery life time. But it does not..!
Today my wonder really ****** me off..! (sorry for the language..) So Im gonna tell you how I used my phone.
Today's use of my Wonder:
I wake up at 6 am.
My wonder wakes me up. At this time my wonder is at 100% Battery Charge! (It's charging while Im sleeping. about 6-8h)
I go to school, need about 20-30minutes, im listening to music on the way.
After that, I kinda don't use my phone, cause I have classes. I only check the time some times.
During the breaks I don't really use it, sometimes listening to music, check facebook/whatsapp sometimes etc.
But Im not playing hard games..! Not at all !
Well than I had to work on a Projekt, about 4 hours.
When I finished my work, I wanted to call my dad to pick me up, and the battery was at 6%..!
I mean, this isn't normal anymore ! How can it be ?
This is really annoying me !
Meanwhile I have like 6% battery, a good friend had 75% on his HTC Desire HD! And he was listening to music even more than me !
So I think it isn't normal !
What can I do ?
I only listened to music today ! All at all about 70 min. of listening to music ! Why is my battery drain so high ?
The weather isn't refreshing not at all. I do it manually.
And nothing is refreshing or working while it's in sleep mode..!
I just dont get it, and want to know what I can do about that...
Any Rom is working with great battery Life Time ?
I don't even care about the Design anymore..!
The battery is most important for me.
Somebody help..?
PS. I had even locked it down to 1GhZ..

First Check with CPU Spy if deep sleep works normally.
With yor usage profile, you should get about 80% of time spent in deep sleep.

Turn off 3G!
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Because you changed rom's, what really helps is an app called battery calibration.
It actually works... it increased my battery time by 16 hours -YES- Sixteen hours.
The app is free on the android market.
-+- Also a good tip is to change you cpu to ondemand
-Min 122mhz
-Max 1ghz
Works fine for me
EDIT: actually it helped by 31 hours, just the battery calibration, ridiculously good.
-I don't know why changing ROM'S messes up my battery.

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this was before calibration.
this is AFTER. my screen is always on full brightness.
As you can see my battery still had 8% left

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fayosi said:
View attachment 1245564
this was before calibration.
View attachment 1245572
this is AFTER. my screen is always on full brightness.
As you can see my battery still had 8% left
Click to expand...
Click to collapse
maybe there is something wrong with the battery....

Thanks for all the responses
Appreciate
fayosi said:
Also a good tip is to change you cpu to ondemand
-Min 122mhz
-Max 1ghz
Works fine for me
Click to expand...
Click to collapse
Well im always using exactly that setup!
But now I underclocked it to 100-200mhz if screen is locked.
So it wont do alot if its locked.
Going to sleep now; right after I tested the calibration app.
Gonna test my set up tomorrow; and I'll write here tomorrow.
I dont want to turn off 3G/H; cause than I wont receive msgs..! Thats one of the most important things for me..! Good tip; but not a possibility for me.
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To do the calibration you need to calibrate the battery when its full.
So open the app with your charger still connected then press calibrate.
Tip- If you turn off your mobile data, it DOES NOT mean you do not receive any calls.
Your calling radio is on even though your data is off.
So if you turn off your 3g data it still means you can receive calls and text but your internet will not work until you turn it back on.

Turn off brightness. It saves battery drain too.

Anyone have tried battery calibration app on google play? Can anyone tell me how my volt that it show on your phone. I read the info on the google play and it say the normal volt should be 2+++ mV. My phone only show 4mV. Please help. Thanks !
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Is or phone like a rugby smart
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taylormade772 said:
Is or phone like a rugby smart
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Click to expand...
Click to collapse
What r u trying to say?
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I know, but I receive msgs. On whatsapp etc.
Through the Internet. Without 3G I won't receive them.
I underclocked to 100-200MhZ while screen is locked; 100-1000MhZ while screen is on.
Plus batterycalibration.
Lets see what will happen till this evening.
I'll write over here later
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azrieqb said:
Anyone have tried battery calibration app on google play? Can anyone tell me how my volt that it show on your phone. I read the info on the google play and it say the normal volt should be 2+++ mV. My phone only show 4mV. Please help. Thanks !
Sent from my GT-I8150 using xda app-developers app
Click to expand...
Click to collapse
Same with my, on my Screen it sais 4mV too...
Different phones, different datas, volts etc.

Okey, after about 12 hours of Using it today, I want to report it..
First I want to show some Screenshots:
These are some Screenshots I made during the Time.
It got better for sure !
But is there a way to increase it a bit ..?
And one Question:
At the Sixth Screenshot, the battery went down, straight down ! Just like something is falling !
What the heck is that ? I've never seen something like that..!
I mean I've seen some guys, using they're phone about the same as me, and their battery is living 2 days and 5 hours.
My Battery is at 16% now. As you see at the Screenshot.
It's good, I like how it improved. I don't know if it's cause of the battery calibration, or the underclocking in the lockscreen.
Any Tips ?
Thank you all so far

Best option, change your rom. I would recommend either cow or mutant. Baterry lasted 2 days with occasional gaming and music
Sent from my GT-I8150

+1 for Cow!
I'm using Bionic Cow 2, and I can choose between: Snappier performance, same battery life, or; Same performance, longer battery life.
Of course, I'm using the wonderful "CPU Tuner" app to cap the frequency when screen off. And I make sure I'm using the "OnDemandX" governor.
That said, I also have to warn the OP that after 9 months of continuous usage, the battery starts to degrade. In my case, after 9 months, the battery is oh-so-awful, it needs to be charged 3-4 times per day! A quick trip to the service center and changing hands of 15 USD, got me a brand new battery that lasts me a full day.
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Thanks for that;
But one question;
Umm, are you using BionicCow 2 OC, or non OC?
Gonna flasg today when I get home; and report my battery again.
This time I set up JuiceDefender, too.
Let's see
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Busted. said:
Thanks for that;
But one question;
Umm, are you using BionicCow 2 OC, or non OC?
Gonna flasg today when I get home; and report my battery again.
This time I set up JuiceDefender, too.
Let's see
Click to expand...
Click to collapse
Bionic Cow 2 Non-OC. I honestly find 1.4 GHz to be more than what I need, since I dislike racing games (or other 'twitchy' games requiring oodles of CPU power).
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