Database Info

12 hours on battery?

Hey all,
I'm averaging about twelve to thirteen hours on battery. Is that normal?
I only let Gmail sync and I go stretches without even using the phone. Never watch videos or anything intense.
Sent from my Nexus S using XDA App

I can make 18-24 hours with the usage above,i.e, minimal.
Sent from my Nexus S using XDA App

Battery life was ~12 hr. for me on stock ROM with no special attention paid to what's syncing. Since then I've gone to a custom ROM and kernel that allow under-volting the phone to extend battery life. I haven't measured yet but I'd guess I'm in the 16-20 hr. range now.

I'm running 2.3.4 on a custom ROM. I wonder what I'm doing wrong?
Sent from my Nexus S using XDA App

Hog Milanese said:
I'm running 2.3.4 on a custom ROM. I wonder what I'm doing wrong?
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
well if you're on a custom rom, then things vary. me myself i get awful drainnage on some and excellent on others. one thing you could do is that you could try using netharcy's kernels or the UV trinity one. be sure to re-calibrate your battery and wipe battery in recovery.
(you dont have to recalibrate battery everytime u flash a rom but i just recommended it so that you can monitor your battery usage more effectively).

I'm easily achieving 24-30 hours with my Nexus S with 9 hours on display, 4 hours of music-listening, 2 hour of voice calls, 4 hour wi-fi browsing.
Running 2.3.4, Netarchy 1.3.1 CFS, zipaligned deodexed custom ROM. 3G is off though, because in my country (and my carrier) 3G doesn't work on the 900mhz band the Nexus S uses.

What is this Netarchy you speak of? My ROM is deodexed and zipaligned.
Sent from my Nexus S using XDA App

Netarchy is a kernel for the phone.
See here: http://forum.xda-developers.com/showthread.php?t=936219

Netarchy http://forum.xda-developers.com/showthread.php?t=936219 is a replacement for the stock kernel, and it allows under-volting. The idea is to run the phone CPU at a lower voltage, thereby extending battery life. Under-volting has to be included in the kernel when it's compiled, i.e. you can't do it with just any kernel. Trinity UV is another kernel that does UV.
The easiest way to configure the degree of under-volting using Netarchy is Jonathon Grigg's new Proton app http://forum.xda-developers.com/showthread.php?t=1091382

Okay, I flashed the (stable) Netarchy kernel for my phone and it seems twice as "snappy" but haven't been able to test the battery life yet. I cleared the battery stats in Recovery and am charging it right now. We'll see!...

Hog Milanese said:
Okay, I flashed the (stable) Netarchy kernel for my phone and it seems twice as "snappy" but haven't been able to test the battery life yet. I cleared the battery stats in Recovery and am charging it right now. We'll see!...
Click to expand...
Click to collapse
Remember, after the first clearance of the battery stats, the data needs to be re-populated, so you won't have good battery life until after a few charge cycles. Let your battery drain dead, charge it to 100% without interrupting it, then repeat this process somewhere the next few days.
Report back after at least 4 full charge cycles (from 0-100%, not necessarily until your battery is depleted, you can charge at say 70% to 100% and that counts as 30% Each 100% is a complete charge cycle)

hey guys, my phone is in stock, rooted, and I also getting 12-13 hours under medium/heavy use, I want to try this kernel, so what I have to do is download the zip (already did) file and apply it on the recovery menu right?

and what happens when I want to the original kernel?
ps: sorry 4 the noobness... lolz

Using Netarchy and undervolting 25mw my phone can standby 24ish hours on one charge. I can go 12 hours of heavy usage (4 hours screen time etc).

thedauntlessone said:
Using Netarchy and undervolting 25mw my phone can standby 24ish hours on one charge. I can go 12 hours of heavy usage (4 hours screen time etc).
Click to expand...
Click to collapse
well that's pretty much what I did yesterday without the netarchy mod. I disconnected my cellphone at 12md, I listened like 4 hours of music, and also checked my email, twitter and facebook, many times, (I was in class so I was super-bored) all in wifi. and with my 3g activated. I think I'm going to disable the 3g when I'm on wifi. I think is kinda logical.

Buried said:
I'm easily achieving 24-30 hours with my Nexus S with 9 hours on display, 4 hours of music-listening, 2 hour of voice calls, 4 hour wi-fi browsing.
Running 2.3.4, Netarchy 1.3.1 CFS, zipaligned deodexed custom ROM. 3G is off though, because in my country (and my carrier) 3G doesn't work on the 900mhz band the Nexus S uses.
Click to expand...
Click to collapse
That's INSANE! :O
Mine never achieved half as good as that! my 18 hours include only 2 or 2 1/2 hours of display-on time and usually around half an hour of music!
Are you doing an overboard UV to achieve that?

Once again this is confusing because we have both S and 4g phones here, and they use different technologies and have differing battery lives.
I do hope they have separate forums for these soon...
Anyway, my Sprint 4G got 10 hours tops, usually more like 8 with average usage. (calls, gmail sync, internet, etc. throughout the day.)

Going on 18 hours today on my S4G with moderate use. Calls, texts, browsing, music. My battery is reporting 18% left right now. Was also without service for nearly an hour (inside a building) and we all know what that does to your battery.
Sent from my Nexus S 4G using XDA Premium App

I have the european version of the SNS with LCD.
On stock 2.3.4 (not rooted or anything) with wlan on and gmailsync i theoretically have standbytime 12days +
My (rooted) SGS before with AMOLED had 30hours standby with the same settings...

9 hour display time? I doubt its true maybe yours stats are bugged happens to me
Sent from my Nexus S using XDA App

CM7 battery life Troubleshooting thread

I am loving this rom, but also having HORRID battery life, I am literally dropping 10% every 90 minutes with an extended battery.
27% Cell Standbye
26% Bluetooth
19% Display
Now I keep reading that these might be false readings, but I keep reading this as a response to those having **** for battery life... so maybe they are not false?
Anyone having good battery life show readings like this? Those with bad battery life, what are your readings?

I'm running the CM7 w/the 2.5 radio - I'm in a 100% full time 4G area, but seem to have worse battery life when the 4G radio is on, so I just keep the phone on 3G - if I need the faster data I can always turn it on and off.
I'm running the stock kernal, no overclocking or setcpu type stuff going on.
Would like to hear from folks running this ROM w/killer battery life, what are your settings, tweaks, etc. Please specify if you're running an MR1 or Mr2/2.5 version and/or running the latest OTA 2 radio that just came out like yesterday.
I just turned off my FB sync (I forgot about that). I don't have gmail set up to sync automatically either.
I'm going to do this procedure a little later today and see if it helps, this is for the EVO, but, ya know....
34. "Calibrate" battery - (1) Turn device ON, charge it for 8 hours (or until LED turns green), (2) unplug and turn it OFF, plug it back in and charge for 1 hour (or until LED turns green), (3) unplug and turn it ON, wait 2 minutes, turn it OFF, plug it back in, and charge for 1 hour (or until LED turns green), (4) unplug it, turn it ON, and use normally.
Anybody else try this?
today will be my first full day of work use w/this ROM so we'll see what happens.

Best to keep 4g off if not using it. Also, turn Bluetooth off when not in use.
Sent from my ThunderBolt using Tapatalk

i had horrible battery life the first day - then it got better. then i flashed mr2 official and battery life is really solid. getting like 15-20 hrs with 4g always on, bluetooth on sometimes. one important thing is having a custom lighting table which i will post later.

Bassdj427 said:
Best to keep 4g off if not using it. Also, turn Bluetooth off when not in use.
Sent from my ThunderBolt using Tapatalk
Click to expand...
Click to collapse
I have never, nor do I intend to ever do this. I got an extended battery for a reason. I can go all day and then some on the official roms, and all of the Sense roms.
I am not new to CM7, I have run it on both an Eris, and an Incredible. Both devices got FAR better battery life on CM7.
I am not complaining about this rom, or Slayhers hard work. I simply want to gather information so that we may help him trouble shoot.

Immediate wiper batt stats at 100% this morning on my extended batter will report back with usage and level details
Sent from my ThunderBolt using XDA App

stayin100 said:
Immediate wiper batt stats at 100% this morning on my extended batter will report back with usage and level details
Sent from my ThunderBolt using XDA App
Click to expand...
Click to collapse
This is exactly what I did lol, I had lost 10% in the first 90 minutes, now I am at 58% at 5 hours. I have been streaming google music for 2 hours of that 5 though. I would guess I should have seen an increase in battery usage, but have not.

The battery readings are wrong, I get a full day on 4G with my stock battery and see those numbers for cell standby etc. I use lean kernel though
Sent from my ThunderBolt using XDA Premium App

do you see those numbers for BLUE TOOTH though? We know good and well some numbers are fake, but that does not mean all.
FYI I am now at 37% and 7 hours and 7 minutes... I have not used google music since the last post and I am seeing the exact same battery drain as when I was using it.

I have absolutely horrible battery life when I'm at work (which is basically a bunker). On a normal day, my battery will be dead within 6 hours just sitting there on my desk.
However, when I am at home (great 4G signal), I see my device getting upwards of 16 hours with moderate use.
I will also say that since I upgraded to the most recent radio, I have been having much better battery life at home. Additionally, my phone has stayed much cooler with the most recent RC + new radio combination.

I heard if you change the render fx to n1 calibrated, then you will get like 1 hour extra of battery life. You can change the render fx by going to cyanogenmod settings.

11h32m11s on extended battery 69% left
The other numbers have to be wrong. Theres no way cell standby is the number one battery user.

my cell standby is also showing 30% with the new OTA 2 radio.

I switched to dream kernel (have not wiped battery stats) and am now at 88% after two hours, that puts me at 6% per hour verses yesterdays 10.

_Viper_ said:
I heard if you change the render fx to n1 calibrated, then you will get like 1 hour extra of battery life. You can change the render fx by going to cyanogenmod settings.
Click to expand...
Click to collapse
only works for AMOLED screens.
edit: to be clear, it only saves battery on AMOLED.

so what i have found is that after installing dream kernel and messing with the governor settings... along with being connected to wifi. my battery life has improved tremendously. i wiped battery stats this morning after a full charge and didnt notice any change.. then i flashed the kernel and messed with gov. settings... after rebooting ive noticed a huge huge difference.. just my 2 cents for anyone who had battery issues like me

Yesterday I was able to choke out 20 hours while in a 4G area the entire time.
Running RC 1.2, Imoseyon's leanKernel extreme mode (extremely undervolted and OCd to 1.4GHz) and using the InteractiveX governor.
Also, I just happened to reboot and surprisingly it only took away 1% of my battery. Amazing considering whenever I did that on a Sense ROM, I'd experience a battery loss ranging from 7%-10%.

beeholtz said:
so what i have found is that after installing dream kernel and messing with the governor settings... along with being connected to wifi. my battery life has improved tremendously. i wiped battery stats this morning after a full charge and didnt notice any change.. then i flashed the kernel and messed with gov. settings... after rebooting ive noticed a huge huge difference.. just my 2 cents for anyone who had battery issues like me
Click to expand...
Click to collapse
What settings did you land on as best?

cpu is set max to 368 mhz(very low) but i can crank it up if im doing somethign like playing games or downloading and want speed. brightness is at about 15-20 percent. the dream kernel and mr2.0 radio have made a big diff too. the dream kernel made the biggest. usually when id power off or reboot id lose 6-10 percent same as someone else i saw post. now i lose maybe 1 percent which is a huuuuge difference considering you lose 10 percent just because you reboot. also i try to stay on wifi wherever i go. on 3g i def notice it drain quicker, but i am no expert and there are a lot of people on here who by far outexperience and outknowledge me(my new 2 words) so im sure other people have some suggestions

Morkai Almandragon said:
I am loving this rom, but also having HORRID battery life, I am literally dropping 10% every 90 minutes with an extended battery.
27% Cell Standbye
26% Bluetooth
19% Display
Now I keep reading that these might be false readings, but I keep reading this as a response to those having **** for battery life... so maybe they are not false?
Anyone having good battery life show readings like this? Those with bad battery life, what are your readings?
Click to expand...
Click to collapse
That is strange I am also using CM7 with an extended battery and still have 41% left after 14:56 on battery.
battery use does show
cell standby 31%
phone idle 19%
android system 19%
wifi 11%
dialer 10%
display 6%
voice calls 3%

[Q] Terrible battery life

Alright so my skyrocket is rooted with the faux kernel and sky ics 7.4 speed rom. My battery lasts me roughly until 6pm everyday when taken off the charger at 6am for school (obviously aren't using it during school) so that to me, is crap battery life for such a large battery capacity especially only using HSPA+ no LTE. cpu set at 1.5ghz uv -75mv, ondemand governer, screen off to 384mhz. Noticed Android System uses nearly as much battery as display, at minimum brightness.
Can anyone help me reduce this or give me any tips for better battery life?
in the pics below, i left my phone idle overnight after a 100% charge before going to bed at around 12am. woke up with the phone at 98%.
under moderate useage it will die 10%/45 minutes.
img138.imageshack.us/img138/7115/sc20120229175536.png
img822.imageshack.us/img822/237/sc20120229175551.png

rccar said:
Alright so my skyrocket is rooted with the faux kernel and sky ics 7.4 speed rom. My battery lasts me roughly until 6pm everyday when taken off the charger at 6am for school (obviously aren't using it during school) so that to me, is crap battery life for such a large battery capacity especially only using HSPA+ no LTE. cpu set at 1.5ghz uv -75mv, ondemand governer, screen off to 384mhz. Noticed Android System uses nearly as much battery as display, at minimum brightness.
Can anyone help me reduce this or give me any tips for better battery life?
in the pics below, i left my phone idle overnight after a 100% charge before going to bed at around 12am. woke up with the phone at 98%.
under moderate useage it will die 10%/45 minutes.
img138.imageshack.us/img138/7115/sc20120229175536.png
img822.imageshack.us/img822/237/sc20120229175551.png
Click to expand...
Click to collapse
I bought a external charging kit + spare battery package that samsung sells for around $40. An external charger (equivalent to charging your phone on AC while the power is turned off) is the best charging you can give your battery. The worst type of charging is charging your battery while the phone is on connected to a computer through USB.
Of course, who wants to charge with the phone turned off? That's why you should get this package. I never worry about charging my phone. When I'm running low, I just do a quick battery swap. A seriously annoying issue with this phone becomes a non-issue.
I also make sure I try to do a deep cycle charge. I always let it drain to around 5-15% before I swap batteries.

kind if irrelevant but this might be the first phone I might not root or mess with for a while 2nd day of use.stock everything and i'm running on 1 day and like 6+ hours on battery idk if that's the born or not but i'm not on lte either just thought I would share this lol
Sent from my SAMSUNG-SGH-I727 using XDA

derik.p said:
kind if irrelevant but this might be the first phone I might not root or mess with for a while 2nd day of use.stock everything and i'm running on 1 day and like 6+ hours on battery idk if that's the born or not but i'm not on lte either just thought I would share this lol
Sent from my SAMSUNG-SGH-I727 using XDA
Click to expand...
Click to collapse
derik, how often are you using your phone and do you have facebook or any apps pushing notifications?

I do have Facebook and the accuweather widget that auto updates also Yahoo email.use the browser a moderate amount sent and received a good 200 texts.about 2 hours of calls total and mess with settings and use this app..id say pretty moderate use but that's pretty good I think and i'm coming from the infuse
Sent from my SAMSUNG-SGH-I727 using XDA

rccar said:
Alright so my skyrocket is rooted with the faux kernel and sky ics 7.4 speed rom. My battery lasts me roughly until 6pm everyday when taken off the charger at 6am for school (obviously aren't using it during school) so that to me, is crap battery life for such a large battery capacity especially only using HSPA+ no LTE. cpu set at 1.5ghz uv -75mv, ondemand governer, screen off to 384mhz. Noticed Android System uses nearly as much battery as display, at minimum brightness.
Can anyone help me reduce this or give me any tips for better battery life?
in the pics below, i left my phone idle overnight after a 100% charge before going to bed at around 12am. woke up with the phone at 98%.
under moderate useage it will die 10%/45 minutes.
img138.imageshack.us/img138/7115/sc20120229175536.png
img822.imageshack.us/img822/237/sc20120229175551.png
Click to expand...
Click to collapse
I have a JuiceDefender profile that might be able to help you, send me a message. Also check my thread on the battery thing and see if it works for you.
I'd say that 12 hrs is pretty normal provided you don't shut down radios.
Sent from my SGH-T989 using Tapatalk

Try mhx's new rom 2.6, by far best on battery life. Seeing 16-26 hours based on people reviews...
Sent from my SAMSUNG-SGH-I727 using xda premium

My battery is also terrible i'm using an extended battery and now i can make 16hours of average usage
Inviato dal mio Galaxy Nexus usando Tapatalk

Stock kernel sux for on screen time. Use a custom kernel and undervolt. I was getting 8 hours on stock, k or I'm getting about 13 with heavy usage, so trust me when I say u don't need to flash a new rom, but a kernel is a must. Strongly recommend sky-kernel 009m by faux
Sent from my SGH-I727R using XDA

Anyone wanna tell me how to extract the JuiceDefender backup so I can share it?
Sent from my SGH-T989 using Tapatalk

If not mistaken if hit backup in JD it will put backup file on root of sdcard.. it does mine
Sent from my SAMSUNG-SGH-I727 using Tapatalk

icenight89 said:
Stock kernel sux for on screen time. Use a custom kernel and undervolt. I was getting 8 hours on stock, k or I'm getting about 13 with heavy usage, so trust me when I say u don't need to flash a new rom, but a kernel is a must. Strongly recommend sky-kernel 009m by faux
Sent from my SGH-I727R using XDA
Click to expand...
Click to collapse
I think I read somewhere that faux's kernels don't support Wifi tethering. Is this still true? Do other custom kernels have this problem?

I flashed the Paradox rom on the T989 forums with Faux's Skyrocket kernel and I didn't download System Tuner with this ROM (Just kept it the way it was) and it has zero lag and from 6 am to 2am the next night, I only went down to 32% so battery life is the most amazing I've had ever

I had a similar problem on my old captivate. I found a rogue app that was using a ton of battery. Like 74% of my battery. Bat stats said it was Android OS using it. Delete some of the recent apps you may have installed b4 you noticed the bad battery life. I am on SkyICS 7.4 my battery life is pretty good. The rogue app that I found was a game Pirates from Disney.
Sent from my SAMSUNG-SGH-I727 using XDA
Running SkyICS 7.4

I put up a thread with JuiceDefender profile for all. Check it out and let me know how it works.
Sent from my SGH-T989 using Tapatalk

12 hours isn't too bad for a Skyrocket.
On my phone, I'm rooted, running SkyIce ROM with Faux Kernel. My usage is as follows:
Display-64%
Android System-6%
Android OS-5%
Cell Standby-2%
I average around 10 hours of heavy (constant) use, and about 16 hours with normal use. I'm quite satisfied with the Skyrockets battery life. I've only had the phone for 10 days, so the battery is still settling in. It's much better than the battery life on the SGS II, which got around 8-11 hours.
Sent from my SAMSUNG-SGH-I727 using XDA Premium App

New Nexus S owner (i9020a) -- questions about battery life expectations

I bought a new Nexus S off eBay recently. It came with Android 2.3.4 but I ran the update.zip files to get it up to 4.0.4 and am now awaiting JB OTA. Plan to keep this thing completely stock for the time being, so I'm especially interested in battery expectations for a totally stock phone.
My phone came with some cheap-o third party battery. It's only 1400 mAh, and it is NOT the OEM Samsung battery. I'm getting HORRIBLE battery life with it. See attached screen shots, which show battery loss of nearly 7% per hour IN AIRPLANE MODE, WIFI OFF, PHONE NOT BEING USED AT ALL. You can also see that there were no wake locks, and that the phone was in deep sleep for 99% of time off battery. Yes, it was losing 7% per hour even in that state.
I assume that the third-party battery that I have is just ridiculously crappy and cheap. Can anybody give me an idea of what a reasonable expectation of battery life should be with the OEM Samsung battery? I'm assuming I should be able to get 3-4 hours screen-on time + 14-16 hours off-charger. All I will be using the phone for is browsing web, email, and XDA. No gaming, no movies, no music. So I'm hoping 3+ hours screen on & 14+ hours off-charger is a reasonable expectation with OEM Samsung battery.
If anybody can confirm that my third-party battery just sucks and I should get better battery life with an OEM battery, I would greatly appreciate it. If this is normal battery life with OEM battery while in AIRPLANE MODE and not even using the phone, then I don't think I can tolerate that.
Many thanks.

You should get that which you estimate. I have an oem battery on stock 4.0.4 and get those sort of hours even though it is about 18months old.

kboya said:
You should get that which you estimate. I have an oem battery on stock 4.0.4 and get those sort of hours even though it is about 18months old.
Click to expand...
Click to collapse
Awesome. Thanks for the info. Shocking how terrible this third-party battery that came with the phone is. Can't wait until OEM battery arrives!

The battery management on this phone isn't good compared to my previous phone. I've just learned to deal with it. Carry an extra charger. Your guess is about right. On a good day, my phone will last about 17 hours with almost 3 hours screen on. If its just wifi data usage, I can stretch it a bit more. Unless you plan on crippling your phone, don't expect anything amazing.
Sent by pocket technology.

kboya said:
You should get that which you estimate. I have an oem battery on stock 4.0.4 and get those sort of hours even though it is about 18months old.
Click to expand...
Click to collapse
chronophase1 said:
The battery management on this phone isn't good compared to my previous phone. I've just learned to deal with it. Carry an extra charger. Your guess is about right. On a good day, my phone will last about 17 hours with almost 3 hours screen on. If its just wifi data usage, I can stretch it a bit more. Unless you plan on crippling your phone, don't expect anything amazing.
Sent by pocket technology.
Click to expand...
Click to collapse
Thanks for the response. 3 hours screen-on + 17 hours standby is fine for me. As you can see from my OP, what I'm currently getting on the crappy third-party non-OEM battery is far worse than that.

for me it's always around 3.5 h screen on with constant 3g/H on.
i didnt experience any significant differences on my battery life with different kernels, roms or tweaks. just my experiences.
one question lads since we r on this topic ;
when i was on customs ics roms with stock kernel, my battery was always charging till 96%, now I'm running Gnex port with stock kernel and my battery is charging until it reach 100% capacity.
is this feature of JB ?
thanks in advance.

I get over 5 hours of screen use in 12-18+ hours :$.... I've done a lot of tweaking though. I'd try to find an extended battery if I were you. This is actually really normal battery life as reported by many other users. Or close enough to 'normal'. Smart phones suck with battery.
@Above: The Nexus S actually only charges to 96%. Anything past that is just a cosmetic effect. Meaning it isn't really charging past 96%. Your custom kernels probably just limited the charging percent. The stock JB kernel wouldn't do that.
Nexus S (GMS i9020a)
Paranoid (1.6 - 4.0.4)
Matrix Kernel (CFS - 20.0)
Ondemmand (800/100)
Deep Idle (On - Noop)
Live OC - 105 (400/800)
BLX - 98 (Inverted Apps)

I get 2H voice calls on 2G with 30% signal, 3H screen on time, half of it is wifi browsing, some is videos/media, some is News apps, and still have 25% left.

309041291a said:
I get over 5 hours of screen use in 12-18+ hours :$.... I've done a lot of tweaking though. I'd try to find an extended battery if I were you. This is actually really normal battery life as reported by many other users. Or close enough to 'normal'. Smart phones suck with battery.
@Above: The Nexus S actually only charges to 96%. Anything past that is just a cosmetic effect. Meaning it isn't really charging past 96%. Your custom kernels probably just limited the charging percent. The stock JB kernel wouldn't do
r u getting 5hs+ while using 3g/h connection?
if yes could share ur knowledge how to do it?
Click to expand...
Click to collapse

greg2826 said:
309041291a said:
I get over 5 hours of screen use in 12-18+ hours :$.... I've done a lot of tweaking though. I'd try to find an extended battery if I were you. This is actually really normal battery life as reported by many other users. Or close enough to 'normal'. Smart phones suck with battery.
@Above: The Nexus S actually only charges to 96%. Anything past that is just a cosmetic effect. Meaning it isn't really charging past 96%. Your custom kernels probably just limited the charging percent. The stock JB kernel wouldn't do
r u getting 5hs+ while using 3g/h connection?
if yes could share ur knowledge how to do it?
Click to expand...
Click to collapse
Normally I use 3G. I tried 2G + WiFi and I got close to 6 hours. Just mess around with your phone a bit
Nexus S (GMS i9020a)
Paranoid (1.6 - 4.0.4)
Matrix Kernel (CFS - 20.0)
Ondemmand (800/100)
Deep Idle (On - Noop)
Live OC - 105 (400/800)
BLX - 98 (Inverted Apps)
Click to expand...
Click to collapse

charged through usb, might be alive longer than usually.

Thanks for all the replies,
Sent from my Nexus 7 using xda app-developers app

Yeah I only get about 10 hours max, airplane mode, no screen usage. Stock battery, plus tried a third party battery. Same issue.
My screen on battery time isn't too bad, it's just like... my phone doesn't know how to idle or something. But no wakelocks etc. Tried stock, a few roms, a few kernels, battery calibration, removing all apps, nothing changes it.
Have to charge twice a day if I even start doing some light usage

mejobloggs said:
Yeah I only get about 10 hours max, airplane mode, no screen usage. Stock battery, plus tried a third party battery. Same issue.
My screen on battery time isn't too bad, it's just like... my phone doesn't know how to idle or something. But no wakelocks etc. Tried stock, a few roms, a few kernels, battery calibration, removing all apps, nothing changes it.
Have to charge twice a day if I even start doing some light usage
Click to expand...
Click to collapse
I have the SPH-D720 (NS4G) and my settings are:
100/800 MHz; NO OC & NO UV
Sio ~ OnDemand
Airplane Mode (Deactivated Phone) NO Mobile DATA
Matr1x v22 CFS
Deep IDLE ON
AOKP Milestone 6
1600 mAh Anker
I use 50% Screen Brightness and i can manage anywhere from 10-28Hours.
Yesterday i woke up turned on my phone @ 100% and didn't touch it for 8Hours and it only dropped 2%. Netflix 5Hours of screen on time. At the end of the day i managed this. Screenies below

XxLostSoulxX said:
I have the SPH-D720 (NS4G) and my settings are:
100/800 MHz; NO OC & NO UV
Sio ~ OnDemand
Airplane Mode (Deactivated Phone) NO Mobile DATA
Matr1x v22 CFS
Deep IDLE ON
AOKP Milestone 6
1600 mAh Anker
I use 50% Screen Brightness and i can manage anywhere from 10-28Hours.
Yesterday i woke up turned on my phone @ 100% and didn't touch it for 8Hours and it only dropped 2%. Netflix 5Hours of screen on time. At the end of the day i managed this. Screenies below
Click to expand...
Click to collapse
try 2 achieve this on 3G/H ;-)

mejobloggs said:
Yeah I only get about 10 hours max, airplane mode, no screen usage. Stock battery, plus tried a third party battery. Same issue.
My screen on battery time isn't too bad, it's just like... my phone doesn't know how to idle or something. But no wakelocks etc. Tried stock, a few roms, a few kernels, battery calibration, removing all apps, nothing changes it.
Have to charge twice a day if I even start doing some light usage
Click to expand...
Click to collapse
10 hours in airplane mode is really bad. Are you sure you don't have any apps that are constantly syncing? Have you disabled Google Backup Transport. I had my Nexus on airplane mode all day yesterday and it still had plenty of juice left after 12 hours.

greg2826 said:
try 2 achieve this on 3G/H ;-)
Click to expand...
Click to collapse
not hard at all. ill give it ago, and see what i can whip up

XxLostSoulxX said:
not hard at all. ill give it ago, and see what i can whip up
Click to expand...
Click to collapse
ok

greg2826 said:
ok
Click to expand...
Click to collapse
Here u go
Sent from my Nexus S 4G using xda premium

Battery life problems.

Hello, I'm currently running cm 9, however the battery life is just awful
When the phone is on sleep it loses like 1 percent every 5-10 minutes
I am using an extended battery as well, please tell me what to do I was on GB before and the battery was outstanding, I could go on one charge the whole day with heavy usage, now i dont think I can make it through the day with light usage on this
thank you
EDIT: This could be a sleep problem, because when the device is on, the battery is normal

If you flashed the Feb 27 cm9 you should flash proton kernel so you can watch videos. Battery life isn't as good as gb no matter what you do. Also give it some time to settle in. It takes more than a couple hours.

alright thank you... I just flashed the newest version of cm9 a few hours ago, I was flashing a bunch of roms and this one seemed the best... do you know how to force a device into deep sleep cause that seems to be the problem i believe

OK I was just on 20 percent, then i rebooted my phone, and now im on 2 percent... im seriously considering going back to gb

Sounds more like a battery thing? With CM9.? + Proton I'm getting at least a day* with light use. Maybe a bad app or combo of apps? What does BBS say is eating the charge?
* - I say at least a day because I can't not use it for that long.
Sent from my SGH-T959V using xda app-developers app

Stuck on hold said:
Sounds more like a battery thing? With CM9.? + Proton I'm getting at least a day* with light use. Maybe a bad app or combo of apps? What does BBS say is eating the charge?
* - I say at least a day because I can't not use it for that long.
Sent from my SGH-T959V using xda app-developers app
Click to expand...
Click to collapse
just the screen and the android system... very interesting thing though is happening
I'm running a bunch of quadrants to get the battery down to 0, and the battery is all the way down to 1%, however it's been on 1% for like 6 quadrant tests... maybe its just a problem with the indicator, however another indicator also says it's at 1%... very interesting

If you are on CM9, I suggest you flash Hefe or Proton.
I use Hefe because according to the posts being made it puts your phone into deep sleep, which means longer battery life.

tstrat said:
OK I was just on 20 percent, then i rebooted my phone, and now im on 2 percent... im seriously considering going back to gb
Click to expand...
Click to collapse
Definitely a battery problem. This happens to me on one of my batteries but not on another. Time to buy a new one. I haven't tested it fully but it does appear to be just a display issue. Sometimes the bad battery will make the phone display 1% but it will still act as if it had way more than 1% charge left. I haven't done any testing on that regard but that's what it appears to do.

FBis251 said:
Definitely a battery problem. This happens to me on one of my batteries but not on another. Time to buy a new one. I haven't tested it fully but it does appear to be just a display issue. Sometimes the bad battery will make the phone display 1% but it will still act as if it had way more than 1% charge left. I haven't done any testing on that regard but that's what it appears to do.
Click to expand...
Click to collapse
I don't believe it to be a battery problem, because I've been on GB with absolutely no problems and exceptional battery... I just upgraded to ics not long ago, and the battery life instantly screwed up

Have you set the cpu governor to anything silly like performance?
Have you let it charge up fully at least once?
Search xda for "better battery stats" app, use it to see if you're getting deep sleep.

Flash hefe over release 8 and youll have a little better battery. Proton doesnt deep sleep
Sent from my SGH-T959V using Tapatalk 2

Proton DOES deep sleep. That was one of its major features.
Certain scheduler/governor combinations work better on different kernels, though. If the specific one you like most sleeps better on Hefe, great. If the one you like does best on Proton, great. Just be aware that most issues are either physical or user-inflicted...
In this case, your battery is almost certainly dying. The variance in power over a reboot is a definite tell that your battery is probably swollen. If you can spin it on a table, the cells are starting to die. This does not mean you can't keep using it, but it does mean that your battery life will be irregular. It also means that you'll have significantly "higher" battery levels if you reboot the phone with external power connected, but the battery will discharge very quickly if it hasn't actually reached whatever level it believes it should be at.