Database Users

[BATTERY]--Improving CM7 Battery Life--[BATTERY]

So I have seen a couple users asking about creating a new thread for battery life on CM7 only, so here it is. I am getting ok battery life, but nothing near where it should be.
Here is where you can suggest, try, try again, and submit findings pertaining to the battery life. So let's get this started!!

jzero88 said:
So I have seen a couple users asking about creating a new thread for battery life on CM7 only, so here it is. I am getting ok battery life, but nothing near where it should be.
Here is where you can suggest, try, try again, and submit findings pertaining to the battery life. So let's get this started!!
Click to expand...
Click to collapse
I've found that turning off the radio saves battery life so I def. think that the radio is the problem for it

Thanks for starting this. It should be interesting to see where this thread goes.....

You mean flight mode? I don't think that is a viable solution, well at least if you need to use the phone. I can't even get xda super power installed for some reason
Sent from my SGH-T959 using XDA App

try some of the different cm7 modems that are around, i found that on the 2.2 roms the kb5 modem was very efficient... it helps a bit with cm nightly got about 16 hours moderate use.

byt3b0mb said:
try some of the different cm7 modems that are around, i found that on the 2.2 roms the kb5 modem was very efficient... it helps a bit with cm nightly got about 16 hours moderate use.
Click to expand...
Click to collapse
Right now I am on the 5-15 initial, I couldn't find the newest nightly
Sent from my SGH-T959 using XDA App

I turn data off when not in use and it definitely saves battery for me.

byt3b0mb said:
try some of the different cm7 modems that are around, i found that on the 2.2 roms the kb5 modem was very efficient... it helps a bit with cm nightly got about 16 hours moderate use.
Click to expand...
Click to collapse
I get better battery life with KB5 too.
I can confirm that data use is probably part of the issue. I live in the sticks, there is no 3G at my house. My battery life is actually descent, no where near what I had with Froyo, but it doesn't seem to be anywhere near as bad as other people are claiming.

turn off background data when you don't need it, don't use auto brightness.
Sent from my SGH-T959 using XDA App

Personally, I've just read from some ROM thread here, that you need to calibrate your battery if you flash custom ROMS. So far, it has worked out quite nicely.

Kenchi* said:
Personally, I've just read from some ROM thread here, that you need to calibrate your battery if you flash custom ROMS. So far, it has worked out quite nicely.
Click to expand...
Click to collapse
How do you do that?
Sent from my Vibrant of course!

Trackstar996 said:
How do you do that?
Sent from my Vibrant of course!
Click to expand...
Click to collapse
Charge to 100%, go into recovery and wipe battery stats.
Sent from my SGH-T959 using XDA Premium App

hitman818 said:
Charge to 100%, go into recovery and wipe battery stats.
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Click to expand...
Click to collapse
Yes, also doing that. I recommend to go to the Android Market and search for Battery Calibration by NeMa. It's a great, free application as well to make sure that your battery is calibrated on top of the instruction from the quote.

Using spare parts app change wifi sleep policy to never. Known bug in gingerbread. New wifi drivers were just released for stock builds but I don't know if theyll work on cm7 or if they will be implemented.
Sent from my GT-I9000 using XDA Premium App

Kenchi* said:
Yes, also doing that. I recommend to go to the Android Market and search for Battery Calibration by NeMa. It's a great, free application as well to make sure that your battery is calibrated on top of the instruction from the quote.
Click to expand...
Click to collapse
Ya battery calibration app works quite well, that is something I haven't done yet with this ROM 0_o

I was having terrible, absolutely terrible battery life with CM7 and I decided to do some investigating. On my initial installation I used Titanium backup and Google Backup to restore settings and applications. I could not manage 4-6 hours on a single charge, with calibration.
I decided to do a fresh CM7 install to test things out. I simply booted into recovery and wiped data, cache, and system. I reinstalled the initial package provided on the CM forums and let CM7 boot. After letting the new installation settle down for 10 minutes, I rebooted into recovery, flashed gapps, and then the newest nightly. Again, I let it boot and sit for 10 minutes before performing anything. After settling down, I charged up to 100%, rebooted into recovery again, and wiped battery stats.
I should note that through this I declined google's offer to use backup services and declines google's offer to restore any old backups. I also decided to not restore any apps through titanium backup.
With my screen brightness set to 100%, wifi enabled, bluetooth enabled, and using the phone at amoderate to heavy amount, I have gone 12 hours and am at 5%. I am certain that after the battery stats can calibrate fully and run through a few more charges I will easily hit 15 hours on moderate to heavy usage.

explodingboy70 said:
Using spare parts app change wifi sleep policy to never. Known bug in gingerbread. New wifi drivers were just released for stock builds but I don't know if theyll work on cm7 or if they will be implemented.
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Click to collapse
I think they are, atinm said he updated it, but it makes the wifi disconnect from time to time like the earlier cm7 builds.
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jzero88 said:
Right now I am on the 5-15 initial, I couldn't find the newest nightly
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
if you have rom manager pro the nightlies are available for download.

here's a few tips for you guys:
1. turn off 3G, stick to GSM only. Found in settings > wifi and network > mobile network> gsm only
2. use some black themes, anything than the normal grey and stuff should help
3. If you have data, use that instead of wifi, from what I see wifi eats more battery
4. if you're using wifi, go into wifi settings > *menu button* > advanced wifi settings > wifi sleep policy to: when screen turns off or never when plugged in.
hope that helps

This thread has been very helpful. Thanks

Someone help me! (BatLife woes)

Alright I wasn't going to make a thread on this because this topic is already discussed elsewhere naturally but I feel my situation is different. All over the place I see people reporting great battery life with ICS.. well mine is HORRIBLE. I just flashed the latest nightly for Pete's bugless. I didn't change the kernel. Everything is stock. Only a few apps installed. Noop for scheduler and ondemand for governer.
The phones been off the charger for 55 minutes and I'm sitting at 76%. Idk what's going on. I've tried so many rom/kernel combos and I seem to get the same exact battery life no matter what. Around 6-9 hours with less than 1 hour of screen on time.
Things I've tried to combat this:
Undervolting
Freezing apps
Restricting background data
Underclocking
Brightness set to auto
And I'm sure a few other things I'm forgetting about. I've done all this and still get ****ty battery life. I've flashed the new radio hoping that it would solve my issues but no dice. My signal strength reports at -67 dbm yet the bars never go over 2. 3g or 4g. Even after updating plr.
On gingerbread cm7 I ran brightness at 70%, ocd to 1.4ghz and always got 15+ hours.
For the love of god someone help me. Cuz I think my phone hates the cream sammiches.
Sent from my Nexus S 4G using xda premium

Sent from my Nexus S 4G using xda premium

try this kernel, trinity teuv underclocked/undervolted kernel, oc'd gpu http://goo.gl/rY6ga
and do not set brightness to auto, its a battery killer. i keep my brightness at about 20-25%.
also, be sure to fully discharge your battery then charge it completely, after 2 or 3 cycles you should be good.

simms22 said:
try this kernel, trinity teuv underclocked/undervolted kernel, oc'd gpu http://goo.gl/rY6ga
and do not set brightness to auto, its a battery killer. i keep my brightness at about 20-25%.
also, be sure to fully discharge your battery then charge it completely, after 2 or 3 cycles you should be good.
Click to expand...
Click to collapse
I do this every day lol I let the battery drain to around 15-30% before I plug it back in.
Screenie: 1 hour later and I lost another 25% this can't be rom or kernel related. As I have tried trinity already and the same thing happens
Sent from my Nexus S 4G using xda premium

Ugh. Another 20% gone. Its only been a half hour from the above screenie. You guys see my dilemma? Lol **** me.
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21% ..
Sent from my Nexus S 4G using xda premium

i was having horrible battery drain after flashing a new rom & kernel - i finally figured it out that my APN settings were messed up and I re-entered them according to the correct carrier settings.
i don't know if that will apply to you since it looks like your 4G data is working properly, but since I was on wifi 99% of the time, as soon as I went off, my data didn't work. but it's something to look at.

4 hours later I'm down to 4% from a full charge.
Sent from my Nexus S 4G using xda premium

Could you try better battery stats to see if something is holding a wakelock?

Turn Data usage off :/ i think Fb or some app is using your 4g

irizwan said:
Turn Data usage off :/ i think Fb or some app is using your 4g
Click to expand...
Click to collapse
I would be interested to see what your battle life diff is without 4g switched on. Also in that 4 hrs what was ur screen on time?
Have you thought of trying a new batt? Just got an OEM Samsung for 5 bucks on eBay. Worth a shot.
Oh remove fb app it blows...install friend caster way better less batt make sure you change the sync interval.
You could also try green power from the market to manage your data use while screen is off.
Sent from my Nexus S 4G using Tapatalk

Ok here's how my battery performs back in cm7 nightly 174 gingerbread. Almost 4 hours and only 25% chipped away. If you look above you'll notice I lost more than 40% in the same time with ics. And I'm doing nothing different. I'm even overclocked to 1.3ghz ondemand with noop for a scheduler.
I think I'm sticking to gbread until official source is out. Maybe then ill get the same battery life.
Sent from my Nexus S 4G using xda premium

That is really weird, if you have time try Milestone 3 and SG's latest kernel and just leave the settings stock . I get wonderful battery life with it hopefully you do to
Oh and are there any apps you are using on ICS that you aren't on CM7?
Sent from my Nexus S 4G using XDA App

Nope. Lately its only been a handful. I actually have more apps installed on gbread to achieve some of the features that are baked into ics. I just don't get it. Ics hates my phone. I even used the GPS today. So weird.
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Try what I suggested unless you did already then ignore lol
Sent from my Nexus S 4G using XDA App

Could it be a faulty battery?

Harbb said:
Could you try better battery stats to see if something is holding a wakelock?
Click to expand...
Click to collapse
This. If you are installing the same ol battery-draining POS app then you are not going to fix it with any rom or kernel.

So you guys think my batter watcher widget is preventing my phone from sleeping properly? Ok.. I'm on cm7 right now. Battery is def back to normal. And this is with bacround data on. Ill delete bw and get better battery stats.
Sent from my Nexus S 4G using xda premium

Better battery stats is not the same thing as other (mostly useless) monitoring apps.

Look. 16 hours on gb. If none of my apps are killing the battery then what could it be?
Sent from my Nexus S 4G using xda premium

Massive battery issues

Hello folks.
I'm currently on Aokp 4.2.2 unofficial with Francos r90 Kernel, bootloader and Radio are both updated. I'm suffering from massive battery draining. I guess something isnt letting my CPU sleep properly, as i always get messages like "100% awake while screen off" from battery stats plus. I'm just getting up to 2 hours screen on time, and battery is falling by about ~7% / hour With normal usage (whatsapp, News, xda) and like 15 Minuten screen on time in that hour. Also, see the attached Images. I sometimes have wakelocks by audioOut_2 and as you can See, maps is using more battery than the Display itself.
On an additional Note, GPS is always off, im using Taster to locate, but with cell near only.
Would be very Kind to help me out of this issues, thank you a bunch!
Sent from my Nexus 4 using xda premium

Turn off Location Services for a little bit to see if that helps.

You should try a program like autostarts, and don't allow things to run unless explicitly started by yourself. This way it'll help identify if there is an misbehaving program.
I saw you were using franco r90 which could be an issue. Try going back to the last stable

I think you will like this application.
https://play.google.com/store/apps/...GwsMSwxLDMsImNvbS5vYXNpc2ZlbmcuZ3JlZW5pZnkiXQ..
This simple application will make your annoying applications to go to sleep. Therefore your phone can finally go to sleep like it should when it's not in use. I see that Google maps seems to be the culprit in your battery drain. You can use titanium backup and delete it and install it back again from the play store. After that you can use the application that I've given you and force it to go tot sleep.
Here's the forum for the application:
http://forum.xda-developers.com/showthread.php?t=2155737

AW: Massive battery issues
Thanks guys! I disabled some Autostarts and greenified some apps. I'll Report the outcomes later today.
Sent from my Nexus 4 using xda premium

JoeBananas_ said:
Thanks guys! I disabled some Autostarts and greenified some apps. I'll Report the outcomes later today.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
If that doesn't work I recommend you flash the matr1x kernel I'm on it and I get very good life on this phone so yeah give it a try if u want
sent from my Nexus 4 in Equestria
Click it I dare you?
http://forum.xda-developers.com/showthread.php?t=1784401

AW: Massive battery issues
Thanks for your reply. Yeah im already thinking about flashing matr1x or trinity Kernels. How much screen on time Do you get with matr1x?
I reinstalled maps, greenified maps and facebook. Updated to Franco 92. Already getting better results with greenified maps, but i get following wakelocks:
"pm8921_eoc", "msm_otg" and AudioOut_2 and still notifications from bbs: 100% awake.
Apps running are: astrid, avast, Francos updater, Rom toolbox, Tasker
Sent from my Nexus 4 using xda premium

AW: Massive battery issues
Does anyone have some knowledge about How to identify why Android OS is consuming so much battery Life? While screen off some process is waking up the Device, up to 1.5 GHz.
Sent from my Nexus 4 using xda premium

I also have MASSIVE draining issues. Took my phone off charge around 9am this morning... 1hr screen time... 8% battery left and its only 13:45 Pacific time...
Latest Faux running in dual core ECO MODE underclocked to 1.3Ghz with Stock 4.2.2,,,, still get ****ty ass battery life...

AW: Massive battery issues
Do you see any wakelocks using the better battery stats app? Which apps are running?
Sent from my Nexus 4 using xda premium

JoeBananas_ said:
Do you see any wakelocks using the better battery stats app? Which apps are running?
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
I just bought it ( for $3), sooo now I have to wait and see what is causing this....

stealthj said:
I just bought it ( for $3), sooo now I have to wait and see what is causing this....
Click to expand...
Click to collapse
Cannot wait til you update us!
Coming from the iphone 4, good battery life is the most important thing i miss. I need a rock solid reliable phone or else would have started to mess around a read about Kernels to see how they may help with better battery life. My iPhone would last me 3-4 days of general use. To me General use is very light use..! With nexus it lasts max 1-2 days but more importantly i need to be concious what the battery level is. With th eiphone i never really bothered as i knoew i would get at least 2 days if not more.

AW: Massive battery issues
Still got audioOut_2 wakelock. Except that onr, everything is fine After Kernel update, greenifying and disabling Autostarts
Sent from my Nexus 4 using xda premium

Any options out there for battery tweaks?

I did a few searches and wasn't really able to pull up much in the way of battery tweaks, what's everyone doing in terms of this? I'm currently running stock rom, all I did was fully update after getting the phone from Sprint and then rooted and proceeded to install twrp using goomanager. I'm coming from the Galaxy S2 running calks GB build, so I'm used to 3 days of battery with heavy usage! I know this phone won't be able to achieve that right out of the gate with the current level of development going on, but I'm sure I can optimize it some how. I'd consider going to a custom ROM and kernel..flashing seems similar to the S2 but I'm nervous!
Sent from my SPH-L720 using xda premium

There's this https://play.google.com/store/apps/details?id=com.xiam.snapdragon.app
Sent from my SPH-L720 using Tapatalk 4 Beta

I've never heard good things about those kinds of apps...maybe because they didn't get along well with custom tweaks? Do they work well with stock setups?
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GiantJay said:
There's this https://play.google.com/store/apps/details?id=com.xiam.snapdragon.app
Sent from my SPH-L720 using Tapatalk 4 Beta
Click to expand...
Click to collapse
Tried it... and if anything I got LESS battery life because it runs in the background constantly.
@vadyr56 Download KT SGS4 Kernel, I'd also recommend to download GSam Battery Monitor and see if you have anything running in the background a little too much!

I get phenomenal battery life with no tweaks stock rooted. I turn off most things since I don't use them and thats about it.

GiantJay said:
I get phenomenal battery life with no tweaks stock rooted. I turn off most things since I don't use them and thats about it.
Click to expand...
Click to collapse
I have everything turned on (Google Now, all Samsung Goodies like Gestures, S-Voice Voice commands, etc.) and still manage to get a day and a half with like 3-5 hrs of on screen time.

[Q] Android 4.3 battery drain?

Hi, i been noticing some battery drain after updating to 4.3 does anyone has this problem ?

Me too.

Yep me too....:thumbdown:
Sent from my Nexus 7 using Tapatalk HD

Hoppy063 said:
Yep me too....:thumbdown:
Sent from my Nexus 7 using Tapatalk HD
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Click to collapse

Hoppy063 said:
Yep me too....:thumbdown:
Sent from my Nexus 7 using Tapatalk HD
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Click to collapse
Odd, mine seems to be a lot better battery wise since 4.3... You might want to use BetterBatteryStats to pinpoint the cause (maybe some wakelocks etc.)

Flash a custom kernel.

Yes, me too, battery seems worse than in 4.2.2. Or is it just because that I use it more now i.e. to restore apps etc?

Really? Oh no!!
I'm still waiting on my ota update
Sent from my Nexus 7 using Tapatalk 2

dalanik said:
Yes, me too, battery seems worse than in 4.2.2. Or is it just because that I use it more now i.e. to restore apps etc?
Click to expand...
Click to collapse
Im gonna go back to 4.1.2 because it has the best battery life which 4.2.2 and 4.3 doesnt have

me too. Really hoped android 4.3 fixed this problem ;(

been having this battery drain problem ever since 4.2.2
Do you guys have this drain problem in IDLE mode? because I do..
rough estimate, it drains like 7 to 8% in one hour when my device is in SLEEP mode..

But to all this, what apps or services seems to be draining the battery?
Sent from my Nexus 7 using Tapatalk 2

I don't know what your talk in about, I'm getting better battery life than I ever did before. I'm UV by 25 running faux kernel (u21), and clean ROM. I just removed all the gapps I don't use, and don't run anything that needs background syncing. Did you guys do clean installs(full flash via fastboot)?
I also turned off daydream which I am suspicious of, yet I have no proof that it does anything

megabiteg said:
But to all this, what apps or services seems to be draining the battery?
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Thats the problem, I hard factory resetted several times and leave it alone with no new apps
installed before.. disabled NFC, my mobile connection.. and still it drains like a leaky hose in idle mode..
some friendly ppl here suggested installing greenify and betterbatterystats and stuff..
but it doesnt really help me pinpoint whats doing the draining.. maybe because I am not sure what I am looking at..
end result, i even flashed (nearly bricked my nexus on several occasions too) and still the drain is there..
I thought my battery is dying or something.. but my nexus is barely 6 months old.. and battery status shows it as GOOD..
so yea, I am stumped..

Yeap.
I am having the same problem with the battery, the battery is spent very quickly, I have less applications installed and lately I have not used the phone to see if it was me and nothing. It may be because manually install the OTA?

Does the rule of waiting a few days/recharge cycles to get a true sense of the battery not apply to Nexus devices like it does to Samsung devices?

downwiththebanksters said:
Does the rule of waiting a few days/recharge cycles to get a true sense of the battery not apply to Nexus devices like it does to Samsung devices?
Click to expand...
Click to collapse
The initial battery drain after flashing can be attributed to apps conducting their first sync and the kernel "settling." This only takes a matter of hours at best. After that, one can get a fairly accurate idea of how their battery is being tasked.
Sent from my SCH-I545 using Tapatalk 4 Beta

i used to get horrible battery drain until I disabled google now.

I'm also experiencing severe battery drain after taking the 4.3 update on my stock, unrooted Nexus 7. It's been 3 days and no improvement.
Sent from my Nexus 4 using xda app-developers app

I too face same problem, and the App sucking most of the battery is "Kernel (Android OS)", second one is "Launcher", "Phone" and "Android System".
Any suggestions solutions found for this battery issue?