Develop Bugs

[Q] Crazy Battery Loss on CM9... help?

I recently updated my E4GT to CyanogenMod 9 alpha 5 and my battery has been dying insanely fast. I noticed immediate drops in battery % at random times, see attached image.
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I disabled notification lights to see if that would help, but no dice... any help?

Well it's obvious that you're doing it wrong
Sent from my SPH-D710 using Tapatalk 2

Hey let me talk to you for a sec... dont take this the wrong way but are you the only one in the forum that does not know all ICS roms have terrible battery life until we get kernel source.....Bad battery life is notated on like every thread in ICS.
Its ok man just messing with you but yea until kernel source comes out either deal with it or go back to GB... Oh yea and try and polish up on your ICS knowledge for the future

playya said:
Hey let me talk to you for a sec... dont take this the wrong way but are you the only one in the forum that does not know all ICS roms have terrible battery life until we get kernel source.....Bad battery life is notated on like every thread in ICS.
Its ok man just messing with you but yea until kernel source comes out either deal with it or go back to GB... Oh yea and try and polish up on your ICS knowledge for the future
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I dont know about all that I am on CM9 as well and I get the same life maybe a little less than I did on the gingerbread roms. I easily make it through a day with heavy use with battery life to spare. It must be a rouge app.

rbtrucking said:
I dont know about all that I am on CM9 as well and I get the same life maybe a little less than I did on the gingerbread roms. I easily make it through a day with heavy use with battery life to spare. It must be a rouge app.
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Hey if you are making it through the day then what the heck are you complaining about and with heavy use.... Come on man! Get Better Battery Stats and figure it out...
I thought you had real issues...lol

I know about the battery issues, but I have never seen a drop like in the screenshot I posted. I don't know if you looked at it, but I have not read of a reason for this to occur. It drops somewhere around 30% immediately

Sholland91 said:
I know about the battery issues, but I have never seen a drop like in the screenshot I posted. I don't know if you looked at it, but I have not read of a reason for this to occur. It drops somewhere around 30% immediately
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Simple man the kernel sucks life out of your phone when custom kernels start flowing so will your battery life.
Sent from my SPH-D710 using Tapatalk

I solved the problem.
I have three batteries.

Sorry to bring up a dead topic but since these issues are still rampant and there is no "official" fix thread that I know of, I thought I'd post my findings and fixes that I have come acrossed (I take no credit for any of these methods) after taking these steps, my ics battery issues are gone.
Backup anything you don't want to lose.
Do a factory reset from the privacy settings.
Format internal SD AND external SD under storage settings.
Change wifi advanced setting "keep wifi on during sleep" to never.
Turn off display battery percentage under display settings.
That's it! One or more of these methods fixed my issues, I was having next to all of the problems people are having. Including the random massive battery drops mentioned in op.

Also your notification light and battery light could drain as well.
sent from my BAD A$$ Epic touch

Best ROM/Kernel combo for battery?

Been getting horrible battery on my Sprint GNex. Currently running Paranoid Android with that kernel and still getting **** battery life. What's the best combination that is working for you all? I'm getting around 7~9 now. I used to get a whole day out of my OG Evo.

Sigh another battery thread.
Was this battery over 3G? How long? What was the display time? Need more info bud. Not just help my battery life sucks...
Sent From My Sprint Galaxy Nexus

ROM? No idea. Kernel? Trinity

Not every ROM and Kernel combo is the best for everyone. YOU have to see which work best for YOU and YOUR usage. All these are really "hey let's all post what we're using because it's our favorite and if we're using it it MUST be the best"

joshnichols189 said:
Not every ROM and Kernel combo is the best for everyone. YOU have to see which work best for YOU and YOUR usage. All these are really "hey let's all post what we're using because it's our favorite and if we're using it it MUST be the best"
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This.
Sent from the future.

CM9 SKANK/TRINITY alpha 85~4.7~1344-307=4 hrs or more screen on time and about stands still on standby. I do not allow anything to run in background (manually update when needed) and I only have apps I use on my phone. I have ran this setup for wks. Just updated to today's build.. With this kernel I've had no reboots but if u do try Trinity and have a reboot bump voltage up a hair till it quits. It will. And never have I gotten the screen time I do w Trinity w/ any other kernel. Been through the list. Also this rom, its the most dependable there is in my opinion. Scrolls like no other!! Lots of new options like status bar on bottom..much more!! Still flawless!
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No it isn't "another battery thread" I wanted to see what people were getting. I don't run 3G or wifi really at all unless I'm using them. I know how to use my battery. I also know it matters for each phone. The stuff I have tried isn't giving me the results I think are possible with my phone. Obviously the stuff I am trying hasn't worked. There isn't much more info NEEDED. I asked basically what people were getting and on what combinations. Someone else's combination might do wonders for me. I'll try trinity since many people are suggesting it. I'll run it over PA for now, and see what I'm getting.

http://forum.xda-developers.com/showthread.php?t=1713987
http://forum.xda-developers.com/showthread.php?t=1711390
http://forum.xda-developers.com/showthread.php?t=1706602
http://forum.xda-developers.com/showthread.php?t=1685425
http://forum.xda-developers.com/showthread.php?t=1680952
http://forum.xda-developers.com/showthread.php?t=1673823
http://forum.xda-developers.com/showthread.php?t=1690913
http://forum.xda-developers.com/showthread.php?t=1644772
http://forum.xda-developers.com/showthread.php?t=1620251
http://forum.xda-developers.com/showthread.php?t=1537280
http://forum.xda-developers.com/showthread.php?t=1503775
I could go on.
Then there are the battery threads which......have the exact information you're asking for: "basically what people were getting [for battery life] and on what combinations".

ÜBER™ said:
Sigh another battery thread.
Was this battery over 3G? How long? What was the display time? Need more info bud. Not just help my battery life sucks...
Sent From My Sprint Galaxy Nexus
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mr positivity :silly:
but you are right about needing more information. the more information, the better chance that we can help.

No point in digging through threads when I can find answers here.

I have the gsm gnex and i'm using AOKP build 39 with franco kernel nightly 192 and i constantly get around 3 1/2 to 4 hour screen on time. In my opinion the best combo. Experimenting with different kernels is however fun.

fire & ice said:
I have the gsm gnex and i'm using AOKP build 39 with franco kernel nightly 192 and i constantly get around 3 1/2 to 4 hour screen on time. In my opinion the best combo. Experimenting with different kernels is however fun.
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See, I wish everyone else answered like this. Props to you sir +1

DRatJr said:
No point in digging through threads when I can find answers here.
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Its part of the forum rules...
Search before posting.

new rom

been out of the xda scene for a bit and definitely need a new rom
i'm currently on CM9 alpha-6 and get just awful battery life, less than 4 hours.
What rom should i look at for good battery life and a less buggy experience?
also, i'm not very familiar with a lot of the stuff here, but are there any things i can do to increase signal strength, my brother on the 4s on the same network will have service in places where i get no service etc.

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on cm9 alpha 6 you really shouldn't be getting battery that low... I could get two days with about 2 hours screen time back when I was running it. Turn off haptic feedback and LED notification and it will help. If I recall correctly the led light prevents the phone from going into deep sleep. Also, keep auto sync off and battery will improve dramatically... Furthermore, most of the newer builds (including the cm9 nightlies) have governors by which you'll be able to optimize your battery life. Anything with one of agat's source built kernels, one of chris41g's kernels or the kuban kernel will do... Just make sure you use a kernel that is compatible with the Rom you choose. however, ics is a "heavier" os than gingerbread, so getting gingerbread battery life isn't likely.
I've used most of the ROMs and I can't say that I notice too much of a difference in battery life on them (apart from builds before source dropped). Maybe an hour or so, but without consistent usage it's really hard to tell... I suppose I would suggest Black, Calk& Venum tweaked or the blu kuban. I'm getting good battery like on black, and the dark theme obviously helps battery... Kuban is also pretty dark too, and Ruj is really involved in his thread. I put my brother on kuban and he's not complaining about his battery anymore so I guess it's better than what he was on before (one of the early ics leaks). Calk and Venum tweaked has calk's legendary battery tweaks so you won't hurt there.
As to your signal strength, make sure you update prl and profile... If you stay on cm9 youll need to use el29 temp boot in order to do so. I know sprint updated their prl so you are definitely on an outdated one if you've been on alpha 6 since june when it dropped... Also mess around with modems till you find one that responds well.

eagles16 said:
...my brother on the 4s on the same network will have service in places where i get no service etc.
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Apples to oranges.. different hardware = different experiences.. Either shoot him, convert him or join him on that one.. You pick.

Pyrotoast said:
on cm9 alpha 6 you really shouldn't be getting battery that low... I could get two days with about 2 hours screen time back when I was running it. Turn off haptic feedback and LED notification and it will help. If I recall correctly the led light prevents the phone from going into deep sleep. Also, keep auto sync off and battery will improve dramatically... Furthermore, most of the newer builds (including the cm9 nightlies) have governors by which you'll be able to optimize your battery life. Anything with one of agat's source built kernels, one of chris41g's kernels or the kuban kernel will do... Just make sure you use a kernel that is compatible with the Rom you choose. however, ics is a "heavier" os than gingerbread, so getting gingerbread battery life isn't likely.
I've used most of the ROMs and I can't say that I notice too much of a difference in battery life on them (apart from builds before source dropped). Maybe an hour or so, but without consistent usage it's really hard to tell... I suppose I would suggest Black, Calk& Venum tweaked or the blu kuban. I'm getting good battery like on black, and the dark theme obviously helps battery... Kuban is also pretty dark too, and Ruj is really involved in his thread. I put my brother on kuban and he's not complaining about his battery anymore so I guess it's better than what he was on before (one of the early ics leaks). Calk and Venum tweaked has calk's legendary battery tweaks so you won't hurt there.
As to your signal strength, make sure you update prl and profile... If you stay on cm9 youll need to use el29 temp boot in order to do so. I know sprint updated their prl so you are definitely on an outdated one if you've been on alpha 6 since june when it dropped... Also mess around with modems till you find one that responds well.
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okay thank you, i'll take your suggestions with the haptic feedback and led light and i'll look into the other roms

Which Rom Offers the Best Battery Life on Jellybean?

I know im going to get flamed on this for making 'another better rom for battery thread' but ive been away for two weeks and i see some new roms are out for jellybean, i am currently rocking AndroidMe Cm10 rom, but would like to try a different rom for better batterylife. (its not the best as is ..) i know you guys are going to say every device varies but chances are what most people are getting better battery life on so will mine... so what would you guys reccomend? i really dont want to revert to TeamGummy 4.0.4 (ICS) but if i cant find a better batterylife

well, a better battery life is mostly up 2 the kernel, screen brightness, wireless and network usage, other settings r just familiar of most roms.
though ice has a better battery life than jb, i think
the GUMMY doos have a good battery life 'cause it's using the imoseyon kernel:good:

Noooooo!!
Sent From My Toro+ via RED Tapatalk

ed116 said:
I know im going to get flamed on this for making 'another better rom for battery thread' but ive been away for two weeks and i see some new roms are out for jellybean, i am currently rocking AndroidMe Cm10 rom, but would like to try a different rom for better batterylife. (its not the best as is ..) i know you guys are going to say every device varies but chances are what most people are getting better battery life on so will mine... so what would you guys reccomend? i really dont want to revert to TeamGummy 4.0.4 (ICS) but if i cant find a better batterylife
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Not trying to flame you but you answered your own question in the OP. Every device varies along with the way each person uses it. I don't have any technical expertise to fall back on when choosing a ROM so it's mostly a trial-and-error process. Flashing a different ROM or kernel is fairly simple, so just experiment and see which one gives you what you are looking for. I rarely, if ever, got the same performance that other users reported when I had my Evo. And lastly, read what other people are saying about a particular combination. XDA has no shortage of people willing to try out new things and let the rest of the community know how it worked. The last 3 pages of a thread are usually the best place to look and see what kind of success/failure rate is happening.

ed116 said:
I know im going to get flamed on this for making 'another better rom for battery thread'
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Click to collapse
why did you make the thread then?
here's the best rom ever! STOCK

well, in the 2 weeks that you were gone, there have been amazing breakthroughs in development! The battery now lasts almost 2 weeks with on avg 17hrs of screen on time!
*sigh* just look at the kernel threads and youll see, its not like there's 70+ kernels

Stock.
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Sent from my Stock AOSP Android 4.1.1 Galaxy Nexus.

Flamefest.
No one can decide for you. No one uses their phone like you.
You need to decide for yourself and put in the work like everyone else
Flash and see.
FNM

What ROM do you guys experience best battery with?

Just wondering, what ROMS have you guys tried and genuinely thought "Wow, the battery really is good".
I've been trying Renovate since version 8 and battery on my device has been pretty poor, on AR-HD it's quite regular, don't have any issues with it.
I'm sticking with Sense and haven't tried any other Sense ROMS and that's why I'm asking.
Also not planning to switching to AOSP ever.

D3VICE said:
Just wondering, what ROMS have you guys tried and genuinely thought "Wow, the battery really is good".
I've been trying Renovate since version 8 and battery on my device has been pretty poor, on AR-HD it's quite regular, don't have any issues with it.
I'm sticking with Sense and haven't tried any other Sense ROMS and that's why I'm asking.
Also not planning to switching to AOSP ever.
Click to expand...
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You can try skydragon . My battery life lasts about 8 hours on heavy usage .

skywalker1162 said:
You can try skydragon . My battery life lasts about 8 hours on heavy usage .
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Just downloaded it and going to flash it right now, thanks for posting.
I've read in the thread an update is coming though, any idea what the changes/fixes will be?

I think ARHD V9.7.2 have more stable and better battery performance to JB ARHD 16!
I have over heat issue with that!

D3VICE said:
Just downloaded it and going to flash it right now, thanks for posting.
I've read in the thread an update is coming though, any idea what the changes/fixes will be?
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User selectable tweaks,aroma installer and De sensed option among many more .
SKYDRAGON Team

I used ViperX for a long time. That has always given me the best battery life. I've even been able to get up to 6h of screen on time with heavy internet use.
If you're looking for a JB sense ROM, I had great battery life on both InsertCoin and OrDroid. Nowhere near ViperX, but still good.
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Sent from my HTC One X using Tapatalk 2

Had a PM asking how I manage to get 6 hours of on screen use and thought my reply might help others, so I'm going to post it here too.
"Hey man,
That was with ViperX 2.7.1 running the AOSP theme.
Yeah I've had 6 hours, or near to it, quite a few times now. I actually use the stock kernel included in .zip.
I also desense the rom and mainly use the phone with about 30% brightness. Also, make sure feed sync is switched off in Facebook under the accounts and sync area in the settings because that's an absolute killer. I still have Plume and GMail set to sync almost all the time, but with Facebook on, it totally destroys the battery. If you want to sav even more battery whilst increasing battery life, switch everything to manual sync.
ViperX is an excellent choice. I've used loads of the new JB sense roms and none can compare to ViperX for battery life and the excellent mods included.
Hope this helps."