Database Users

Using CM7? You must read this! (Correct post)

Ok guys. I have to admit, I was about to give up on CM7 due to battery issues and what seemed to be memory leaks progressively making my phone lag more and more throughout the day. I have found something some of you may not be aware of and I wanted to share this amazingly helpful kernel with you.
Using x99, Scary, and stock kernels regardless of governor I seemed to maybe get 8 hours of battery life with moderate to heavy use. I am proud to say, using bcnice20's kernel I have had my phone on for 9 hours with 60% battery life today. This is incredible, even with lighter use on the other kernels I had NOWHERE near this amount of battery left.
Most of you may not have seen this kernel because it isn't posted. (as far as im aware) Let me help you out. First, go into your Market and download Kernel Manager. There is a lite version in there that is free. If you have an extra buck or two donate to the developer for making a neat app where you can download kernels in a convenient place by downloading the pro version.
What you will be downloading is called bcblend SIO tinyRCU kernel. I have not tried VR tinyRCU kernel yet. Not sure what the differences are, if someone could elaborate that'd be appreciated.
Regardless, I find the sweet spot for this to be at 245MHz min and 1GHz max on Interactive governor to work really well. The phone does not seem to get laggier throughout the day and consistently performs well, snappy, and just way better than the other kernels. (No offense to x99 and Scary, I appreciate all you've done!)
Give it a try and let me know if you all have similar results! I have heard that AOSP gets less battery than Sense ROMs from people on this very forum, and this may be the kernel to put that little debate to rest.
Oh, and be sure you have the latest CM7. I am on 7.0.2.1 trying this out.

Thanks ima try this out
Sent from my PG06100 using Tapatalk

+1
I've been flashing too much to test out battery life but bc's kernel is just like melted garlic butter smooth. At 768mhz max my Shift still hums along like it's OC'd
^ Shift Faced

jesusice said:
+1
I've been flashing too much to test out battery life but bc's kernel is just like melted garlic butter smooth. At 768mhz max my Shift still hums along like it's OC'd
^ Shift Faced
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I owe it to you for having me download kernel manager.

Well with CM7 and the x99 kernal seems to give me the best battery life with the SMARTASS governor. About 20 hours with medium to heavy use.

Link?
Sent from my EVO Shift 4G powered by CM7

koolkid09 said:
Link?
Sent from my EVO Shift 4G powered by CM7
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There is no link at this point, you have to do it via kernel manager. I'd upload it but I don't want to without bc's permission.

I haven't use any other "controllers" other than the one built into cm7... can I use that or is there a prefered one to change governers and such. Thanks!
Sent from my PG06100 using XDA Premium App

lilgrass71 said:
I haven't use any other "controllers" other than the one built into cm7... can I use that or is there a prefered one to change governers and such. Thanks!
Sent from my PG06100 using XDA Premium App
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Click to collapse
Since CM7 lets you change governors right in its settings I uninstalled SetCPU for now, in theory I would think it would cause more battery drain but I don't know for sure. But yes I just changed it right in CM7. I changed the governor to interactive and set the max cpu frequency to 1036MHz.

Gonna try this out. I love CM7 but the battery is killing me. I pray this works.

Android system & cell standby seem to be the battery use culprit. I will give this a try though but don't really think its in the kernel. Ill report back...
Sent from my PG06100 using XDA App

This kernel seems to be really good about not sucking the battery while on standby for me, that seems to be the crown jewel of it all. Right Now I am at 14 hours off the charger with 29% left.. remember I was lucky to get 8 hours most days before using this kernel.

This is off-topic, but along the same lines: which kernels gave the best battery life for Sense?

+1 OP was right I flashed this kernel and so far so good on battery life
Sent from my PG06100 using Tapatalk

c00ller said:
This is off-topic, but along the same lines: which kernels gave the best battery life for Sense?
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Click to collapse
Honestly I didn't get much difference between x99 and bcnice20's 1.5GHz kernel so either of those two. Scarykernel SUV works well on Sense if your phone can boot it too.

fifedogg said:
Android system & cell standby seem to be the battery use culprit. I will give this a try though but don't really think its in the kernel. Ill report back...
Sent from my PG06100 using XDA App
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Click to collapse
It seems to be true. I'm def getting better battery life. I also calibrated my battery but I've done that before without any major change. So far I have 5 hours of quite a bit of use and I'm at 71% I would normally be around 55-60% by now. I wonder what the main difference is with the kernel...

PaulB007 said:
Ok guys. I have to admit, I was about to give up on CM7 due to battery issues and what seemed to be memory leaks progressively making my phone lag more and more throughout the day. I have found something some of you may not be aware of and I wanted to share this amazingly helpful kernel with you.
Using x99, Scary, and stock kernels regardless of governor I seemed to maybe get 8 hours of battery life with moderate to heavy use. I am proud to say, using bcnice20's kernel I have had my phone on for 9 hours with 60% battery life today. This is incredible, even with lighter use on the other kernels I had NOWHERE near this amount of battery left.
Most of you may not have seen this kernel because it isn't posted. (as far as im aware) Let me help you out. First, go into your Market and download Kernel Manager. There is a lite version in there that is free. If you have an extra buck or two donate to the developer for making a neat app where you can download kernels in a convenient place by downloading the pro version.
What you will be downloading is called bcblend SIO tinyRCU kernel. I have not tried VR tinyRCU kernel yet. Not sure what the differences are, if someone could elaborate that'd be appreciated.
Regardless, I find the sweet spot for this to be at 245MHz min and 1GHz max on Interactive governor to work really well. The phone does not seem to get laggier throughout the day and consistently performs well, snappy, and just way better than the other kernels. (No offense to x99 and Scary, I appreciate all you've done!)
Give it a try and let me know if you all have similar results! I have heard that AOSP gets less battery than Sense ROMs from people on this very forum, and this may be the kernel to put that little debate to rest.
Oh, and be sure you have the latest CM7. I am on 7.0.2.1 trying this out.
Click to expand...
Click to collapse
I have been using the x99 kernal and i have about 1 d and 12 hrs with about 45 % left.. I also have the calibrator apk from the market so it wipes the battery stat when im at 100%. and various other apps that deal with the speed of the sd card and what nots. So, me coming from the Hero is very happy with this phone...
Thank you for sharing your findings... THIS IS SO AWESOME !!!!!

CrashV2010 said:
I have been using the x99 kernal and i have about 1 d and 12 hrs with about 45 % left.. I also have the calibrator apk from the market so it wipes the battery stat when im at 100%. and various other apps that deal with the speed of the sd card and what nots. So, me coming from the Hero is very happy with this phone...
Thank you for sharing your findings... THIS IS SO AWESOME !!!!!
Click to expand...
Click to collapse
Holy crap that is good battery, how often are you using the phone?

Thanks PaulB007. Followed your suggestion and my battery life has DRASTICALLY improved!

PaulB007 said:
Holy crap that is good battery, how often are you using the phone?
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Click to collapse
Medium use.
On my Gingerbreaded Evo-Shifted Premium XDA App.

[Q] best rom and kernal for battery life

i am sure there is a thread on here already for this but i can't seem to find it i am looking for the best kernal and rom combo with the ultimate battery life with also o.c. supportive as well i am wondering what is it that i can do or flash i am currently running g.b. stock rom with a cynobenmod kernal i am wondering what everyone else best experience is also batteries ext. does anyone have a great cheap battery that extended there life on the evo i use tethering about 5 hours a day and i really need that to work to last all day and making 6-7 phone calls thorugh out that day just so you know i am using a evo 4g

if you don't mind AOSP-based ROMs, try Deck's ROM ([6-21-11][ROM] gingerbread-evo-deck [1.2][2.3.4 Stable] - xda-developers) and then flash a Tiamat kernel (I've been using the latest and its been great) ([Kernel][AOSP] Tiamat | 2.6.38.8 | 6/6/11 -xda-developers). You can also try viperboy's undervolt mod [MOD]viperMOD for AOSP Kernels - v3 beta RC2.4 |Updated 6.14.11|*App in Progress!* - xda-developers on top of the kernel...helps out with battery life. Try the -100mv first then step down gradually till your phone is stable again

I agree with cg about decks and viperboys script. I personally get better battery life and performance with savagedzen. Also try underclocking down to 691....I do and notice no slowdown.

I have been using MikG v2.15 and battery life has never been better. Also it is far more stable than the custom kernels with voltage tweakers in my experience.

+1 to what Ronnie said. I like leaving as much stock as possible. I am running MikG 2.2 and never have to worry about a charger.

ronnienyc said:
I have been using MikG v2.15 and battery life has never been better. Also it is far more stable than the custom kernels with voltage tweakers in my experience.
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Click to collapse
I've used MikG, Synergy, KingsROM, etc. (essentially all of the GB Sense-based ROMs that were 2.1/3.0 hybrids). And yea MikG had the best battery life compared to the others but I would only get maybe 12 hours out of it. What are your settings??

I'm with the Deck's crowd here. I use Deck's with Tiamat 3.3.7 (too lazy to try the newer versions), and I don't usually hit 50% battery life till about 18-ish hours off charger with constant texting/Tweetdeck/push notifications and a few phone calls.

I am not using any special settings or tweaks. Using Google sync to access 4 email accounts, etc. Also I unchecked the Always On Mobile Data setting.
It has been 100% stable - no stalls, connectivity issues, or anything like that.
Nice thing about MikG is that it uses Sense.

Decks and the latest tiamat sbc w viper boy....2600 mah battery I'll get 40hrs
Sent from my PC36100 using XDA Premium App

Try MIUI's newest release...not sure what it is off the top of my head. Definitely the best battery life I've ever gotten. Get a solid 15 -16 hours with medium to heavy usage. (fbook,youtube, calls, texting, web browsing, downloading).

Im with you - Im on MikG now I love the ROM but I do not even get 12 hours with a 3500 mah battery. That is on a heavy usage day on low usage days I get 18 houirs. Not horrible but not good. Was actually looking for a sense based ROM with better battery.

Cyanogenmod 7 with tiamat kernel, stable version gives me great performance and stability and GREAT battery life.

Check my sig for my setup, I am currently using my AOSP setup. I get at least a day with heavy usage, stock battery. I use Juice Defender too, it seems to work well, especially with AOSP ROMs.
Radios matter too, if you have high Android System usage or cell standby, flash some new radios.
NANDROID.

jsm927 said:
Im with you - Im on MikG now I love the ROM but I do not even get 12 hours with a 3500 mah battery. That is on a heavy usage day on low usage days I get 18 houirs. Not horrible but not good. Was actually looking for a sense based ROM with better battery.
Click to expand...
Click to collapse
Try unchecking Always On Data.

Miui with tiamat kernel

I'm currently running miui 1.8.12 with tiamat kernel 4.0.6 and getting bad battery life. I flashed tiamat because I red it improved battery life. I have an extended battery and only getting 7 hours with light usage. I have tried several of those battery tips but not much improvement any ideas. Also tired installing setcpu from here but it won't install.
Sent from my PC36100 using XDA App

lurk24 said:
I'm currently running miui 1.8.12 with tiamat kernel 4.0.6 and getting bad battery life. I flashed tiamat because I red it improved battery life. I have an extended battery and only getting 7 hours with light usage. I have tried several of those battery tips but not much improvement any ideas. Also tired installing setcpu from here but it won't install.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Most of us are using the 3.3.7 kernel. MUCH better than the 4.06

I will try and give that one a try then. My battery already down to 70% and its been running for only 2 hours. I figured with an extended battery I should be getting better time then what I am.

At the end of this, I wrote really good technique for conditioning your battery. It helps!
http://forum.xda-developers.com/showpost.php?p=16700938&postcount=30

lurk24 said:
I will try and give that one a try then. My battery already down to 70% and its been running for only 2 hours. I figured with an extended battery I should be getting better time then what I am.
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which one are you running the sbc or regular kernel. I can tell you this with an extended battery my battery life with a custom kernel is not noticeable. I do notice better battery life though with my regular battery and sbc kernel from Tiamat

playya said:
which one are you running the sbc or regular kernel. I can tell you this with an extended battery my battery life with a custom kernel is not noticeable. I do notice better battery life though with my regular battery and sbc kernel from Tiamat
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Click to collapse
SBC is the way to go. Ignore the fear mongers still holding onto 1 year old scare stories about SBC. It's lovely to NOT have that 10% drop in the first 15 minutes....

How much battery time you getting, and are you using setcpu also?

lurk24 said:
How much battery time you getting, and are you using setcpu also?
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Click to collapse
I use overclock widget and have preferred that over setcpu from day 1. I honestly can use my phone a full day of txting calling emailing and some streaming music. I also use juice defender and have it set to only use internet on specific apps. Although I do have it on wifi all day at work and home.
With this said I can last a full day on my regular battery no problems. I also have the 3500 extended and although I can do 30 hrs on it, it does seem to suck battery life faster than expected but my stock battery does not tails off as fast IMO...
stock - 18 - 20 hrs
extended - 24 - 32 hrs

playya said:
I use overclock widget and have preferred that over setcpu from day 1. I honestly can use my phone a full day of txting calling emailing and some streaming music. I also use juice defender and have it set to only use internet on specific apps. Although I do have it on wifi all day at work and home.
With this said I can last a full day on my regular battery no problems. I also have the 3500 extended and although I can do 30 hrs on it, it does seem to suck battery life faster than expected but my stock battery does not tails off as fast IMO...
stock - 18 - 20 hrs
extended - 24 - 32 hrs
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Click to collapse
Not bad, though I can get your extended battery life on my stock battery, xp. And personally I underclock, and use only the governor setting built into CM7.

teh roxxorz said:
Not bad, though I can get your extended battery life on my stock battery, xp. And personally I underclock, and use only the governor setting built into CM7.
Click to expand...
Click to collapse
I always wondered what setup you were using, Roxx

Playya, Your battery stats are alot better then what I'm getting. Imma try that widget program you talking about.

Can't seem to find over clock widget in the market.

Can't seem to find overclock in the market

lurk24 said:
Can't seem to find overclock in the market
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lurk24 said:
Can't seem to find overclock in the market
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Click to collapse
http://www.appbrain.com/app/overclockwidget-(need-root)/org.freecoder.widgets.overclock

lurk24 said:
Can't seem to find overclock in the market
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Click to collapse
did you find it. May I also suggest Ultimate juice defender with your settings for internet to only come on when needed and wifi on location
Overclock Widget

I'm running MIUI 1.8.5 and that came with CM Kernel 2.6.37.6 built in....Should I be switching to a different kernel??

You don't HAVE to switch, but a lot of us get better performance out of the custom kernels

I did decide to update....I went with the same one you have....3.3.7 w/ SBC, and I see a very noticeable difference in battery life....Thanks for the suggestion!

Evo4gLI said:
I did decide to update....I went with the same one you have....3.3.7 w/ SBC, and I see a very noticeable difference in battery life....Thanks for the suggestion!
Click to expand...
Click to collapse
No prob. It gets better after a few days, too

HipKat said:
No prob. It gets better after a few days, too
Click to expand...
Click to collapse
I have a follow up question though....I also have SetCPU...should I just be letting the smartass governor do its thing, or are there better settings to have?

Best Battery Life..

Hi, let me first say sorry for this post. I know there are a million..
I do not have a Inc but my daughter does, last time I messed with it, I put CM7 rc3 on it right when rc3 was released. ever since then I have not read one word on the development of this phone. The phone runs good but battery life could be better.
Is there anything better than CM7? looking for the best battery life possible. Please suggest ROM/Kernel. sense or senseless.
Thanks,

Coming from an avid user of Sense I would say CM7, MIUI, and OMGB or OMFGB are the "best" with battery as they are stripped of Sense. If you don't get good battery life with any of those AOSP roms, kernel combo or not, there isn't much more anyone can do.
I only use Sense roms but I know if battery life & Senseless were my thing, I would have an AOSP rom. Not sure on kernels, the crowd can fill you in on their experience.

Best bet would be to flash incredikernel, and then dl incredicontrol from the market. Stick with cm7, use the underclocking app of your choice, and then use incredicontrol to lower the voltages at different frequencies...if it reboots, go one back until its stable.

baboonsRus said:
Best bet would be to flash incredikernel, and then dl incredicontrol from the market. Stick with cm7, use the underclocking app of your choice, and then use incredicontrol to lower the voltages at different frequencies...if it reboots, go one back until its stable.
Click to expand...
Click to collapse
There's still other options like upgrading to a 1900mAh battery (still fits in stock casing)

POQbum said:
There's still other options like upgrading to a 1900mAh battery (still fits in stock casing)
Click to expand...
Click to collapse
That's what I did, lasts me all the way through the day now lol. Its a snug fit, but it fits.
Sent from my Droid Incredible running some random CM7 nightly.

I would suggest flashing the newest CM nightly. There have been some changes and kernel tweaks since rc3.
I'm on 10 1/2 hours sitting at 70%, albeit light use, but still I usually get at least a day and a half with moderate use.

I'm a big fan of Jermaine's In-Sensitive Minimalist ROM. It has by far been the fastest and best on battery life for me.

I'm on the latest cm nightly. I use incrediblekernel with aggressive voltage. I have CPU set to 128 min and 664 Max. I could last all day plus with moderate to heavy usage.
Sent from my ADR6300 using xda premium

paboater76 said:
Hi, let me first say sorry for this post. I know there are a million..
I do not have a Inc but my daughter does, last time I messed with it, I put CM7 rc3 on it right when rc3 was released. ever since then I have not read one word on the development of this phone. The phone runs good but battery life could be better.
Is there anything better than CM7? looking for the best battery life possible. Please suggest ROM/Kernel. sense or senseless.
Thanks,
Click to expand...
Click to collapse
Pretty much the same discussion going on here: http://forum.xda-developers.com/showthread.php?t=1265028
IMHO - I'm getting a ton more life over stock on this one: http://forum.xda-developers.com/showthread.php?t=1265028
http://forum.xda-developers.com/showthread.php?t=1247253
Plus - one of the 1900maH batteries from htcexpress is a very worthy investment !
Dan

Mcsense 2.2 with tinys 8/31 kernel with smartass. Rom looks great and fantastic battery. Personally, ill never use aosp on my phone again. Never had that "great" battery life others claim. I can overclock tinys to 1.113, minimum 245, and its very stable, very fast, and i get a good 12+ hours with HEAVY use. Thats on a stock day one battery. Ive got about as old a dinc you can get, been rooted longer than i can remember, and flashed atleast 3 to 4 times most weeks. Tryin out newts new runny rom now, dont know about battery yet on it. Good luck dude.
Sent from my Droid Incredible 3D using XDA App

Thanks everyone for the replies, I'm going to try the latest CM7 nightly... I think

at4r1 said:
I'm a big fan of Jermaine's In-Sensitive Minimalist ROM. It has by far been the fastest and best on battery life for me.
Click to expand...
Click to collapse
I'll second this. In-Sensitive Minimalist takes out almost all of the bloat of Sense, but leaves in the framework and the best apps. With Tiny's modules and SetCPU you can basically get it to run for days with minimal usage and 24-30 hrs with normal usage on a 1500mAH battery, which are $10 from Amazon.com and a good deal.
If you want to stick with Sense, that's the ROM to use. Otherwise, CM is a good choice.

Battery life absolute trash?

So my N7 arrived two days ago, and I immediately unlocked, rooted, and flashed some things. Currently running Codename Android with Trinity Kernel.
My battery is absolute crap now though. Its been two days so I thought the battery more but have settled by now. All auto sync off, brightness at lowest setting, apps sync every 4 hours, still bad! Does calibrating still work? I read somewhere that it was debunked and it didn't work. I would appreciate any help. I mean, my Maxx is getting better battery life.
I uploaded some screenshots of the battery after only 1 and a half hours.
Sent from my Nexus 7 using Tapatalk 2

dafuq?
My Battery life is without doing nothing ~1-2weeks (in my with 58% xD)
Use Stock Kernel

renes2 said:
dafuq?
My Battery life is without doing nothing ~1-2weeks (in my with 58% xD)
Use Stock Kernel
Click to expand...
Click to collapse
Where can I find that to flash it?
Sent from my Nexus 7 using Tapatalk 2

Aliceics said:
Where can I find that to flash it?
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Go to the motley kernel thread in Original Development. He provides a mirror link for the stock kernel
I loved Trinity and the TKT app but for some reason im getting much better battery life with motley kernel. I originally did some troubleshooting and fixed some apps that were causing wakelocks. My battery life got a little better but not by enough (could only get 3 or 4 hrs screen on) so i switched kernels.
If you feel like experimenting do this:
Nandroid
Wipe Cache + Dalvik
Wipe System
Factory Reset
Flash CM10 nightly (any rom of your choice)
Flash GApps
Flash motley kernel (i used the 484 GPU version)
Fix permissions
Reboot
I get awesome battery life now and performance is great.

Your title should be something like this: "After rooting and installing battery draining rom and kernel I get bad battery life on my N7"
Stock JB and kernel should yield decent batter life.
With the proper rom and kernel the Nexus 7 easily match or better the googles battery life claim.
FYI the latest Trinity kernel is a battery hog.

noobandriod said:
FYI the latest Trinity kernel is a battery hog.
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Click to collapse
if you use it at 1.7ghz it will be, but thats obvious. at 1150mhz, its as quick and wonderful on batteries.

simms22 said:
if you use it at 1.7ghz it will be, but thats obvious. at 1150mhz, its as quick and wonderful on batteries.
Click to expand...
Click to collapse
I wouldnt go as far as saying its a battery hog, but i ran the kernel at stock clocks and while performance was much better than stock i still had tons of drain that i now dont have with a different kernel.

Ran Trinity kernel at 1150mhz and had awful battery. Back on stock ROM and kernel and seems to have improved a lot.
Sent from my Nexus 7 using xda app-developers app

I feel like the battery is pretty decent...
Get off those custom Roms and kernels until you understand how the device is meant to perform.

You appear to have 87% after 1.5 hours, that equals about 10 hours, how is that bad? I get about 8 hours if I am intensely playing with screens, apps and games, 2 days if I'm not doing much. Loses 2% at night with wifi off. No root.

trinity kernel and the pure aosp rom, at 1150mhz. id say not bad at all..

Trinity Kernel is a good kernel. I went overboard by saying it was a battery hog. I did have it overclocked up to 1500hz on-demand and it ate up battery faster then I would like. But this is with the newest one, a few of the older ones worked out better for me though.

noobandriod said:
Trinity Kernel is a good kernel. I went overboard by saying it was a battery hog. I did have it overclocked up to 1500hz on-demand and it ate up battery faster then I would like. But this is with the newest one, a few of the older ones worked out better for me though.
Click to expand...
Click to collapse
yea, overclocking is mostly for fun, definitely not for battery life

640k said:
Get off those custom Roms and kernels until you understand how the device is meant to perform.
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Click to collapse
I have some problems with *wakelock*