Cyanogen 6.1.2 [evo] with trickle kernel gives phenomenal battery life. 5 hours of pretty moderate usage and I'm down 8%
forum.cyanogenmod.com/files/file/202-update-c...Posted Jan 2, 2011, 5:30 PM UTC
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forum.cyanogenmod.com
It's a universal kernel so it should work on most ROM's. Yesterday I was at work, took it off charge at 9am and by 6:30pm it was barely at 90% with moderate usage (texting, reddit, etc.) This mod definitely does help with battery life.
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which one are you using?? no undervoltage? less? more??
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More undervoltage.
(also why is this being downvoted?)
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which kernel are you using? I'm on 2.6.35.9, savage kernel beta1. I lost bout 2% battery letting it sit for about 9 hours overnight.
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LCastillo CM
added: here is the link: http://forum.xda-developers.com/showthread.php?t=876590
AOSP Builds v7 12/25/10 - SBC for BC's Kernel SBC-bcnice-stable-v7.zip (2.62 MB)
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That's the same kernel I'm using with MIUI. Amazing results. I was stunned when after using it normally through the day I wasn't even to 75% by like 6pm.
I'm running on an EVO as well.
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I'll give it a shot.
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Thanks for posting this. I didn't realize cyanogenmod 6.1.2 was even out yet (I was running 6.1.1), and I have been having problems with my battery. I've tried this all day now and it's running wonderfully.
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Awesome. Glad that it worked out for you also. That kernel is like magic.
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Have to ask..how do you update the battery kernel? I keep hearing about it but I have no idea how it works.
Do you just update the last custom rom and the battery kernel also update itself or you have to do it manually?
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You need to have a custom recovery mode first. If you rooted your evo the normal way this should be the case, if you used unrevoked I am not sure it is. If when you get to recovery mode you see a menu with options (flash zip, wipe, etc.) than you have a custom recovery. If you have a flashed a rom before you have a custom recovery.
Once in recovery mode perform a nandroid backup. This will let you restore your phone should anything go wrong. Next, perform a dalvik-cache wipe. This should be under the wipe menu. Next flash the downloaded .zip file with the kernel in it. Reboot your phone and you are good to go. If anything went wrong, reboot into recovery, wipe data, cache and dalvik-cache and perform a nand(roid) restore from the backup you made earlier.
The rom itself will remain unchanged. This will probably be in the next CyanogenMod release but it isn't in the current stable build.
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It's just a regular kernel with a battery mod, you flash (clear cache etc first) just like you'd flash any otherzip.
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Isn't trickle-charging deleterious to battery health and life? I've read that it will shorten the battery lifespan significantly.
See: http://forum.xda-developers.com/showthread.php?t=871051
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Man, I wish I knew what I'm doing wrong. The battery life on my Evo has been pretty deplorable from day one (currently running latest Cyanogen, I use SetCPU, etc.).
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Honestly, I don't tinker around with SetCPU. What kernel are you using? What kernels have your tried? From my personal experiences, I think kernel has a lot to do with battery performance.
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I haven't ever messed with kernels by themselves. I thought cyanogen came with its own kernel that's supposed to be pretty good, but maybe that's not the case?
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What are your profiles in SetCPU?
There are several types of kernels, low voltage and ultra low voltage. You'll have to play with them to figure out if your phone will be stable when using them. At the very least I think Cyanogen is using a low voltage kernel, but others might be better.
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Re: SetCPU, I first and foremost have a profile that says if the screen is off, underclock as much as possible. When in use, underclock somewhat. If plugged in or fully charged, overclock slightly.
Might have to try some other kernels, thanks for the info.
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When I was using SetCPU, I was experiencing daily freezes (often upwards of 5 minutes!) and forced-reboots. Initially, I wasn't sure what was causing the issue, and continued to endure these crashes/reboots for over a month. Finally, I was fed up and began to look into the issue and realized that others were experiencing similar problems. Their solution? Remove SetCPU. I removed it, and I haven't experience a lock-up, freeze, or forced-reboot since.
That said, give it a shot. If you experience the issues I wrote about above, just dump it.
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I'm not seeing the FC issues with SetCPU, but I tried uninstalling it for a but and we'll see what happens
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This is evo specific, not sure if Nexus one has the same trickle issues.
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I've tried CM6 on my Evo before and I always get terrible battery life; like 10% per hour. Mind sharing what kernel you are using (and if you've made any changes from stock 6.1.2)?
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See the post above... it's the trickle kernel.
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Slightly off topic here, but I'm running CM 6.1 on an Incredible, can anybody recommend a good kernel for epic battery life for me?
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Running the same software on the Inc vs Evo should give you similar results.
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Personally, I am done modding my SS Vibrant until Cyanogen works for it. I'm waiting. Period.
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6.1.2 and down 9% in 6 min on my EVO.
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In what situation? If it drops 10% right off the charger, that's normal behavior since keeping the battery at 100% would kill its lifespan.
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I haven't been able to find a list of what does NOT work on the EVO with CM. I was thinking of using a while ago but there were still a few dealbreakers like no camcorder. A big plus (for me) is wiimote connectivity, I'd love to have that.
Can anyone give me a brief list of the major gotchas? 8MP pictures? 720p video recording?
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Camcorder on cm6 for evo works. Only thing I know of that don't work is HDMI out and 4g. I don't use either so don't miss them.
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Excellent, thank you. I don't use those either so I guess I'll try it out.
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Cyanogen mod has been giving lots of FCs on Google apps, mainly Maps and Market. Also, the USB connection has been iffy and it kept un-mounting the card as I was trying to import photos to my PC.
I really enjoyed the speed of Cyanogen but I can't spend hours trying to fix problems with basic google apps to no avail. They need to find a fix once and for all.
Small request: Please update on the battery life and whether the gains are actually that great or just false battery reporting. I'm going to hold off on cyanogen till Gingerbread and possibly an updated Gapps suite.
Sure, I'll give an update. I'm working the battery hard right now too because as I'm sitting here I've also been streaming a podcast...so, when I update it I might qualify it by saying heavy usage rather than moderate usage.
added: After 12 hours and 20 minutes I'm down to 58%. I should add that this is with an extended, 3500 mAh battery... so, with the regular 1500 battery I suppose I'd be about done by now.
Since this experiment started, I have been using the phone including streaming podcasts, watching youtube, and talking...so, it's been getting a pretty good work out.
For me an Evo with stock battery and stock sense is a deal breaker. With cyanogen, trickle kernel, and extended battery it is a truly marvelous device.
added: After 26 hours and 16 minutes I'm at 26%. I slept for part of that time obviously. But, you know...I don't need for a battery to last 26 hours because normally I'll plug it in while I'm sleeping.
So, the lesson for me is that people should really stop complaining about Evo battery life. Sure, if you're running Sense out of the box, things are going to suck. But, root, flash, buy an extended battery for 20 bucks and battery problems are solved.
I've also had issues with 3G/radio since 6.1.1 (and in 6.1.2), and some weird messaging bug where it takes forever to load messages. Both are issues I've heard of other people having, as well... still sticking with CM though.
You realize you can get GAPPS packages in lots of places and Cyanogenmod's aren't necessarily the most up-to-date, right? For instance, here (bottom of the first post) is a link to a set of them that seems to be dated 12/28, over a month more recent than the one Cyanogenmod has for download. I don't have an Evo, so please do Nandroid first, but you should at the very least be able to install the GAPPS for any non-Sense ROM on Cyanogen (and possibly the ones for Sense ROMs as well).
Lol. And anyone who knows anything about anything, knows why those problems are occurring and know both ways of fixing them.
What a helpful comment. The Reddiquette says I can downvote you.
Not everyone is an Android programmer/hacker/modder and I only gave up after reading over 10 thirty-page-plus threads on these issues where a dozen different users claimed to have a solution that eventually did not work for me.
Next time maybe try to be less of a douche and either offer help or remain quiet.
sounds like you were at droidforums. lol, you got the help you were looking for if you were looking there.
Only frquent XDA actually. Keep being a d. bag.