[HTC Sensation] denverpedro:
Battery life

So honestly, I got very frustrated with battery life on CM7 based ROMs with my Sensation (I was coming from a Nexus One where CM7 was rock stable and awesome battery life) that I almost gave up. I think the major issues were eventually worked out by the CM team although honestly the fact that this ROM is stripped down to the basics for performance I think helps battery life as well and I love it (HUGE kudos, thanks and as soon as I can spare it... donations to kristofpetho for all the time and effort on this ROM it's awesome)

So my "solution" honestly was to back up my apps and do a full wipe which for me includes:

- Wipe data/Factory reset

- Wipe cache

- Wipe Dalvik Cache

- Format /system

Then I installed this ROM, including the Gaaps of course (I use the version with video in Gtalk even though I haven't used it just yet). From there you can flash anything else you want; I've installed the FM Radio as I like to use it from time to time and I also installed the GPS fix as without it my GPS was taking forever to lock on; now it's a matter of a couple seconds typically. FYI, once I install a new ROM or add-on/patch whatever I always run fix permissions; not sure why but with this ROM the first time you run it the fix seems to take a while (subsequent runs take 1 second or less). I'm not sure if it makes a difference or not but I've been doing this long enough and seen random quirky things get resolved by that simple step that I always do it proactively even before I boot into the ROM for the first time.

I didn't do anything else fancy (I had tried various kernels and under-volting, etc. with other variants of ROMs or earlier versions of this one all with no success). So this time around I left it basic and it just worked. I've been hesitant to modify anything since it's working so well for me although I'm very close to updating to the 1.0 ROM (I'm on 0.9 now) and Faux kernel since I hear so many good things about battery life and performance with that combination.

Sorry I can't give you anything more specific; my advice is start basic... install the ROM and then don't bloat it up with a ton of apps out of the gate. Install the basic stuff you need (for me that's a corporate e-mail app, I like the Chomp SMS client, Gmail, Facebook, Foursquare and a few other apps I use for work like CamCard, ShareYourBoard, Starbucks Coffee Card app, etc.). I left it like that for a while and then slowly started re-installing anything else as I needed it. I was trying to narrow down if any particular app was causing a problem but so far I haven't been able to identify an app and I have yet to get anything but great battery life.

As an example I'm 4 hours off the charger today and that includes checking e-mail, checking facebook and posting a few things; checking in at a few locations on Foursquare, about 90 minutes of listening to music while I was at the gym (Local MP3, not streaming) and probably about 20-30 minutes of phone calls. Also that last post was via tapatalk on my phone as I was catching up on this thread from the phone itself. Right now I'm at 91% battery. I'd call that moderate use (most of the "use" was with the screen off even though I was listening to music) but if I can use the phone moderately for 40 hours (at that burn rate) I'd consider that pretty solid battery life. I do see significant drain when I'm browsing, searching, using GPS/Maps to navigate and such but normally I'm doing those things minimally throughout the day anyway.

Hopefully that gives you some information; I don't think I have a silver bullet... that is other than if you need great battery life don't bloat the device up with a ton of apps :-)

Good luck.

-Pete.

---------- Post added at 01:24 PM ---------- Previous post was at 01:17 PM ----------

Sorry for the long post... one quick update though. All of that battery life I just described is on the Anker battery, which I will admit doesn't map directly to the factory battery. That being said, with about the same use I'd probably expect the factory battery to be at about 85% (obviously that's a SWAG estimate but for what it's worth).

-Pete