[EVO 4G Android Development] MSmith1:
Ok, I'm back with day 2 of my battery recalibration and monitoring.

As I reported yesterday, I felt, and still feel, that I am on the road to achieving acceptable battery life with this rom. Yesterday I was able to get 2hrs 40min 54sec of screen on time and 20hrs and 29min of time since unplugged time which took me down to about 4-5%. That was definitely not bad considering what I used to get with this rom. That run included a little bit of WiFi so for my next run, I decided that I wanted to go with a completely 3G run which I am still in the midst of.

As of right now I am at 13% battery life with 2hrs 5min 26sec of screen on time and 18hrs 17min and 22sec of time since unplugged time. I could probably squeeze out another 15 to 20min of web surfing time over 3G. The time since unplugged time is about 7 hrs while I was sleeping and 10 hrs of out of bed time which includes 40 minutes of playing music at the gym with the screen off. EDIT: forgot to mention that this screen on time is 85% surfing via 3G, 5% going back and forth on Talk, 5% looking at my emails, and 5% other things like downloading from the market/looking at twitter/playing around with my screens, etc.

In this run 3G has been on the entire time. Always on mobile data has been on the entire time. Auto sync has been on the entire time. Background data has been on the entire time. I am syncing two gmail accounts. Talk has been on and signed in the entire time. Seesmic has been polling every hour. My weather widget has been polling every 3 hours. I have the Jorte widget on a screen. I have the Nexus 1 LWP on constantly as well. As I have mentioned plenty of times, I will never gimp my phone and I will treat it like the smartphone that I paid grip for.

My setup is very basic and I am not taking any measures to preserve battery. I am using CM6 8/2, Snap 4.0cc, SU 2.1, and the updated hosts file. I do not have setcpu installed. I do not have any juice defending program installed. I do have a ATK installed but I don't use it. I have autokiller installed and I am using a preset that I like.

I do believe that I can do better with a little tweaking.

If you are not getting something around this battery life, give or take some screen on time/standby time, something is wrong with your set up. I assume that I could probably cut my standby time by 3 hrs, to 15hrs, and squeeze out another hour of 3G screen on time, to 3hrs, or something like that, you get the point.

Like I said, I could probably do better with some tweaking and using WiFi when I can.

BUUUUUUUUUUUUUUUUUUUUUUUUUUUUTTTTTTTTTTTTTTTTT

As I mentioned yesterday, using the phone as a dumb mp3 player, takes way more battery life than I would expect it to. I lost 7% in 40 minutes of playing music with the screen off and in airplane mode. To me that is a bit excessive. I would expect to loose no more than 3% during that time. If I remember correctly, none of the 2.1 roms that I used in the past, including 2.1 stock, have ripped through my battery like that. I would love to find out why the hell this happens as it could really improve my battery time. I'm going to do some more testing to see how I can get this more stable. Maybe Cyan can look into this because I have experienced this several times and it is not an isolated issue.

So that is that. I still think I can get better battery life but at least I am getting somewhere and I don't want to throw my phone into the Atlantic.