So I bought this phone 2 days ago. Previous to this I had an LG Optimus, which I could get 2 days worth of battery before needing a charge. So I used that as a benchmark.
Arrive at work this morning and my battery is already in the high 80s, with it draining fast. Like 15% per hour. I decided to check the battery stats and showed that Android OS was using way too much CPU for the little time I used the phone.
I downloaded betterbatterystats to see what was happening. Enabled Power Saver feature with CPU throttling only.
Started to read around and a lot of people were complaining about services like gtalk, facebook, etc. Deleted a lot of bloat services that are included with the stock rom. This seems to have done it.
The battery curve was going down hill pretty fast. Android System using 50%+ of the CPU. (this is relative to all other services).
Now the battery isnt draining as fast as it was this morning, and CPU usage is starting to level out.
Ill give it a few days see how it works out. This morning this thing was eating 15% an hour. Now Its just doing about 5% an hour.