My experience with battery life after having the phone for one day: Having second thoughts about keeping the phone.
For example: After the third full charge, took the phone out with me this morning:
9:00 AM @ 100%.
Major activities: checking emails, surfing the web.
9:35 AM @77%
How could that be????
2:00 PM @ 21%
Major activities between 9:35 AM and 2:00: 1 phone call, more email checking, and web surfing.
I had made the adjustment recommended in this thread before seeing it; the battery was already going, going, gone, so will have to check it out after another full charge.
Notes: Screen timeout - 1 min; to best of my knowledge (based on battery usage details from phone), only basic apps consumed the battery, i.e., Android system 60+%, Internet and phone standby - negligible. Also, GPS is off.