I am having a very quick discharge of my battery
and I have the bare minimum running. I called Customer Service to get a new one and they suggested the following FWIW:
1. Out of the box, charge it with phone off until full
2. Run the battery until the phone dies and recharge it overnight. Do this 3 times!
3. Install and use Advanced Task Killer (I've heard this is not a good idea)
4. Do not leave the phone idle for extended periods of time (no idea what that time is)
5. Do not charge the phone continuously for more than 24hours.
6. Keep it plugged into your USB port on your desk when you can (like we're all tethered to a PC or something 24/7)
I personally don't think this is necessarily the best way, but she was reading off of something that was specific to the Droid X.