Originally Posted by psantucci
Check your GPS settings. I have found when I'm in a remote area my battery drains very fast if Location Aiding is Enabled. Try turning it off (or even turning off your GPS) and see if that makes a difference.
I have not found that GPS is a real drain on the battery. Now if you are running a map with it, then yes.
The 2 biggest drains are switching between 3G ans 2G looking for a signal and data intensive apps running in the background. Third on the list would be the backlight on the screen.
See the FAQ article for tips and tricks to use.