For everyone trying to tweak their battery life, have a look at the graph below. It's pretty interesting to see the differences between the 3G and 2G radios when idle, which looks negligible.

The above was from a Google presentation last year, the full video and slide pack are available via the link below. I found it really interesting, but the video is over an hour long!
http://code.google.com/events/io/2009/sessions/CodingLifeBatteryLife.html

The above was from a Google presentation last year, the full video and slide pack are available via the link below. I found it really interesting, but the video is over an hour long!

http://code.google.com/events/io/2009/sessions/CodingLifeBatteryLife.html