Palm Pre P100EWW - Manual (Page 161)

Chapter 11 : Troubleshooting 161
4 Press and release the back cover release .
5 Slide your thumbnail or a credit card between the back cover and the
phone, starting at the bottom and moving halfway up one side until
you hear the clasp (x) release.
6 Repeat step 2 to release the clasp (y) on the other side of the phone.
7 Lift off the back cover.
8 Remove the battery by pulling the tab that appears at the top of the
battery.
9 Insert the new battery .