Compaq BL20p - HP ProLiant - 512 MB RAM Setup And Installation Manual page 100

3. Remove the existing battery:
a. Press the locking tab (1).
b. Lift the battery away from the battery holder (2).
Figure G-2: Removing the existing battery
4. Install the new battery.
Figure G-3: Installing the new battery
Compaq ProLiant BL20p Server Blade Setup and Installation Guide
System Battery
G-3