HP ProLiant DL360 G4p Server - Manual (Page 90)

90 HP ProLiant DL360 Generation 4p Server User Guide
5. Remove the battery.
IMPORTANT: Replacing the system board battery resets the system
ROM to its default configuration. After replacing the battery, reconfigure
the system through RBSU.
To replace the component, reverse the removal procedure.
For more information about battery replacement or proper disposal, contact an
authorized reseller or an authorized service provider.