HP ProLiant DL580 Generation 3 User Manual page 73

IMPORTANT: The battery pack may have a low charge when
installed. In this case, a POST error message is displayed when the
server is powered up, indicating that the battery pack is temporarily
disabled. No action is necessary on your part. The internal circuitry
automatically recharges the batteries and enables the battery pack. This
process may take up to 4 hours. During this time, the cache module will
function properly, but without the performance advantage of the battery
pack.
NOTE: The data protection and the time limit also apply if a power
outage occurs. When power is restored to the system, an initialization
process writes the preserved data to the hard drives.
To install the BBWC battery pack and cache module:
1. Power down the server ("Powering down the server" on page 37).
2. Extend the server from the rack, if applicable ("Extending the server from the
rack" on page 38).
3. Remove the access panel ("Removing the access panel" on page 40).
4. Remove the system cage ("Removing the system cage" on page 42).
IMPORTANT: The BBWC cable is wound around the battery pack.
Unwind the cable to the appropriate length before installing the battery
pack assembly into the server.
5. Install the battery pack assembly into the server.
6. Route the cable along the system board.
Hardware options installation 73