HP R12000 User Manual page 45

Switch the circuit breaker on the battery pack right to the On position.
4.
The DC to DC power cable is a UPS option required for connecting battery packs. The cable can be ordered
on the HP website (http://www.hp.com/go/rackandpower) (HP part number AF497A).
Connecting the 3U battery pack to the 2U power unit
IMPORTANT:
connection. The UPS does not recognize the battery pack if the screws are not tightened.
To connect the battery pack to the UPS from the rear panels:
Switch the circuit breaker on the battery pack left to the Off position.
1.
Connect the power cable on the UPS to the power connector on the battery pack.
2.
Use only the Phillips 6-32, .375 screws provided in the kit to secure the
Installation 45