HP R12000 User Manual page 46

Connect the CAN bus communication cable from the DB-15 connector on the UPS to the DB-15
3.
connector on the battery pack.
Switch the circuit breaker on the battery pack right to the On position.
4.
To install a second battery pack that is the same battery type and rack U height:
Verify that the circuit breaker on the battery pack is in the left, Off position.
1.
Connect the DC to DC power cable from the first battery pack connector to the second battery pack
2.
connector.
Up to two packs can be connected to the UPS.
Connect the CAN bus communication cable from the first battery pack to the second battery pack.
3.
Installation 46