Vertiv Liebert PSI5 24V External Battery Cabinet | 2U Lead Acid 9 Ah - Designed for Vertiv Liebert PSI5-800RT120 and PSI5-1100RT120

You can connect to 6 battery cabinets to a Vertiv Liebert PSI5 UPS. The batteries are valve-regulated, non-spillable, lead acid and should be kept charged to attain their design life. Extended warranties are available for 1 year (1WEPSI5-24VBATT) and 3 years (3WEPSI5-24VBATT). External battery cabinets provide longer battery run-time for connected devices.