External 48V ups battery cabinet provides extended runtime during an outage. Compatible with liebert gxt5-1500lvrt2uxl (1500 VA) and liebert gxt5-2000lvrt2uxl (2000 VA) ups systems. Auto detection connectivity ensures proper set-up and configuration of available run time. Compact 2U rack mounted, with external temperature compensation sensors that extend battery life. New firmware now avilable to reduce fan speed and noise issues