Tripp Lite's BP240V500C External Battery Pack with built-in 7A charger offers extended battery runtime when used in conjunction with compatible Tripp Lite UPS systems. Includes 15ft / 4.6m cable to connect to UPS or additional battery pack. COMPATIBLE UPS SYSTEMS: SU20K3/3, SU30K3/3 and other Tripp Lite UPS systems specifying the use of this battery pack