CyberPower"s BP48V45ART2U Battery Pack offers extended run-times for the PR1000LCDRTXL2U UPS. This 2U pack esthetically match the UPS"s, and can similarly be rack or tower mounted. The heavy gauge power cord is adapted with plug-n-play DC connectors for easy installation. The all metal enclosure safely houses the 8 (eight) 12V 7Ah batteries which are connected via 2 strings of 4 in serial.