APC Smart-UPS X 120V External Battery Pack Rack/Tower - Battery enclosure - 2 x battery - lead acid - 2U - black - for Replacement Battery Cartridge #118

Hot-swappable batteries. Ensures clean, uninterrupted power to protected equipment while batteries are being replaced User-replaceable batteries. Increases availability by allowing a trained user to perform upgrades and replacements of the batteries reducing Mean Time to Repair (MTTR) Scalable runtime. Allows additional run time to be quickly added as needed. Intelligent battery management. Maximizes battery performance, life, and reliability through intelligent, precision charging. Rack/Tower convertible. Protects the initial investment in the UPS when migrating from tower to rack-mount environment. This product is heavy and/or oversized and may need more than one person to handle.