Apc - Schneider RBC59, Replacement Battery, Up to 3-5 Years of Battery Life, Maintenance-Free & Leakproof Design, 336 VAh Capacity, Includes All required connectors, Battery recycling guide, Installation guide, Reusable packaging. UPS back to life with the Replacement Battery Cartridge #59 from APC. Designed to work with compatible APC power supplies, this is a maintenance-free and leakproof Lead-Acid battery.