Tripp Lite RBC36H UPS Battery Pack - Leak Proof/Maintenance-free - 3 Year Minimum Battery Life - 5 Year Maximum Battery Life

Carefully screened and certified to restore UPS runtime to original specs Leakproof internal battery requires no regular maintenance Replacement battery backup for select Tripp Lite AVR550U andAVRX550U UPS systems Compatible with AVR550U orAVRX550U UPS that shipped with 12V 3.6Ah battery Ships fully assembled and ready for immediate installation to prevent downtime