Tripp Lite's premium UPS replacement battery cartridges breathe new life into UPS systems suffering from expired or weak internal batteries. Each replacement battery cartridge is carefully screened and certified to meet or exceed original specifications and ships ready for installation into your UPS system. Reusable packaging holds expired batteries for recycling center delivery. See Tripp Lite's UPS replacement battery web page to confirm compatibility and quantity required. Includes 18-month warranty. COMPATIBLE WITH TRIPP LITE MODELS SMART1500RMXL2USMART2200RMXL2U SMART3000RM2U SMX3000XLRT2U (versions with pre-assembled 4-battery cartridges only; see compatiblity listing for non-assembled battery versions) SU1500RTXL2Ua SU2200RTXL2Ua Restores UPS runtime performance to original specifications Comes pre-assembled and ready for installation Reusable packaging holds expired batteries for recycling center delivery Includes 18-month warranty Package Includes One pre-assembled battery pack consisting of four 12V batteries