APC RBC133 Compatible Replacement Battery Pack by UPSBatteryCenter 100% Compatible replacement battery pack for APC RBC133 Battery pack compatible with: SMT1500RM2U, SMT1500RMI2U, SMT1500RMJ2U, FJT1500RMI2UNC, SMC2000I, SMT1500RM2UTW, SMT1500RMI2U, SMT1500RMUS Arrives fully charged and ready to go - (1) Year Replacement Warranty! Easy Installation - Plug & Play - Hot Swappable - No downtime required Manufactured & sold exclusively by UPSBatteryCenter