Battery kit for APC Smart UPS 750 replaces APC RBC48
APC Smart-UPS, Line Interactive, 1000VA, Tower, 120V, 8x NEMA 5-15R outlets, SmartConnect Port+SmartSlot, AVR, LCD - APC USA
APC BY SCHNEIDER ELECTRIC Replacement UPS Battery For Mfr. No. SUM1500RMXL2U, SMT2200RM2U, SMT3000RM2U, SUM3000RMXL2U, 48V DC - 426P04|RBC43 - Grainger