Amazon.com: APC UPS Battery Replacement, RBC7, for APC Smart-UPS Models SMT1500, SMT1500C, SMT1500US, SUA1500, SUA1500US, SUA750XL and select others, Black,1 Count (Pack of 1) : Electronics
Amazon.com: New Battery Pack for APC Smart-UPS X 1500VA Rack/Tower LCD 120V SMX1500RMUS Compatible Replacement by UPSBatteryCenter : Health & Household
Battery kit for APC Smart UPS C 1000 & APC Back UPS Pro 1200/1500 replaces