12V 9Ah SLA Battery Replacement for APC Back-UPS Pro 1300/1500 - Walmart.com
Amazon.com: UPC UPGRADE PARTS COMPANY RBC7-UPC Replacement Battery for APC Smart-UPS SU1400, SUA1500, SUA750XL, SUA1000XL, SU1400NET, SU1000XLNET - Scroll Down for The Complete List of Compatible Models : Electronics
APC Smart-UPS 1500 Rack Mount (SUA1500R2X138) - Brand New Compatible Replacement Battery Kit | RefurbUPS