How To Replace & Upgrade Your APC Smart UPS Battery
NeweggBusiness - APC UPS Battery Replacement for APC Smart-UPS Model SMT1500, SMT1500C, SMT1500US, SUA1500, SUA1500US and select others (RBC7)
How to Replace an APC Back-UPS Pro Battery
Amazon.com: UPSBatteryCenter Compatible Replacement Battery Cartridge for APC SUA1500RM2U Smart-UPS 1500 Rack Mount 2U : Electronics
Battery kit for APC Smart UPS 1500 replaces APCRBC133
APC Smart-UPS 1500 (SUA1500) - Brand New Compatible Replacement Battery Kit with Harness | RefurbUPS
APC Smart-UPS C 1500 (SMC1500) - Brand New Compatible Replacement Battery Kit | RefurbUPS
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
Amazon.com: APC UPS Battery Replacement, RBC24, for APC Smart-UPS Models SMT1500RM2US, SMT1500R2-NMC, SU1400RM2U, SU1400RMNET, SUA1500RM2U and select others Black : Electronics
Smart-UPS RT 1500/2000 UPS Users Manual - APC Media