Amazon.com: New Battery Pack for APC Smart-UPS X 1500VA Rack/Tower LCD 120V SMX1500RMUS Compatible Replacement by UPSBatteryCenter : Health & Household
Amazon.com: APC UPS Battery Replacement, RBC24, for APC Smart-UPS Models SMT1500RM2US, SMT1500R2-NMC, SU1400RM2U, SU1400RMNET, SUA1500RM2U and select others Black : Electronics
Amazon.com: APC UPS Battery Replacement, APCRBC110, for APC UPS Models BE550G, BE550MC, BN600MC and select others : Electronics