RBC7 Battery Replacement for APC Smart UPS 1500 (2Pack)
Amazon.com: APC Smart-UPS 1500 Rack Mount (SUA1500RM2U) Compatible Replacement Battery Pack by UPSBatteryCenter : Electronics
APC UPS battery replacement for Smart-UPS 1500 (SUA1500) and XL 3000 (SUA3000XLT): batteries RBC7 and RBC55 | The Wiert Corner - irregular stream of stuff