RBC2 APC UPS Replacement Battery for the BACK UPS CS5000 CS500 and BK500EI | MDS Battery
RBC2 APC | APC Replacement Battery Cartridge For Use With Smart-UPS, UPS | 779-4058 | RS Components
American Power Conversion (APC) - RBC2 - Battery, Lead-Acid, 1.90 in. (Max.) H x 4.00 in. (Max.) W x 5.50 in. (Max.) D - Allied Electronics & Automation