APC Back-UPS CS 500 BK500 Battery - Replacement UB1280 Universal Sealed Lead Acid Battery (12V, 8Ah, 8000mAh, F1 Terminal, AGM, SLA) - Includes Two F1 to F2 Terminal Adapters : Amazon.ca: Health
RBC48 | APC UPS Replacement Battery Cartridge, for use with Smart-UPS 500 VA, Smart-UPS 750 VA, RBC Series | RS