UPS Battery Center BF500 APC Back-UPS Office 500VA BF500 Compatible Battery Replacement UPSBatteryCenter APC BackUPS Office 500VA Compatible Replacement Battery - 100% Guaranteed Compatible Battery compatible with: BF500 - Make sure this is the exact model # Arrives fully charged and ready to go - (1) Year Replacement Warranty! Easy Installation, Exact fit - Plug & Play Manufactured & sold exclusively by UPSBatteryCenter