Battery for APC Back-UPS ES 500 BE500R Compatible Replacement by UPSBatteryCenter In-Stock and Ready for Immediate Shipment - 1 Year Warranty included! Compatible with: BE500R (Check the model # on the back of the UPS) New compatible replacement battery for APC BackUPS ES 500 Arrived assembled and ready for use Manufactured & sold exclusively by UPSBatteryCenter