APC Dell Smart UPS 3000 Rack Mount 3U DL3000RM3U Compatible Replacement Battery Set by UPSBatteryCenter 100% Guaranteed Compatible Battery Set for the APC Dell Smart-UPS 3000VA Rack Mount 3U Compatible UPS model: DL3000RM3U (Find the model # on the bottom of your UPS) Arrives fully charged and ready to go - (1) Year Replacement Warranty! Easy Installation - Plug & Play - Hot Swappable - No downtime required Manufactured & sold exclusively by UPSBatteryCenter