614-40096-00 33Replacing the internal battery :The internal battery is heavy. Use caution when handling the heavy batteries.A Phillips head screwdriver is needed to perform this procedure1 - Pull off the front panel by pressing the tabs on bothsides.2 - Disconnect the battery pack by separating theconnectors (never pull on the wires).3 - Remove the metal protection cover in front of thebattery (three screws or two screws for 3U models).4 - Pull the plastic tab to remove the battery pack andreplace it.