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Removing and Replacing Components
3. Remove the upper battery unit (1).
a. Loosen the thumbscrews (2).
b. Disconnect the battery cable (3).
c. Slide the upper battery unit toward the rear of the controller module and lift it out.
4. If the battery pack in the upper battery unit must be replaced, remove it as follows:
a. Unwind the battery cable completely from around the battery pack.
b. Push the two plastic retainer tabs up and through the slots in the battery case (1).
c. Tilt the battery pack slightly away from the battery case (2).
d. Press down on the battery pack to expel it from the battery case (3).
HP StorageWorks Modular Smart Array 20 Maintenance and Service Guide 3-5