IBM Storwize V7000 Unified Series Problem Determination Manual page 110

To remove the battery, complete the following procedure.
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Storwize V7000 Unified: Problem Determination Guide Version
1. To help you work safely with Storwize V7000 Unified file modules, read the
safety information in "Safety" on page xi, "Safety statements" on page xiii,
and "Installation guidelines" on page 54.
2. Follow any special handling and installation instructions that come with the
battery.
3. Turn off the file module and peripheral devices, then label and disconnect
both power cords and all external cables.
4. Press down on the left and right side latches and pull the server out of the
rack enclosure until both slide rails lock.
5. Remove the cover, as described in "Removing the cover" on page 83.
6. Disconnect any internal cables, as necessary, making note of the cable routing
for later reinstallation.
7. Remove any adapters as necessary.
8. Locate the battery on the system board.
9. Remove the battery:
a. If there is a rubber cover on the battery holder, use your fingers to lift the
battery cover from the battery connector.
b. Use one finger to push the battery horizontally away from the PCI riser
card in slot 2 and out of its housing.