IBM Power Systems Series Manual page 27

Figure 9. Removing the cache battery pack in a rack-mounted model with the release lever
14. Replace the cache battery pack as follows:
Attention: Ensure that the cache battery pack is disconnected for at least 60 seconds before you
connect the new battery. This is the minimum amount of time needed for the card to recognize that
the battery has been replaced.
a. Slide the new replacement cache battery pack into the controller until it is fully seated.
b. Verify that the tab (A) returns to the latched position.
Removing and replacing the cache battery pack
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