HP Integrity rx4640 Server - Manual (Page 24)

24 HP Smart Array P600 Controller for Integrity Servers User Guide
3.
If the main cache battery must be replaced:
a.
Press the battery retainer tabs down, and push them through to the other
side of the cache board (1).
b.
Lift the battery pack off the cache board (2).
4.
Remove the secondary cache battery pack:
a.
Unhook the wire retainer that holds the battery pack to the controller
board (1).
b.
While holding the battery in one hand, pull the plastic retainer tabs up
and push them through to the other side of the controller board (2).