NEC Univerge SV8100 System Hardware Manual page 144

Issue 4.1
3 - 76
3. Unplug all the cable connectors from the battery box.
Figure 3-100 Removing the CHSGW SMALL BATT BOX
4. Loosen the two thumb screws on the battery box and remove
the box by pulling on the two thumb screws.
5. Replace the fuse(s) as needed.
6. Replace the battery box and tighten the thumb screw on either
side of the box.
7. Replace the battery connection cables to the battery box.
UNIVERGE SV8100
Installing the SV8100 Chassis