IBM 1000 VA LCD Installation And Maintenance Manual page 23

4. Connect the internal battery connectors.
Note: A small amount of arcing might occur when you connect the batteries.
This is normal and does not damage the unit or present any safety concern.
5. Replace the metal battery cover:
a. Align the battery cover over the internal battery.
b. Firmly press the cover to the uninterruptible power supply and press the six
tabs on the sides of the cover into the slots in the uninterruptible power
supply.
c. Press down on the metal cover until it locks into place.
d. Tighten the thumbscrew.
Chapter 2. Installing the uninterruptible power supply
13