Panasonic CF-27 series Reference Manual page 26

Battery Power
Cover
Latches
5
Put the cover back into place
Put the inside cover (This is shown by dotted line in the figure) back
into place and attach the cover holding both sides.
Slide the latches.
Inside Cover
CAUTION
Be sure the battery pack is properly connected to the connector.
Do not allow the battery connector to touch any portion of the
computer. The computer may not operate properly.
When attaching the cover;
Be careful not to get your fingers caught in the cover.
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