Panasonic CF-Y2 Series Reference Manual page 38

Battery Power
3
Insert the battery pack.
A Slide the left-side latch (locked manually: A) to the unlock position ( ).
B
Making sure the battery pack is facing the correct direction, slide it in the
direction of the arrow.
C
Slide the left-side latch (A) to the lock position ( ), and then check to ensure
that the battery pack is held firmly.
(Right-side latch is locked automatically.)
CAUTION
Confirm that the latch is properly locked. If it is not, the battery pack may come off
while you are carrying the computer
Do not remove the battery pack by force when the latch is locked. Doing so could
damage the battery pack
When the battery pack has been removed, do not apply pressure from the top of the
closed display. This may result in damage to the LCD
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