Canon POWERSHOT A2400IS User Manual page 18

Initial Preparations
Terminals Battery Lock
Removing the Battery
; insert the battery.
While pressing the battery lock in the direction
of the arrow, insert the battery facing as shown
and push it in until it clicks into the locked
position.
If you insert the battery facing the wrong way,
it cannot be locked into the correct position.
Always confirm that the battery is facing the
right way and locks when inserted.
Close the cover.
Lower the cover ((_) and hold it down as you
slide it until it clicks into the closed position
(@),
Open the cover and press the battery lock in
the direction of the arrow.
The battery will pop up.
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