Casio DT-X400 Series User Manual page 20

Installation
1. Turn the terminal over, turn the left and right battery pack cover lock switches to the
"FREE" position (
2. Install the battery pack in the direction indicated by the arrow.
3. Replace the battery pack cover (
lock switches to the "LOCK" position (
Precautions for Use
• Do not use any battery packs other than the specifi ed one.
• The battery pack has a limited service life. Depending on the way the battery pack is
charged, its degradation may accelerate or its capacity be reduced so that it cannot
be used for as long. If charging the battery pack does not restore its full functionality,
this indicates that it has reached the end of its life and should be replaced with a new
battery pack of the specifi ed type.
E-18
) and remove the battery pack cover (
) and return the left and right battery pack cover
).
), as shown in the illustration.