Casio DT-X10 Series User Manual page 17

To replace the battery pack
1. Make sure that the Handheld Terminal is turned off.
If power is on, press the power button to turn it off.
2. Turn over the Handheld Terminal.
3. Slide the two battery pack lock switches on both sides of the Handheld Terminal to
the "FREE" position, and then remove the battery pack cover.
4. Remove the battery pack as shown in the illustration.
5. Taking care to ensure it is oriented correctly, load a new battery pack into the
Handheld Terminal.
6. Replace the battery pack cover, and then slide the battery pack cover lock switches to
the "LOCK" position.
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