Sharp Actius PC-UM20 Operation Manual page 44

3. Slide the battery stopper to the unlocked position ( ).
4. Slide the battery release lever to right and hold it; then, pull out the battery
pack.
Battery Release Lever
5. Lift up the battery pack and remove it from the computer.
6. Slide the battery stopper of a new battery pack to the unlocked position ( ).
Battery Stopper
3
3-5