BenQ Joybook R48 Series User Manual page 58

3. Slide "Battery retainer A" to the right (1) and, while still
holding the retainer, remove the battery from its
compartment (2).
Battery
retainer A
54 Upgrading or replacing the memory
4. The memory cover is secured with several screws (indicated
by the arrows shown below). Use a screwdriver to remove
them.
To remove the screws, a small Phillips head screwdriver is
required.