Epson ActionNote 4SLC/33 User Manual page 53

4. Press down on the release buttons on the battery
compartment cover and slide the cover toward you.
5. Pull up on the cloth tab and lift out the low battery.
6. Slide the fully-charged battery pack into the slot. Insert the
right side (with contacts) first, then press on the left side to
secure the battery.
Powering the Cornputer 3-3