Fujitsu LIFEBOOK T904 Operating Manual page 52

Working with the notebook
3
1
2
4
► Slide the Battery Lock slider switch in the direction of the arrow (1) and hold it in place.
► Slide the Battery Lock slider switch in direction of the arrow (2).
► Remove the battery compartment cover (3).
► Remove the battery from the battery compartment (4).
50 Fujitsu