Fujitsu LIFEBOOK T904 Operating Manual page 51

Working with the notebook
Inserting battery
1
2
3
► Place the battery in the battery compartment (1).
► Close the battery compartment cover (2).
► Slide the release button in the direction of the arrow (3).
The battery is secured.
► Turn the notebook the right way up again and place it on a flat surface.
► Reconnect the cables that you disconnected before.
Fujitsu 47