Fujitsu LIFEBOOK U7311 Operating Manual page 38

Working with the notebook
Installing a battery
2
2
1
► Position the battery at the edge.
► Insert the battery into the battery compartment until it engages positively (1)
► Slide the locking device (2) in the direction of the arrow.
► Turn the notebook the right way up again and place it on a flat surface.
► Reconnect the previously disconnected cables.
34 Fujitsu