FUJITSU answers^2 D1740 - Manual (Page 31)

Adding PCI cards
The lithium battery holder exists in different designs that function in the same way.
2 3
3
1
2
3
► Press the locking lug in the direction of the arrow; the battery jumps somewhat out of the
holder (1).
► Remove the battery (2).
► Insert a new lithium battery of the same type into the socket (3).
A26361-D1740-Z120-1-6319, Edition: 3 English - 21