IBM ThinkPad T40 Hardware Maintenance Manual page 71

Holding the battery release lever in the unlocked position
2 , remove the battery pack 3 .
3
When installing: Install the battery pack along the slide
b
rails on the left and right sides of the
battery-pack slot. Make sure that both
battery latches, a and b , are in the
locked position, as in the following
figure.
Removing and replacing a FRU
2
a
ThinkPad T40 Series
67