Toshiba P100/P105 - Manual (Page 121)

121 Mobile Computing
Changing the main battery
5.375 x 8.375 ver 2.3.2
2 Insert the charged battery into the slot until the latch
clicks.
The battery pack has been designed so that you cannot install
it with reverse polarity.
If the battery does not slide into the slot easily, move the
battery release lock to the unlocked position and try again. Do
not force the battery into position.
Sample inserting the battery
3 Slide the battery release lock to the locked position.
4 Turn the computer right side up.
5 Reconnect any cables that were removed in step 3 of
“Removing the battery from the computer” on page 119 .
6 Restart the computer.