Toshiba Portege M400 User Manual page 145

6. Slide the battery release latch to free the battery pack for removal, then
slide out the battery pack.
To install a battery pack, follow the steps below.
Do not touch the battery release latch while holding the computer. Or you
may get injured by the dropped battery pack by unintentional release of the
battery release latch.
7. Insert the battery pack.
8. Make sure that the battery pack is securely in place and the battery
safety lock is in the lock position (
9. Return your computer to the upright position.
User's Manual
Battery
release latch
Releasing the battery pack (2)
Battery lock
Securing the battery pack
Power and Power-Up Modes
).
Battery pack
Battery pack
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