Toshiba NB250 - Manual (Page 105)

105 Mobile Computing
Changing the main battery
5 Slide the battery release lock to the unlocked position.
(Sample Illustration) Unlocking the battery release lock
6 Slide the battery release latch to release the battery.
7 Pull the discharged battery out of the computer.
(Sample Illustration) Removing the battery
If the battery is leaking or its case is cracked, put on protective
gloves to handle it, and discard it immediately. Always dispose of
used battery packs in compliance with all applicable laws and
regulations. Put insulating tape, such as cellophane tape, on the
electrode during transportation to avoid a possible short circuit, fire
or electric shock. Failure to do so could possibly result in serious
injury.