Toshiba SATELLITE PRO S300M - Manual (Page 118)

118 Mobile Computing
Changing the main battery
5 Slide the primary battery release latch up, or away from the
center of the computer, while at the same time applying light
pressure to the battery to slightly pull it away from the
computer.
(Sample Illustration) Unlocking the primary battery release
6 While continuing to lightly pull on the battery, slide the
secondary battery release latch down, or away from the center
of the computer and then pull the battery out of the computer.
(Sample Illustration) Removing the battery
Primary battery
release latch
Secondary battery
release latch