Apple PowerBook (2400c) - Manual (Page 75)

Removing or replacing the battery
To remove or replace the battery, follow these steps:
1 Save your work and then shut down the computer or put it to sleep, or plug in the
power adapter.
2 Close the display.
3 Slide the battery switch to the left.
4 Pull the battery out of its compartment.
5 If you are inserting another battery, slide it into the battery compartment.
You can replace the battery with another LiIon battery. Make sure you only
use a battery that is designed for your Macintosh PowerBook.
IMPORTANT If you take out the main battery while the computer is in sleep
and it is not connected to an external power adapter, you must insert another
battery within 4 minutes or you may lose any unsaved work.
6 If you just inserted a new battery, it’s a good idea to plug in the power adapter in case
the battery is not fully charged.
You can look at the battery monitor portion of the Control Strip to see the
level of charge.
1 Slide the battery
switch to the left.
2 Remove the battery.
75 Power Management