122 Mobile Computing
Changing the main battery
5.375 x 8.375 ver 2.4.0
To set an alarm:
1Click Start, then click Control Panel.
The Control Panel window appears.
2Click Performance and Maintenance.
3Click the Tos hib a Po wer Sav er icon.
4Choose the Power Save Modes tab, then under the
Running on Batteries section, click Details.
5Click the Alarm tab and set the alarm, as desired.
Changing the main battery
When your battery power is running low, you have two
options: connect the computer to an AC power source or
install a charged battery.
NOTE: If your battery discharges fully, your information will be
lost. Be sure to save your work often.
CAUTION: When handling a battery, be careful not to drop it or
short-circuit its terminals.

Removing the battery from the computer

1Save your work.
2Turn off the computer or place it in Hibernation mode
according to the instructions in “Going into Hibernation
mode more quickly” on page 110.
3Remove all cables connected to the computer.
4Close the display panel and turn the computer upside
down with the front of the computer facing you.