118 Mobile Computing
Changing the main battery
3Release the Fn key.
The hot key card disappears. You are now in the selected mode.
Changing the main battery
When your main battery has run out of power, you have two
options: plug in the AC adaptor or install a charged main battery.
Never short circuit the battery pack by either accidentally or
intentionally bringing the battery terminals in contact with another
conductive object. This could cause serious injury or fire, and could
also damage the battery pack and computer.
❖Never expose a battery pack to abnormal shock, vibration or
pressure. The battery pack's internal protective device could
fail, causing it to overheat or ignite, resulting in caustic liquid
leakage, or explosion or fire, possibly resulting in death or
serious injury.
TECHNICAL NOTE: To avoid losing any data, save your files and
then either completely shut down your computer or put it into
Hibernation mode before changing the main battery.

Removing the battery from the computer

To remove the battery:
1Save your work.
2Turn off the computer or place it in Hibernation mode
according to the instructions in “Using and configuring
Hibernation mode” on page 85.
3Unplug and remove any cables connected to the computer,
including the AC adaptor.
4Close the display panel and turn the computer upside down.