3–30 Hardware and Software Guide
Power
Conserving Battery Pack Power
To extend the time that a battery pack can run the computer from
a single charge, use the following battery conservation settings
and procedures.

Conserving Power as You Work

To conserve power as you work:
■Prevent devices you are not using from drawing power from
the computer. For example:
❏Turn off wireless and local area network (LAN)
connections and close modem applications.
❏Disconnect from the computer any external devices that
are not plugged into an external power source.
❏Stop or remove any optional external media cards you are
not using.
❏Remove an optical disc that you are not using.
❏Disable or remove an inserted digital card.
❏Turn off a device connected to the S-Video–out jack.
■Use optional, externally powered speakers instead of the
internal speakers whenever possible. When you use the
internal speakers, minimize system volume. Volume can be
adjusted with the volume buttons.
■Minimize screen brightness.
❏To decrease screen brightness, press the fn+f7 hotkey.
❏To increase screen brightness, press the fn+f8 hotkey.
■If you leave your work, initiate standby or hibernation, or
shut down the computer.