HP Power Management System - Manual (Page 26)

Conserving battery power
● Select low power-use settings through Power Options in Windows Control Panel.
● Turn off wireless and local area network (LAN) connections and exit modem applications when you
are not using them.
● Disconnect external devices that are not plugged into an external power source, when you are not
using them.
● Stop, disable, or remove any external media cards that you are not using.
● Use the fn+f7 and fn+f8 hotkeys to adjust screen brightness as needed.
● If you leave your work, initiate Sleep or Hibernation, or shut down the computer.
20 Chapter 3 Using battery power