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
Stop, disable, or remove any external media cards that you are not using.
If you leave your work, initiate Sleep or Hibernation, or shut down the computer.
Chapter 2 Using battery power
hotkeys to adjust screen brightness as needed.