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