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<?xml version="1.0" encoding="utf-8"?>
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<page xmlns="http://projectmallard.org/1.0/" type="topic" style="tip" id="power-batterylife" xml:lang="cs">
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<link type="guide" xref="power"/>
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<link type="seealso" xref="power-suspend"/>
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<link type="seealso" xref="power-hibernate"/>
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<link type="seealso" xref="power-off"/>
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<revision pkgversion="3.4.0" date="2012-02-20" status="review"/>
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<desc>Tips to reduce the power consumption of your computer.</desc>
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<credit type="author">
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<name>GNOME Documentation Project</name>
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<email>gnome-doc-list@gnome.org</email>
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<credit type="author">
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<name>Phil Bull</name>
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<email>philbull@gmail.com</email>
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<credit type="editor">
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<name>Ekaterina Gerasimova</name>
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<email>kittykat3756@gmail.com</email>
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<include xmlns="http://www.w3.org/2001/XInclude" href="legal.xml"/>
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<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
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<mal:name>Adam Matoušek</mal:name>
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<mal:email>adamatousek@gmail.com</mal:email>
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<mal:years>2012</mal:years>
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<title>Use less power and improve battery life</title>
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<p>Computers can use a lot of power. By using some simple energy-saving
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strategies, you can reduce your energy bill and help the environment.</p>
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<section id="general">
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<title>General tips</title>
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<p><link xref="shell-exit#suspend">Suspend your computer</link> when you
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are not using it. This significantly reduces the amount of power it uses,
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and it can be woken up very quickly.</p>
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<p><link xref="power-off">Turn off</link> the computer when you will not be
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using it for longer periods. Some people worry that turning off a computer
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regularly may cause it to wear out faster, but this is not the case.</p>
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<p>Use the <gui>Power</gui> preferences in <app>System Settings</app> to
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change your power settings. There are a number of options that will help to
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save power: you can <link xref="display-dimscreen">automatically dim</link>
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the display after a certain time; <link xref="display-dimscreen">reduce the
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display brightness</link> (for laptops); and have the computer <link xref="power-suspend">automatically suspend</link> if you have not used it
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for a certain period of time.</p>
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<p>Turn off any external devices (like printers and scanners) when you are
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<title>Laptops, netbooks, and other devices with batteries</title>
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<p><link xref="display-dimscreen">Reduce the screen brightness</link>;
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powering the screen accounts for a significant fraction of a laptop power
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<p>Most laptops have buttons on the keyboard (or a keyboard shortcut) that
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you can use to reduce the brightness.</p>
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<p>If you do not need an Internet connection for a little while, turn off
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the wireless/Bluetooth card. These devices work by broadcasting radio
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waves, which takes quite a bit of power.</p>
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<p>Some computers have a physical switch that can be used to turn it off,
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whereas others have a keyboard shortcut that you can use instead. You can
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turn it on again when you need it.</p>
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<section id="advanced">
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<title>More advanced tips</title>
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<p>Reduce the number of tasks that are running in the background.
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Computers use more power when they have more work to do.</p>
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<p>Most of your running applications do very little when you are not
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actively using them. However, applications that frequently grab data from
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the internet, play music or movies can impact your power consumption.</p>
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