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<page xmlns="http://projectmallard.org/1.0/" type="topic" style="tip" id="power-batterylife" xml:lang="lt">
<info>
<link type="guide" xref="power"/>
<link type="seealso" xref="power-suspend"/>
<revision pkgversion="3.4.0" date="2012-02-20" status="review"/>
<revision version="12.04" date="2012-03-22" status="final"/>
<desc>Tips to reduce your computer's power consumption.</desc>
<credit type="author">
<name>GNOME Documentation Project</name>
<email>gnome-doc-list@gnome.org</email>
</credit>
<credit type="author">
<name>Phil Bull</name>
<email>philbull@gmail.com</email>
</credit>
<credit type="editor">
<name>Ekaterina Gerasimova</name>
<email>kittykat3756@gmail.com</email>
</credit>
<include xmlns="http://www.w3.org/2001/XInclude" href="legal.xml"/>
</info>
<title>Use less power and improve battery life</title>
<p>Computers can use a lot of power. By using some simple energy-saving
strategies, you can reduce your energy bill and help the environment. If you have a laptop, this will also help to increase the amount of time it can run on battery power.</p>
<section id="general">
<title>General tips</title>
<list>
<item>
<p><link xref="shell-exit#suspend">Suspend your computer</link> when you
are not using it. This significantly reduces the amount of power it uses,
and it can be woken up very quickly.</p>
</item>
<item>
<p>Turn off the computer when you will not be
using it for longer periods. Some people worry that turning off a computer
regularly may cause it to wear out faster, but this isn't the case.</p>
</item>
<item>
<p>Use the <gui>Power</gui> preferences in <app>System Settings</app> to
change your power settings. There are a number of options that will help to
save power: you can <link xref="display-dimscreen">automatically dim</link>
the display after a certain time; <link xref="display-dimscreen">reduce the
display brightness</link> (for laptops); and have the computer <link xref="power-suspend">automatically suspend</link> if you have not used it
for a certain period of time.</p>
</item>
<item>
<p>Turn off any external devices (like printers and scanners) when you're
not using them.</p>
</item>
</list>
</section>
<section id="laptop">
<title>Laptops, netbooks, and other devices with batteries</title>
<list>
<item>
<p><link xref="display-dimscreen">Reduce the screen brightness</link>;
powering the screen accounts for a significant fraction of a laptop's power
consumption.</p>
<p>Most laptops have buttons on the keyboard (or a keyboard shortcut) that
you can use to reduce the brightness.</p>
</item>
<item>
<p>If you don't need an Internet connection for a little while, turn off
the wireless/Bluetooth card. These devices work by broadcasting radio
waves, which takes quite a bit of power.</p>
<p>Some computers have a physical switch that can be used to turn it off,
whereas others have a keyboard shortcut that you can use instead. You can
turn it on again when you need it.</p>
</item>
</list>
</section>
<section id="advanced">
<title>More advanced tips</title>
<list>
<item>
<p>Reduce the number of tasks that are running in the background.
Computers use more power when they have more work to do.</p>
<p>Most of your running applications do very little when you are not
actively using them. However, applications that frequently grab data from
the internet, play music or movies can impact your power consumption.</p>
</item>
</list>
</section>
</page>
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