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<name>Phil Bull</name>
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<email>philbull@gmail.com</email>
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<credit type="author">
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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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<title>It says X minutes of battery remaining, but that's not true</title>
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<p>When you check the remaining battery life, you may find that the <em>time remaining</em> it reports is different to how long the battery <em>actually</em> lasts. This is because the amount of remaining battery life can only be estimated. The estimates should get better over time, though.</p>
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<p>In order to estimate the remaining battery life, a number of factors must be taken into account. One is the amount of power currently being used by the computer: power consumption varies depending on how many programs you have open, which devices are plugged in, and whether you are running any intensive tasks (like watching a DVD or converting music files, for example). This changes from moment to moment, and is difficult to predict.</p>
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<p>Another factor is how the battery discharges. Some batteries lose charge faster the emptier they get. Without precise knowledge of how the battery discharges, only a rough estimate of remaining battery life can be made.</p>
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<p>As the battery discharges, the Power Manager will figure-out its discharge properties and will learn how to make better estimates of battery life. They will never be completely accurate, though.</p>
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<title>The estimated battery life is wrong</title>
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<p>When you check the remaining battery life, you may find that the time
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remaining that it reports is different to how long the battery actually lasts.
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This is because the amount of remaining battery life can only be estimated.
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Normally, the estimates improve over time.</p>
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<p>In order to estimate the remaining battery life, a number of factors must be
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taken into account. One is the amount of power currently being used by the
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computer: power consumption varies depending on how many programs you have
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open, which devices are plugged in, and whether you are running any intensive
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tasks (like watching a DVD or converting music files, for example). This
39
changes from moment to moment, and is difficult to predict.</p>
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<p>Another factor is how the battery discharges. Some batteries lose charge
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faster the emptier they get. Without precise knowledge of how the battery
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discharges, only a rough estimate of remaining battery life can be made.</p>
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<p>As the battery discharges, the power manager will figure-out its discharge
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properties and will learn how to make better estimates of battery life. They
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will never be completely accurate, though.</p>
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<p>If you get a completely ridiculous battery life estimate (say, hundreds of days!), the Power Manager is probably missing some of the data it needs to make a sensible estimate.</p>
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<p>If you unplug the power and run the laptop on battery for a while, then plug it in and let it recharge again, the Power Manager should be able to get the data it needs.</p>
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<p>If you get a completely ridiculous battery life estimate (say, hundreds of
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days), the power manager is probably missing some of the data it needs to
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make a sensible estimate.</p>
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<p>If you unplug the power and run the laptop on battery for a while, then
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plug it in and let it recharge again, the power manager should be able to get
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the data it needs.</p>
added
removed
gnome-help/nl/power-batteryestimate.page
