|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
type="topic" style="ui"
|
|
Packit |
6d2957 |
id="power-batteryestimate">
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
<info>
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
<link type="guide" xref="power#faq"/>
|
|
Packit |
6d2957 |
<revision pkgversion="3.4.0" date="2012-02-20" status="review"/>
|
|
Packit |
6d2957 |
<revision pkgversion="3.18" date="2015-09-28" status="final"/>
|
|
Packit |
6d2957 |
<revision pkgversion="3.20" date="2016-06-15" status="final"/>
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
<desc>The battery life displayed when you click on the <gui>battery icon</gui> is an estimate.</desc>
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
<credit type="author">
|
|
Packit |
6d2957 |
<name>GNOME Documentation Project</name>
|
|
Packit |
6d2957 |
<email>gnome-doc-list@gnome.org</email>
|
|
Packit |
6d2957 |
</credit>
|
|
Packit |
6d2957 |
<credit type="author">
|
|
Packit |
6d2957 |
<name>Phil Bull</name>
|
|
Packit |
6d2957 |
<email>philbull@gmail.com</email>
|
|
Packit |
6d2957 |
</credit>
|
|
Packit |
6d2957 |
<credit type="author">
|
|
Packit |
6d2957 |
<name>Ekaterina Gerasimova</name>
|
|
Packit |
6d2957 |
<email>kittykat3756@gmail.com</email>
|
|
Packit |
6d2957 |
</credit>
|
|
Packit |
6d2957 |
<credit type="editor">
|
|
Packit |
6d2957 |
<name>Michael Hill</name>
|
|
Packit |
6d2957 |
<email>mdhillca@gmail.com</email>
|
|
Packit |
6d2957 |
</credit>
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
<include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
|
|
Packit |
6d2957 |
</info>
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
<title>The estimated battery life is wrong</title>
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
When you check the remaining battery life, you may find that the time
|
|
Packit |
6d2957 |
remaining that it reports is different to how long the battery actually lasts.
|
|
Packit |
6d2957 |
This is because the amount of remaining battery life can only be estimated.
|
|
Packit |
6d2957 |
Normally, the estimates improve over time.
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
In order to estimate the remaining battery life, a number of factors must be
|
|
Packit |
6d2957 |
taken into account. One is the amount of power currently being used by the
|
|
Packit |
6d2957 |
computer: power consumption varies depending on how many programs you have
|
|
Packit |
6d2957 |
open, which devices are plugged in, and whether you are running any intensive
|
|
Packit |
6d2957 |
tasks (like watching high-definition video or converting music files, for
|
|
Packit |
6d2957 |
example). This changes from moment to moment, and is difficult to predict.
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
Another factor is how the battery discharges. Some batteries lose charge
|
|
Packit |
6d2957 |
faster the emptier they get. Without precise knowledge of how the battery
|
|
Packit |
6d2957 |
discharges, only a rough estimate of remaining battery life can be made.
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
As the battery discharges, the power manager will figure out its discharge
|
|
Packit |
6d2957 |
properties and will learn how to make better estimates of battery life. They
|
|
Packit |
6d2957 |
will never be completely accurate, though.
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
<note>
|
|
Packit |
6d2957 |
If you get a completely ridiculous battery life estimate (say, hundreds of
|
|
Packit |
6d2957 |
days), the power manager is probably missing some of the data it needs to
|
|
Packit |
6d2957 |
make a sensible estimate.
|
|
Packit |
6d2957 |
If you unplug the power and run the laptop on battery for a while, then
|
|
Packit |
6d2957 |
plug it in and let it recharge again, the power manager should be able to get
|
|
Packit |
6d2957 |
the data it needs.
|
|
Packit |
6d2957 |
</note>
|
|
Packit |
6d2957 |
|
|
Packit |
6d2957 |
</page>
|