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<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
<refentry id="systemd-battery-check.service" xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>systemd-battery-check</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>systemd-battery-check.service</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-battery-check.service</refname>
<refname>systemd-battery-check</refname>
<refpurpose>Check battery level whether there's enough charge, and power off if not.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>systemd-battery-check.service</filename></para>
<cmdsynopsis>
<command>/usr/lib/systemd/systemd-battery-check</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<filename>systemd-battery-check.service</filename> is used to check the battery level during the early
boot stage to determine whether there's sufficient battery power to carry on with the booting process.
</para>
<para>
<command>systemd-battery-check</command> returns success if the device is connected to an AC power
source or if the battery charge is greater than 5%. It returns failure otherwise.
</para>
</refsect1>
<refsect1>
<title>Options</title>
<para>The following options are understood by <command>systemd-battery-check</command>:</para>
<variablelist>
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
</variablelist>
</refsect1>
<refsect1>
<title>Exit status</title>
<para>
On success (running on AC power or battery capacity greater than 5%), 0 is returned, a non-zero failure
code otherwise.
</para>
</refsect1>
<refsect1>
<title>Kernel Command Line</title>
<para>The following variables are understood:</para>
<variablelist class='kernel-commandline-options'>
<varlistentry>
<term><varname>systemd.battery-check=<replaceable>BOOL</replaceable></varname></term>
<listitem>
<para>Takes a boolean. If specified with false, <command>systemd-battery-check</command> command
will return immediately with exit status 0 without checking battery capacity and AC power
existence, and the service <filename>systemd-battery-check.service</filename> will succeed. This
may be useful when the command wrongly detects and reports battery capacity percentage or AC power
existence, or when you want to boot the system forcibly.</para>
<xi:include href="version-info.xml" xpointer="v254"/>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
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