man > systemd-battery-check(8)

SYSTEMD-BATTERY-CHECK.SERVICE(8)        systemd-battery-check       SYSTEMD-BATTERY-CHECK.SERVICE(8)

NAME
       systemd-battery-check.service, systemd-battery-check - Check battery level whether there's
       enough charge, and power off if not

SYNOPSIS
       systemd-battery-check.service

       /usr/lib/systemd/systemd-battery-check [OPTIONS...]

DESCRIPTION
       This service checks the presence of an external power supply and the battery level during the
       early boot stage to determine whether there is sufficient power to carry on with the booting
       process.

       systemd-battery-check 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.

OPTIONS
       The following options are understood by systemd-battery-check:

       -h, --help
           Print a short help text and exit.

       --version
           Print a short version string and exit.

EXIT STATUS
       On success (running on AC power or battery capacity greater than 5%), 0 is returned, a
       non-zero failure code otherwise.

KERNEL COMMAND LINE
       The following variables are understood:

       systemd.battery-check=BOOL
           Takes a boolean. If specified with false, systemd-battery-check command will return
           immediately with exit status 0 without checking battery capacity and AC power existence,
           and the service systemd-battery-check.service 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.

           Added in version 254.

SEE ALSO
       systemd(1)

systemd 255                                                         SYSTEMD-BATTERY-CHECK.SERVICE(8)