| SYSTEMD-BATTERY-CHECK.SERVICE(8) | systemd-battery-check | SYSTEMD-BATTERY-CHECK.SERVICE(8) |
.SH "NAME" systemd-battery-check.service, systemd-battery-check -
Check battery level whether there's enough charge, and power off if not
.SH "SYNOPSIS"
.PP systemd-battery-check.service
.HP 936u
/usr/lib/systemd/systemd-battery-check
[OPTIONS...]
.SH "DESCRIPTION"
.PP 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.
.PP 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.
.SH "OPTIONS"
.PP The following options are understood by systemd-battery-check:
.PP -h, --help
Print a short help text and exit.
.RE
.PP --version
Print a short version string and exit.
.RE
.SH "EXIT STATUS"
.PP On success (running on AC power or battery capacity greater than 5%), 0
is returned, a non-zero failure code otherwise.
.SH "KERNEL COMMAND LINE"
.PP The following variables are understood:
.PP 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.
.RE
.SH "SEE ALSO"
.PP systemd(1)
| systemd 262.2 |