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.\" $OpenBSD: acpibat.4,v 1.1 2006/09/20 07:16:50 mk Exp $
.\"
.\" Copyright (c) 2006 Dmitri Alenitchev <dmitri@wave.net.ru>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd August 29, 2006
.Dt ACPIBAT 4
.Os
.Sh NAME
.Nm acpibat
.Nd ACPI Control Method Battery
.Sh SYNOPSIS
.Cd "acpibat* at acpi?"
.Sh DESCRIPTION
The
.Nm
driver supports the ACPI Control Method Battery interface between the
battery and the host.
Information about the battery such as capacity, recharge rate, voltage,
serial number is available through this driver.
Battery status is updated every 10 seconds and can be monitored using
.Xr sysctl 8
or
.Xr sensorsd 8 .
.Sh SEE ALSO
.Xr acpi 4 ,
.Xr intro 4 ,
.Xr sensorsd 8 ,
.Xr sysctl 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 3.8 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Marco Peereboom Aq marco@openbsd.org .
.Sh BUGS
Some systems do not propagate battery insertion up to the driver.
.Pp
Smart Battery Specification-based batteries are not supported.
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