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+.Dd September 7, 2018
+.Dt FBATT 1
+.Os
+.
+.Sh NAME
+.Nm fbatt
+.Nd framebuffer battery indicator
+.
+.Sh SYNOPSIS
+.Nm
+.
+.Sh DESCRIPTION
+.Nm
+displays a battery charge indicator
+in the top-right corner
+of the Linux framebuffer.
+.
+.Sh ENVIRONMENT
+.Bl -tag
+.It Ev FRAMEBUFFER
+The framebuffer device path.
+.El
+.
+.Sh FILES
+.Bl -tag
+.It Pa /dev/fb0
+The default framebuffer device path.
+.It Pa /sys/class/power_supply
+The first subdirectory containing
+.Pa charge_full
+and
+.Pa charge_now
+is used to read the battery charge.
+.El