'asapm' is an X11 client which displays a battery status of your notebook computer equiped with APM (Advanced Power Management) BIOS. The status displayed consists remaining battery life, an AC line status, a charging status and a digital readout with (a) Percent battery remaining and (b) estimated time to dead. NOTE: You need APM driver in your kernel. And enable it to edit file /etc/rc.conf at `apm_enable=NO' to `YES'.