ACPIBAT_PRESENT
sc->sc_sensor[ACPIBAT_PRESENT].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_PRESENT].value_cur = 0;
sc->sc_sensor[ACPIBAT_PRESENT].value_cur = 1;
INITDATA(ACPIBAT_PRESENT, ENVSYS_INDICATOR, "present");