PBBAT_LFCCAPACITY
sc->sc_bat_sensor[PBBAT_LFCCAPACITY].units = capunit;
sc->sc_bat_sensor[PBBAT_LFCCAPACITY].state = ENVSYS_SINVALID;
INITDATA(PBBAT_LFCCAPACITY, ENVSYS_SWATTHOUR, "last full cap");
sc->sc_bat_sensor[PBBAT_LFCCAPACITY].flags = ENVSYS_FMONNOTSUPP;