pure DC! just like a battery, at night it is just battery power. The load feature is not meant for inverter use. It seems to me it is intended for dusk to dawn use or some sort of timed nightly event.
@an RV forum one guy argues to use the load feature and the associated display that shows the amps/ah usage, for small loads that is ok until ya plug in your RV and its converter/inverter/charger pumps too many amps through the load terminals to the battery!
Just hook your loads to the batt, the same batt terminals you use to charge em.