[sbw1]

We run our genny while cruising on Lake Michigan in the springtime when the water is cold and we need cockpit heat and reverse cycle heat in the cabin. Our heat runs on alternating current. Our ice maker also runs on alternating current. In the summer we sometimes run the A/C while cruising which requires the genny.  We do not turn off dc powered systems as there is no need to do so. Our stereo is dc and so is the TV. Sometimes one or the other is on when we cruise. No need to worry about overcharging the batteries. The engine alternators and the Charles battery charger work together as needed to maintain the proper battery charge without overdoing things.