These panels are actually a bit of over-kill, if you camp where there is good Sun exposure. However, for a solar system to really be effective, I think that you must go with over-kill because you can't count on all sunny days and good exposure in all camp sites.
We ran our lights at will, I even left the porch light on all night. We ran the furnace all night (starting at Sunset) and did not conserve at all. Our batteries were at 12.8V by 9:AM and 14.7V by 1:PM, each day.
Sunday morning 8:AM, after 3 nights
Sunday noon, just before leaving.
I left my ammeter at home......
