I have an 80 watt Ramsond. It is a "tether to graze" with a Morningstar Sunkeeper 6 amp charge controller, 20' of 12awg SJ cable, an old tubing lawnmower handle added to produce an adjustable A-frame leg and a yard
lighting stake and two wire tent stakes for wind control. Even with an unobstructed sky, drop in watts produced is noticable if not rotated to face the moving sun. Has to be repositioned at the very least twice a day. I believe it is the older amorphous technology. With 1500watt Ramsond inverter and a group 27
battery, it is keeping up reasonably well with discharge to a 2.7 ft.\3 dorm
fridge (105watts) on a bright sunny day. I am debating getting an additional group 27 or, perhaps when this
battery goes south, 2 6V mobility scooter batteries of the AGM sort to go inside the trailer.
jack