I run two 245w panels with two Eco-worthy controllers and they do work well. Normally they are split up between the trailer and inverter banks but on a day we use the big inverter a lot I combine them for up to 34a. That not only keeps the microwave from draining the inverter bank so fast, it only take about 30 minutes to get it back up to float after we nuke some taters. I'm considering spending the extra $150 for another Eco-W and the wires to get a third panel going just to see if I can't run a 5000 btu window AC for a few hours a day.