All of my information is from Airstream brochures. The brochure says the panel is an 80 watt panel, so I just divided 80 watts by 12v to get 6.67 amps. I don't currently know the brands of the panel or the controller. I am going to be in that compartment in a few weeks when I install a 200 amp latching disconnect relay between the battery and the inverter. (I am tired of going outside to use my Blue Sea disconnect.) When I am in there, I can get the controller information. I will have to grab a ladder and go up on the roof to find out what panel I have. It will be a few weeks before I am able to retrieve all of that information, so we can let this thread lie for a while. I will be studying in the meantime.