Solar charging

I think you got a good deal, and depending on your use, it may be all you ever need, and you can easily add another panel if you need it. A few years ago I had an 80w panel and used it to charge trolling motor batteries and the camper battery...now I don't have an air conditioner or a microwave or any of that junk..just lights and some heat in the mornings, but that 80w was plenty. Solar has dropped by about half in price since then, so I am upgrading to a bendable 200w system. Mono, so it does better in the shade and portable, less than 10 pounds for the whole system. $400. That 80w cost me almost $300 less than 10 years ago.