2018 Basecamp only used a few times. I added a second AGM battery but other than that, it is all original. It comes with 160 watts of solar (2 panels) with options to add more. Love it but on our trip to Glacier National we decided something a little bigger might work best for us. So, we're in the market for a 20X - even though Airstream is 12 months out in production for these popular models.