Great info!! I probably mentioned to you guys on the Nevada trip that i started with just a 60W panel at first. When i was at a music festival for 4 days, parked and 90 degree heat, the fridge was running almost constantly and the 60W panel would not cut it. it was close, but by the end of the trip my battery was almost dead. I added another 60W panel for a total of 120W and now, it's more than adequate.