You can do around 100 miles a day on 70% and that’s more than enough for me the way I’m traveling. I have the extended capacity model. It also really depends on the route, with a lot of downhills you can probably get closer to 180 miles on 70%. On a cool night when you can just leave a window open on the trailer (so you don’t need to power it), you can get a full charge and that will get you around 200 miles a day while towing on something that has a decent amount of downhill.