Hi,
My wife and I have the Aventon Level - original version and now they have the V2 version out. I am 6'4 and 280lbs and the bike is capable of 300lbs. It is a rear drive comes with a rear rack, fenders, etc... although we did buy aftermarket seats and the battery is removable. We take these with us all the time when we go camping and have about 1500 miles on them without any problems. They come in multiple frame sizes (S,M,L) as well as either step through or step over.
Keep in mind whatever you buy they will be heavier than your normal bike and would need a bike rack to support the additional weight. For that I bought the KAC K2 rack, they are not rated for RV usage though. When we take them camping we just store them inside.
If you have any other questions just let me know. Hope it helps