I too had a Dahon. Didn't care for it a bit and left a bad taste for folding bike - benefits didn't offset compromise for me. I am currently using a rusted old 1-speed bike which is better than walking and doesn't attract much attention. I like the upright riding style. But with any incline.....
Extremely difficult decision for me. We also have a camper van so bikes have similar usage as the boat. Something that is designed for poor roads but with decent fenders and an comfortable riding position.
I came across this consumer reports article on care for eBikes to extend life.
Thanks for the input thus far