Originally Posted by linberl

That's because you are thinking of hub motor or mid drive systems. Onemotor is a friction drive - with battery the whole thing only weighs 4.5 pounds so a 130 W/h 42v battery will give about 10 miles full speed, up to 25 miles range using pedal assist mode and low assist. Carry extra small batteries isn't a big deal at about 2 pounds each, so extending range is easy. But this is NOT a system for someone who wants to not pedal or who wants a "motorcycle" type experience. It's for light weight bikes to help conquer hills and headwinds. It creates a bike with assist, not an electric motorcycle/moped you can pedal. Depends on what you want and need. Imo, why buy a super lightweight bike at extra cost if you are going to weigh it down with a heavy motor system? And picking up a folding e-bike, even to put in the trunk, with total weight of 40-60 lbs is certainly not an option for everyone. Depends on what you're looking for. But - if you want to fly - you have to keep the batteries (at least in USA airlines) under 160 W/h (~3800 mah).