d8veh i would love to see what you think would best suit the original poster,you seem to have been dragged away from the original post,leave the fighting to the people trying to sell their wares.
At only 75kg, Poptop has a very wide choice. That's the problem.
I weighed 100kg when I started ebiking, and we have a lot of steep hills around here. I started with a regular Bafang front hub-motor 36v battery and 15A controller. It changed my life and probably saved it too. All ebikes work, and it's not expensive or difficult to change bits to make them suit you better (bars, seat, gears, etc. I was happy with that original bike and bits of it (motor, controller, throttle, PAS) are still going after 6 years, though it did need a few minor fixes.
Here's the features I like to see in an ebike for normal riding on the road, like touring, shopping, visiting, etc:
1. Sinewave controller for smoothness and quietness
2. At least three levels of assist
3. Gearing suitable for pedalling to at least 20 mph. That means free-hub gears or a chainwheel at least 44 teeth (at least 50T with 20" wheels).
4. Disc brakes, preferably hydraulic. I would immediately upgrade cable disk brakes if I had no choice (£50).
5. Up-to-date cells. A 36v 12Ah battery should now weigh less than 3kg.
Now we get to the choice of crank vs hub-motor. For very long hills, say greater than a mile, a crank motor is probably better (OEM legal 250w 26" wheel bike). For everything else including bikes with smaller wheels, rear hub-motor, provided that the motor has a sensible winding speed. The problem is that different hub-motors have different winding speeds and the OEMs probably haven't a clue what theirs is, even though it's a significant characteristic.
Now we come to decision time. To answer the question in OP: Yes, a Bafang BBS01 will be suitable. They're easy to fit and you can choose whatever battery you want. Make sure you get a gear-change sensor. They're quite expensive, but they're worth it. Problem solved!
Originally, he wanted a folding bike. That's a bit more tricky because there's so many similar. I think that gearing is probably the most important if you want to ride any distance. After that, battery weight vs capacity. I don't like to recommend particular bikes except when people have special requirements that make a bike particularly suitable. I always go for the cheapest that meets my requirements, but I can fix and change things if I find something that bothers me.
Which bike should I get? That's the same as saying, "which car should I buy?" There's no answer. The more research you do, the harder is the choice. You just have to dive in, then learn from your experience.
