Originally Posted by
Calsun
With my e-bikes there are three settings that can be activated while riding. I can use a smartphone app to set each of these settings to provide from 10% to 100% power assist. The Class III bikes provide motor assistance at speeds up to 28 mph which provides the most natural feel when riding. It is like getting a 15 mph tailwind as compared to the Class II that have a lot more power and are much heavier and more like a motorbike or electric scooter. Both types are fine but decide what type of experience you want before shopping for a bike.
And don't forget, there are Class 1 e-bikes, too. They provide assist up to 20 mph, and typically they're significantly lighter than Class 3 bikes. Their experience is much more like an unassisted road bicycle than a motorbike or electric scooter.