Absolutely new experience
I bought a KN20S kit for my Brompton. The quality is much better than I expected, the installation took about one hour, maybe a little more. l had some issues, but I received instructions almost immediately. Now I can ride much more easily, the motor is very quiet and powerful, the battery capacity is sufficient for everyday use. The support and the communication are perfect, not to mention the price. The kit arrived as promised, very well packed.