It was a long wait for the box of parts to arrive to convert my Brompton. The instructions were good, but the pedal attachment was wrong. Customer service were prompt in sending a different part, and I still had to make my own modifications to make it fit the pedal arm. The battery fits on the back of the handlebar on the Brompton, and so my knees are always hitting the battery. Also, the battery bracket takes up the whole space on the handlebar, leaving no room for the controller, nor for my front lights. So I bought a handlebar extender that fits above the battery bracket for the controller and front lights. Having battled to make it all fit, and it works, it is a joy to ride, and I am using the bike more. Sometimes I feel a "fitness fraud" cycling along effortlessly alongside cyclists putting in effort going up hills. But it has all been worth it in the end.