Swytch provides an exceptional solution if you a) already have a good quality bike you love, and b) you don’t want to spend thousands on a new electric bike. It is easy to install and works as promised. The new generation batteries are small enough to carry easily (we chose 2 of the smallest size in order to switch out for longer distances without needing to recharge). The only issue was axle size for the front wheel - the Swytch wheel was 10mm and our bike is 9mm. A quick bit of filing and problem solved (I believe Swytch now produces 9mm axles). All in all, Swytch is an excellent solution. Highly recommended.