This is a single speed 20″ Gomier tricycle that was made electric with the Solar Bike kit. It has a 200W motor and a 36V 11.6Ah Panasonic lithium ion battery. We put the battery in the basket for easy removal if you need to take it inside to charge but it could go underneath the tricycle.  It’s really neat and manoeuvrable for a tricycle.  It will have a range of about 15-30km depending on how much you pedal.  It has great torque up hills. Suitable for people up to around 180cm or 100kg. The single speed is just right for an eTrike, you don’t seem to need gears.