This is 20″ single speed electric tricycle. It uses a 200W mini-motor and 9Ah tube battery. The battery was put in the rear basket but it can also be put underneath. It’s better inside the basket if you want to remove it easily. All up, this is a fantastic little trike, you really only need a single speed on these because they do not go so fast and the motor gives great assistance in the small 20″ wheel. The arm was broken in a separate incident!