Had some issues at the start. The battery had failed after the 9th day of ownership. Currie Technologies made things right. They had me test a few things on the bike and are sending a replacement. The bike will put a smile on your face when it helps you power up hills. The bike is heavy and doesn't have regenerative braking but for the price it can't be beat. Overall quality is outstanding, it is very well built and a good design for a hybrid bike.