It was easy to install and works well as a pedal assist. I have three complaints: - The battery charge lights are inconsistent and inaccurate. I frequently ride for miles with all five charge lights on, then have it suddenly drop to two in a matter of only about half a mile. It will frequently jump back up to three or four lights after that, then the battery will die with two lights still on. - Battery life is not as long as advertised. Mine only lasts around 7 miles (~10 km), and it was advertised to last 10 miles (~15 km). That's a significant difference. - Why can't I just buy an accessory after my initial order? I realized after installing that a bottle cage battery mount would work better for me than the handlebar mount, but there's no option to just buy a different mount afterwards without going through another full order. There's no reason it has to be that way.