Overall I enjoy my swytch conversion kit. Installation was pretty straightforward but did need some filing of the axle to fit correctly in my fork. I had to buy some specialized tools that I didn't already have. And I feel for somebody less mechanically inclined it might feel like a much more difficult install. For me it was fine. I have the basic kit and I believe their stated range is around 7 miles but I have never once approached that distance even with the setting on the lowest amount of assist to try to increase the batteries capacity. Perhaps according to mathematics it should be around 7 miles but in real world usage I would say I have never gotten more than around three and a half miles before it has to be charged. The other frustrating issue is that the computer part and the battery both have power indicators and yet they almost never agree with each other. The computer power level indicator shrinks very quickly and will cut out and stop sending power to the motor even though the battery indicator is still showing three of five lights meaning there should be at least 50% of battery left. What makes this even worse is that when power is not actively being sent to the motor there is considerable drag against your self-powered pedaling. Then if I stop at a stop sign or for a minute or two on the side of the road the power indicator on the computer goes back up and now I have power again. So there's something wrong in the programming that hopefully could be fixed for future models. It's really frustrating to see that your battery has more than 50% power and the brain of the whole thing decide that you have zero. If you live in a flat area with no inclines and no hills I think switch is a wonderful product. If you only need to go about 3 mi before you're back home and able to charge your battery I think switch is a wonderful product. If you need to go all day long, make multiple stops around your city before you're going to get home you better make sure you carry that charger with you and have somewhere to charge it because there is no way you're going to get a day of use out of your bike. I love the electric assist but every single day I think about switching it back to my standard bike. And even with these challenges I still give it 4 out of 5 stars it's a good product for a very specific rider.