Review on Electric Conversion Bicycle Controller Display Sports & Fitness by Walter Velasquez

I've taken it about 6 times now and I'm happy with it: BAD NEWS1. There were no instructions in the kit and I had to watch a YouTube video which was vague in places but eventually figured it out both on my bike and at work.2. I took it today on my longest ride and with the battery (according to their digital controller) 30% battery remaining, the digital controller died. I disconnected the battery and turned the controller back on, rode about 1/2 mile and then turned off again. I have no idea why. GOOD NEWS1. I got it to 28 km/h. a bit fast for me but wow! 2. It is very quiet3. Without them, peddling doesn't bother (see #2 above)4. I'm mostly happy with it so far (except for #2 above, I need to figure out why it was closed)