Bests & Worsts Reviews from Amazon

I got a Wal Mart bike to do my conversion. I wired 4 12 volt 10 amp hour SLA batteries in series using 12 gauge wire. I put in a 30 amp blade type fuse. I had to carefully file the rear drop outs from 10 mm for the axle to fit. I then installed a Grinn torque arm for extra sturdiness to keep the torque from spinning the axle out. I weigh 250 pounds with 25 pounds of SLA batteries. With no pedaling on flat road I got 25 mph with this kit. Have not tried range yet but will be doing that next. I got the SLA batteries for the cost just to make sure this would work and it seems to be working fine. I plan on getting a Lithium battery pack next. I worked a little each day on this over about a 2 week period to make sure I did it right the first time. For the first run of this everything is working as it should. This bike has V brakes and while it will stop you at 25 mph, you need to give yourself at least twice the stopping distance as opposed to having a bike with disc brakes. UPDATE: I had a wheel bearing go bad in the hub after I had it for 6 weeks on the bike. I emailed Aosom and they sent out a new hub motor/wheel and I had it in 2 days. They did not ask for the old one back either. This company has the best customer service I have ever seen. So, if you are having doubts, go ahead and get this kit and if you have any problems, Aosom takes care of it fast. FIVE STARS!!!