I have owned several electric bikes and this one is the best one. I am 63 with serious heart and circulation problems and this bike gets me out and about. I tend to ride it slower so I dont use up the battery as fast. I am getting over 22 miles per charge. It will go about 15+ MPH if I want to. I had a problem with the battery charger about 3 days after I bought it. I called the Company and the Owner answered the phone after business hours and FEDX'd me a brand new charger, at no charge to me, the next day along with a T-shirt for my troubles. When this battery gets older, I intend to buy the better battery and piggy back it on top of the other battery for a back up situation. Feel free to email me with any questions about this bike. It is great. I am surprised I don't see more of them around. I believe it is the best electric bike on the market.