I have been an bike rider for a long time but just this last month converted my Trek hybrid to a Ebike and I am so happy I did. I am 74 and have been riding about 15 miles a day when I ride but after converting my bike I can easily get 25 or better. I have a question for someone to help me find a 36 Volt 15 AH 500 watt battery so I can extend my range to around 35 to 40 miles. The kit I have is just a 36 volt 13 AH. I am not interested in high speed just more range. There are plenty of batteries that do not match the Dolphin bracket I have as I want to be able to use the same bracket to change out when needed.