I always wanted to get regen working on one of my Direct Drive hub ebikes. My trike has it only because it was turned on in a new controller that I installed. It slows the trike down nicely without any wear on the pads. Just for some useless information I used up 9.5 amp/hours of the battery the other day and the regen put back .03. So it really won't increase your range in a practical sense.