pedelec diy kit (booster+controller without battery) change your bicycle into "ebike" easily

if you would like to add a little extra propulsion power to your bike and transform a standard bicycle into an e-bike, you might be interesting to this kit.however when you use this kit, please don't treat your bicycle as a 100% electric bicycle:) this is the upgrade version,which make big improvenment compare to w5 version,the motor change to sensored,and use sine waves controller(vesc) ,with two speed modes,with current limit 10s,8ah battery,the range is over 30km,we didn't turn off the kit