... 2.Remote control with 2 speeds 3.Max. Speed:20km/h 4.Motor:900Wx2 PCS 5.Battery life:5-8 years Chinese ... casePower:Working voltage(VDC)68~90VDCRated Power(W)900wx2,DC brushless motorFull charge time(h)2~5, depending on ambient temperature ... temperature, load, Etc.Safety: Active protection Rider-on detection,Intelligent speed limit,low power, over temperaturerange, over voltage, over load, dangerous ...