1.lithium battery 2.mini high speed brushless 3.certificated by CPSC and EN15194 Specification:Motor: mini high speed brushless,Geared hub motor,180W-250W for European,250W-350Wfor North American,200W for AustraliaBattery: 36V/9Ah Lithium batteryPAS: 1:1 intelligent pedal assistant systemController: CYCLEMAN intelligent brushlessCharger: AC 100V-240V,2amps smart chargerCharging time: 6-8 hoursMax ...