... Model:BL-108 Motor:180W/250W, Battery: 24V,8AH/10AH;OR 36V,8AH/10AH Li-ion Max range:20-55km SPECIFICATIONModel:BL-108Motor:180W/250W ... ,high speed brushless,DC hub intelligent motorBattery: 24V,8AH/10AH;OR 36V,8AH/10AH Li-ion battery as chooseMax speed:25KM/H,Pedaling -electric , 20KM ...