Juiced Bikes Crosscurrent, Red 7.8 Ah, Medium 28mph top speed Powerful 48V battery pack using high quality Samsung 18650 lithium ion cells with 20-25 mile range Pedal-torque and rate sensors provide sophisticated assist logic with a full view of rider intent Easy hill-starting and long battery life get you to the office without breaking a sweat Incredibly responsive and effective braking with tektro dorado e-bike specific hydraulic disc brakes