How do the different motors affect the battery?
The larger motors draw more current so the battery will go flatter quicker. In general you will get a range of about 20km with the 500W motor, 35km with the 350W motor and 50km with the 200W motor. This is without pedalling so you can add an additional 5 – 10 km ontop of these values. These values of course will vary depending on the rider and bicycle. I’ve heard from a customer that purchased a 500W motor that he can travel 44 km with moderate pedal assistance before the battery cuts out. Someone on a 350W motor mentioned that he gets about 55km with some pedaling. The best way to increase distance is by not engaging the throttle fully, breaks between motor use and of course pedaling more. Click here to see some information on electric bicycle batteries, it has a table of estimated distances based on battery capacity and motor current draw.