Chemistry determines the cell voltage (1.2V or 1.5V and there are others like Lithium at 3.0V), whether the battery is rechargeable, and how the voltage changes as the battery discharges i.e. at what voltage is the battery considered to be flat or fully charged. Switched mode power supplies. One more point.
The Average Bike Riding Speed. The average road bike speed is between 11 and 12 mph. Bike riding speeds vary widely depending on your riding conditions. When you are zooming down a paved hill, your speed may increase to over 20 mph, while you may slow to only a few miles per hour when you are climbing a steep or rocky grade.
Senior Member. I don't know about you the rest of you but 25 mph sounds a little fast as a average bike speed to shoot for unless the bike leg is going down a mountian. They would have to pick me up in a ambulance at the end of the run if I did 25 mph average on the bike. 09-27-05, 04:07 PM #17. Senior Member.