How many watts can a typical person put out?
This graph shows you how much power was generated by a 40 year old casual rider who works out 2 to 3 times a week. I know him well. You will see that the peak power hits about 160 Watts of power output. You will also note that many times the watts trend hits the zero level. This is because the built in charge controller has kicked in and protected the Duracell powerpack from getting too much current which is a safeguard for the small 28 Amp Hour Battery. This data was captured using the sensor and software from http://wattsview.com Here is a power output table for different human power generators you can look at based on some approximations.