I'm glad you didn't look at the videos yet, it just goes to show the amount of respect you have for others opinions or ideas. As for yours, I'll be happy to test it soon. Further more, to summarize the second video I believe, the person on the bike (who as far as I could tell wasn't that smart based on his set up) clocked his output at 300 watts with a multimeter. FWIW, thats approximately 21 amps if you assume the alternator is putting out 14+ volts, which, most car alternators do. (Thats 300 watts / 14 volts = 21.43 amps, see I can do basic math too...)

I'll never understand everyone being so quick to hide behind "basic physics" whenever they think they are encountering a perpetual motion idea. and I love the statment "If just hooking up an alternator that you could power with just pedaling and provide enough "juice" for charging a battery, was easy (or efficient), then EVERYONE would do it." Yeah, because its that easy to peddle to get from point A to point B.. yet the majority of people are too lazy for that and need to take a car... So of course they'd sit at home and peddle their asses off to watch TV.. Are you insane? This isn't perpetual motion, and it isn't easy. Its a hybrid system that combines the stored energy of a battery and the energy output of human work. Would it be anymore efficient than running a chain to the back wheel and using an electric hub motor as an assist, I don't know. The only difference is that this relies more on the electric motor and keeps the batteries charged for a longer period of time. Will they eventually die, well, I guess it will come down to either them or the person peddling.... One will out last the other.

Honestly, I'm not even sure why we are talking about this, as it has nothing to do with my original post.. But, I guess you couldn't get past your idea of what I was asking to actually read what I asked... Which, by the way, I've answered already anyway. So, Good day.