I agree with you, I feed the batteies with a bicycle driven magneto that puts out 12vdc and then run the electrics/electronics off of the batteries or through an inverter to power up the 110vac fans and lighting.

I am going to experiment using an anemometer to see if it can trickle charge a cell phone. I have serious doubts since it's power output is so small. It's worth the time to find out.