The turbine produces 12Watts at 10-16v normally(wind10-20km). When the wind blows a little bit more(20-25km/h) it can produce over 20watts of electricity. i use it to charge 1 12v car battery of 20amphour. It takes about 15-19hours to fully charge the battery. at night i connect my battery to 12v fluorescent light bulbs (3 in total using 36 watts which i salvaged from a bus graveyard,
Power of WIND TURBINE: 12-22W
RPM of motors at a speed of about 15km/h: 400-600rpm
RPM of Blades at a speed of about 15km/h: 130- 200rpm
Max voltage produced: 14-16V
Gears ratio: 1:3
As for the charge controller, it is still beta.