It has functioned according to my expectations during the summer that has been, charging around 2-5 amps 70W sometimes a little more but I did not expect to reach any 500W. I connected a 3-phase circuit breaker 63A with 2 resistors of 800W 1 Ohm each to brake the propeller. It worked when it wasn't too windy, but in stronger winds, it still spun quite well. After a month of operation, it started to make noise from the wind turbine when it rotated slowly; in stronger winds, it was not heard. It still charged well. I will take it down in the summer and check what is making the noise. I took the opportunity to order another 500W turbine, but a slightly newer model, which I will then replace with the old one. That way, I can check it at my leisure. Maybe it was a Monday model...