What about the alt. pulley? Can that pulley be used with elec. fans?

 

I used the bigger alt pulley and yes I have electric fans. I have never had any charging problems until the other day when I was in the doctor's office. My mom waited in the truck for between 2 and 3 hours with the lights and A/C on. When we stopped for gas, the truck wouldn't start. I jumped it and drove it home and no more probs. Just don't be stupid like me and let it idle for 2 or 3 hours at a time.