over charging

I agree, I like to see just under 14v for charging voltage. I tried 3 different regulators and 2 different batteries and I know have it charging at 14.2 volts. It was sitting close to 15 an AC delco regulator and one regulator had it at 15.4 volts on a fully charged battery which is to high in my mind. I also had no loads on either and both batteries were fully charged both batteries tested good. The regulator I settled with was a Rock Auto cheapy unit, not sure how long it will last.