The original battery went on my C230 two months ago.

Sears was the closest store so I replaced it with a diehard. I had the new battery for a month when I noticed it was leaking battery acid where the vent line connects to the battery. I assumed it was overcharging and checked the voltage. I was getting 13 at the battery with the car off and 14.5 with the car at idle.

I did not think 14.5 was very high, but replaced the voltage regulator anyway about 3 weeks ago. After replacing the regulator I am getting 13 with the car off and 14 with the car on.

I have continually re-checked the trunk to see if the battery was leaking but found nothing until today when I found what amounts to a table spoon or two of acid. It was fairly hot today and it is the first time I had the ac going in the car for a few months, not sure if they are related.

If I replaced the regulator what else could it be?

Could it be the new battery went bad before I replaced the regulator and now even though the regulator is good the battery will not charge properly?

Thanks for any help you can provide

Billmannk