Went to work on the car today. I'm gonna try a couple of things at the track tonight. Threw the battery charger on while I worked on it. I was still set on "quick charge" from the track last time out. I had to run to the parts store, so when I came back I was at the work bench and heard a loud pop. That was followed by a loud hissing noise. I couldn't tell where it was coming from. Then all the sudden I saw water pouring out of some holes in the trunk floor. I quickly open up the trunk and one of my Ultima batteries was gushing like a volcano.

After the clean up it looks like one of the plugs in the top burst. The other battery was hot but appears to be OK. I stuck my spare in there for tonight hoping everything will be OK.

I need to be more careful when I charge them. Has this happened to anyone else? And what's a safe amount of time and at what amperage for charging at the track?
DC