Exploding Battery

[palallin]

OK: I finally got my truck back this morning--the drivetrain's as tight as a drum; Thanks again, Bob!--and, on the way to work, my battery blew up!

I was on the highway. I smelled what I thought was burning insulation--you all know that smell, I'm sure. Then: BOOM! The engine died. I coasted to a stop and popped the hood. I could find no burned wires under the dash or in the engine compartment, but the top of my battery had disintegrated. There wasn't much acid around.

I suspect the battery was low on fluid--I should point out that only one cell blew. I probably oughta check the voltage regulator output for over-charging.

Can anybody else think of something else I shoul look for?