(ET) weeping battery?

[tbamc <tbamc gbta net>]

<If the battery is sitting directly on the cement garage floor, you may 
be getting the result of the coolness of the concrete up through the 
battery case and the evaporation of "boiling" liquid (if it's charging) 
is condensing on the battery top.>

That was my first thought, but I think it unlikely as I've had the 
battery on two different garage floors (one garage is considerably drier 
than the other) and it's not a diffuse condensation--it's puddles.  
Wasn't charging it at any time this happened.

Thanks.

Thon