Water in Battery Box - Mini S
 

I just bought a 2003 Mini S and find that water is building up in the battery box. I would like to know if anyone has seen this problem? There doesn't appear to be any sign of a specific location of the water entering. I don't know if I have a leaky seal, a bad weld joint that might be leaking or even that the battery is building up heat and "sweating" under the foam covering(I am in Florida). Any help would be appriciated.