probably that he needs to buy a new battery or two from them.....//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif
I have seen them bulge but never that much. Sure your alternator / external regulator isnt messed up? Tho if that was the case im sure it would have been more then one battery.
According to some d|ckhole I had a big PM fight with on CAF...a rapid discharge (such as a short) can cause a battery to explode (from pressure, not spark).
I have never heard of such an anomaly, or found theory to support it, or evidence of it happening, but this person thought I was a douchebag for arguing it.