Stumbled across this one, this is a Submarine battery (25,000AH), a small one at that. My sub had 126 of these connected in series. I could not stop watching this video, funny at times. At least he is wearing a facesheild.

Keep watching, it keeps getting better as he keeps adding cells. Enjoy

http://www.blinkx.com/watch-video/submarine-battery-bank-shorted-initially-called-ball-lightning-now-leidenfrost/xaCChWU2tNnHdvFSeRurww