Went out this morning to fire up the coupe, the battery is or was bought in `97 so its got some age to it, it has been showing signs of weakness, anyways turned the key spun once and quit, so I turned the key off and prepared to pull the cables off, as I was getting the wrenches out when the battery sort of had a melt down and venting off the vent holes with steam, when it quit I pulled it, anybody ever had that happen...?