but when I got my free replacement on a 3 year battery the guy actually put in an RV battery which fit fine and worked fine
if thats on the VX, that would make sense, a group 34 is a common marine/RV battery, which fits in the VX. thats what I have is the optima blue top which is marine/RV
"Engineers believe if it ain't broke, it doesn't have enough features yet"