The Optima was the last battery I bought, over 16 years ago, all my modern cars have been using "free" batterys from the junk piles, now my A has one when the
Optima died last year, I didn't have any 6v ones so I cut a 12v in 1/2
I figured if I bought a new Optima I wouldn't get the same service I got from the first one,that I would be dissapointed, I looked for other 6V agm options but didn't find any, I contemplated cutting apart one of these agm Mercedes batterys and trying to put it inside the script case, it would be nice if the repro script batterys while looking original on the outside used new tec inside so they would last more than the 2-3 years
Another option is to go to Interstate ans ask if they have any "econo" 6v batterys, I got 5 years fron one of them before the Optima, they are usually warranty returns that wern't really bad, usually not very old