[petek]

Mike,
Jim has nailed it, the battery is probably toast. I've had my optima battery for at least 4 years, but I charge it regularly and the battery seems fine still (I'll know for sure in a month or so when my Cobra is on the road).

Given the spiral construction of the plates in the Optima you might be able to knock some of the sulfation off of some of the plate surface by charging the battery for a couple of days. Perhaps the heat generated will push the sulfation into solution.

Mind you ... it's a BIG might / maybe / perhaps.