I hope you can reclaim it.

Here is a do it yourself desulfator project if a conventional charger is not enough.

http://www.alton-moore.net/graphics/desulfator.pdf

The author says it can take a month to break up the large sulfate crystals

Sample quote


Usage
It should be emphasized that pulsing energy to and from the battery happens at less than 100 percent efficiency. This circuit draws about 40 mA from the battery while in operation (less than 1 amp-hour per day), so some additional charging source is needed. For reconditioning a sulfated battery, I simply clip the circuit across the battery terminals in parallel with a 30 watt solar panel.
In my initial testing, it took a month to partially reclaim a pair of golf cart batteries that had been allowed to sit, discharged, for almost a year. They had such a high internal resistance that a very small current would take the terminal voltage over 16 volts.
For use in a functioning power system, you can clip the circuit across the main battery terminals, using as short a lead length as possible. When external equipment, such as an inverter, is connected across a battery bank, then additional low impedance paths are formed. The desulfator’s current pulses will happily flow down these paths as well, and it serves no purpose for the pulses to flow into the inverter.
End quote

The cranking blue top is the same as a red top, the deep cycle blue top is the same as a yellow top. The only differences being the marine terminal style and warranty.

It turns out that my Optima is, indeed, dead.
My charger says there is an internal short and I'm fairly sure that's what was causing my electrical issue.

The date on the side of the battery is December 2006. I can't complain. That thing doesn't owe me anything after 10 years.

I had one last 11 years. Same thing, can't complain.

My smart charger has a desulfate program built into it. The unit draws the battery down, pulses a charge backwards through the battery to clear the plates, then bring it back up to full charge. The process takes at least 24 hours to complete.

My Yellow top lasted 3 years. I killed it by letting it discharge too far. I tried the parallel charging trick and it would come up to voltage, but it would die soon afterward. Standard lead/acid batteries seem to tolerate neglect better.

My truck will sometimes sit for a few weeks without being started. The Optima lasted 10 years with that kind of use.

I had a brake light switch that would hang closed and kill the battery. I don't know if that did it in or not.

I replaced the switch last week but the damage may have already been done.