Steve's words are wisdom, but I doubt the NSN is going to help anyone very much... it's the number the government uses to purchase the item through their supply system.
In the referenced thread, there is debate about a "short life" of an Optima. As the owner of several - if you leave the Optima connected to a car all winter, it's going to be as dead as disco, come spring-time.
The Bumblebee has a clock which is a constant battery drain and doesn't get driven in the winter. It's on the third Optima... because I didn't realize that I was the dumbass that just didn't disconnect the battery cables before winter storage. Once I figured that out - no more battery failures.
My Wrangler has an Optima. After 12 months of storage while I was overseas, it started right up after reconnecting the cables.
They hold a strong charge over time. No acid venting or dripping. You can't go wrong.