Odyssey Extreme Series Group 34 Battery

Not a good value proposition.

I had a diehard platinum AGM, which I believe was made by Enersys / Odyssey. It lasted 12 years before it wouldn’t hold a full charge of 12.9v. Odyssey batteries purchased in the past 5 years won’t charge to 12.9v after one year, and they are super expensive and difficult to warranty. At best you get purchase price which after 1-2 years is quite a bit less than a replacement.