Well that sux, I don't like the idea that they don't put a date on these AGM's, you don't know if its a year or 2 old when you get them, however getting one that don't pass a load test and it takes 20 seconds to test is rediculous. I just got a load tester myself to test the battery's, I purchased a Harley battery 4 months ago and I don't think it has the nuts. So I just purchased a Duracell locally so if it takes a dump I can take it back, but it has a 2 year warranty no prorate.
By the way, those are nice counter tops you have in your garage, are you trying to keep up with Trainguy?