I bought a yellow top back in July of 2008. I even had a hard time trying to find the one I needed because it wasn't listed on their regular list at the time, so of course it was more expensive than the "off the shelf" ones.
This is at least the 10th time it has died out in that time. It has been sitting less than a month this time in my 2004 GTO and it is now down to 5.3 volts (don't even know if it will even take a normal chage being so low). I bought a trickle charger for the winter but I figured I wouldn't need it yet, because it's only been sitting a few weeks. I never had this problem with my factory battery so I'm not thinking it's a draw or anything. These yellow tops are supposed to be one of the best deep-cycle batteries out there? hmmmm.....
I had enough of this, so I finally decided to look up the warranty and of course it's expired. I still wasn't even that mad yet, until I saw that EXACTLY 6 months AFTER I bought my battery, they changed the warranty from 12 months to 36 months!!!
Well, I'm all done venting so now I just sit here and wait to see if it takes a charge.