Yes mine is the ytx 14 BS. Already charged it on regular mode. On mine it doesn't say AGM on it so I figured it was a regular battery. Hope I didn't shorten the life of it too bad. Even the one you showed doesn't say it's a AGM, so I did more research, and the model you have and the ytx are both AGM. Wish they would label them on the batteries, but they dont.
I use a Schumacher 6V/12V automatic battery maintainer. It is safe for standard and AGM batteries. I have used it on everything from my lawnmower to motorcycles, Pioneer 500, and vehicles that I don't drive very often.
I have a "Battery Tender Plus", It came with a Lug Harness that you attach to your battery and just let it dangle outside the battery box. Easy to get to, and cheap. I bought a couple of xtras for the 4 wheelers. About 7 or 8 bucks on Amazon.