Thanks to teejaywhy bought a couple of Deka GC 15's for the $144 each. They are rated higher than the Les Schwab's I was looking at. After I added water and charged them up, connected them to the TT. Right now we are sleeping in the TT as the new short queen mattress we bought a week ago showed up as a short king size. I had built a bed frame for our park model bedroom so we got rid of our old old mattress expecting the new mattress within a week. Figured we'd sleep in the trailer which has a great mattress. Now it loooks like another week or so. Anyway, I hooked up the 6 volts and turned off the shore power to test out the batteries to see how long they'll last. I've heard its good to run them down a time or two to break them in proper. We'll see.