A much less silly consideration was the dimensions. I wanted batteries that could fit in the bottom of the Adrian Steel cabinet that came with the van. I read a lot of spec charts.
And, because I wanted to stow the batteries in the cabinet, where they wouldn’t be convenient to get at, I also wanted sealed batteries. I don't enjoy battery maintenance anyway. The extra cost was worth the pleasure of just hooking them up and forgetting them.
This led me to Sun Xtender absorbed glass mat batteries. Two 12V, 104Ah beauties. Enough power to run my fridge and charge my electronics. Exactly the right dimensions to fit in the cabinet. And not maroon. They cost $295 each when I bought them in 2013. The Sun Xtender series is made by Concorde—another big name in deep cycle lead-acid batteries.
I’ve heard Sun Xtenders were never intended for mobile applications. Something about the cases not being rugged enough. Or not maroon enough. But, as you can see, they’ve held up just fine, despite a lot of washboard roads. And they still function properly, even though they’re getting on in years. Whereas I would be lazy about flooded cell battery maintenance, I’m almost religious about never drawing more than 50 percent of charge. In fact, I seldom go below 70 percent.
When it’s finally time to replace these batteries, I have no qualms about getting another pair of the same. Unless the price of LiFePo batteries come way down. Or there’s some newer, cheaper, better technology by then. As long as they’re not maroon.