All of the deep cycle batteries come from only a few sources... WALMART batteries just have their own sticker on them...
It isn't all that hard to pay alittle bit of attention to the batteries. If you have the smart mode converter/chargers that actually works in smart modes they will almost take care of your batteries for you...
I installed 4ea standard issue INTERSTATE GP24 SRM-24 12V 85AH batteries in 2008 and lost one in early 2009 because of not paying attention to what was happening. I have been using the remaining three batteries ever since mostly camping off the power grid... They are just now starting to fall off on performance... I got these from the dealer where I purchased my OFF-ROAD POPUP camper at a real good deal. They had stacks of these batteries to install in the new trailers on their lot...
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Roy Ken