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have had 2 of their deep cycle batteries.. Bought one and the other came with the boat.. One went with a boat I sold.. Still starts it from 4 years old.. Other came with the boat I have now... Both have been surprising good.. They are the cheaper black ones too
There aren't that many different companies making batteries. They all come from the same few factories.
If you're interested in maximizing the replacement interval, consider purchasing a marine grade AGM (Absorbed Glass Mat) cranking
battery. In my experience they last significantly longer than the standard wet/flooded cell models. They do cost significantly more, but they stand up to abuse better, don't loose their charge as quickly. I also keep my boat and motorcycle batteries on a floating point style charger for winter storage. That also seems to lengthen their useful life.
Walmart's bats are made by Johnson controls which ownes 49% of Interstate.
The contract was given to Johnson about 3 months ago
My contact at Interstate says that the bats are alittle lighter in build but theres not much difference.
He thought that Walmart was going to offer a 12 month total replacement