JVM225
Well-Known Member
Walmart has Group 31 marine batteries from VMAX, I am not familiar with the brand, but maybe a starting point for research.
Walmart’s brand is made by the same company that makes Interstate and they’re made to the same specs. I’ve gotten some marine dual purpose batteries from them in the past, but I’ve never seen AGM’s in the store and the only one I’ve seen on their website is the Optima group 34.