Not exactly RV related, but I figured I might get some help here. I need to replace one of the batteries in my Lund fishing boat. I bought a Interstate Deep Cycle Pro 27 3 years ago and it is dead...
I also have a Lund boat and my prior Walmart Everstart deep cycle battery lasted over 8 years. The replacement is also an Everstart and will be in it's 3rd year this spring. The start battery is 6 years old and checks out okay but I will replace it this spring. I make sure they are always fully charged and have an onboard charger to insure that happens. IMO you can't go wrong with Walmart's battery for the application.