05 Navigator, I need to replace my house batteries. Coach has 8 golf cart batteries. They are pretty much all dry and bubbled out at the sides. I do not Boondock, just need batteries to keep lights and refrigerator on when I am not plugged in for short times. Sometimes overnight . I've heard Walmart is the best place to get these batteries? Is there different sizes I should consider? Or just any golf cart battery will do?