Customers often wonder about the differences in car batteries. Why should one battery cost $20 more than the battery next to it? Good Works Auto Repair owner Nathan Merrill explains that lower-quality batteries tend to “sweat” battery acid, which corrodes the surfaces surrounding the battery. This video shows corrosion completely destroying a car’s $450 battery cable. Some automotive battery cables cost as much as $700 – hardly worth the $20 savings on a low-quality battery!