Battery Degradation

How Does Ford Handle Battery Warranty on Its Electric Vehicles? Ford covers EV high-voltage batteries for 8 years or 100,000 miles, including capacity loss below 70%. See what is covered, excluded and how claims work. Does Insurance Cover EV Battery Degradation? (Why the Answer Is Usually No) Does insurance cover EV battery degradation? It's usually a warranty issue, often tied to a 70% capacity rule. See the line between warranty and insurance.