How long do EV batteries last?

Modern EV batteries are generally designed to last many years and often the life of the vehicle, with gradual capacity loss rather than sudden failure. How much range is lost over time depends on the battery chemistry, climate, how often it is DC fast charged, and how often it sits at very high or very low charge. Most batteries are covered by a warranty of at least 8 years or 100,000 miles. Hybrid batteries have also proven durable in many models.