Does DC fast charging damage an EV battery over time?

Frequent DC fast charging does cause slightly more battery degradation over time compared to slower Level 2 charging. However, the effect is gradual and most manufacturers design their battery management systems to mitigate it. Using fast charging as your primary daily charging method is not recommended, but occasional or even regular fast charging during travel is not a serious concern for most drivers. Charge to 80 percent when fast charging rather than 100 percent to minimize stress on the battery.