- A six-month-old Model Y showed 99% battery health after 16,000 miles.
- The owner used more DC fast charging than AC charging over a six-month period.
- Careful charging habits may matter more than avoiding fast chargers entirely.
Frequent fast charging is a documented way to accelerate electric vehicle battery degradation. But you can mitigate some of its negative impact by not charging to 100% and never letting the battery run down below 20% state of charge.