Tesla 4-Year Battery Health Check

Recorded June 4th, 2026

Amazingly, it's already been over two years since I traded in the freshly re-acquired Orange Bolt for the surprise upgrade to a late model Model 3 Dual Motor.

It came to me after two years of hard labor as a rental and/or rideshare vehicle, with 20% degradation already on the battery due to over 120,000 miles and constant DC fast charging.

It's having a much happier life now, with 4% degradation after our first year. Now another year has come and gone, are we still seeing that kind of drop, or is it leveling out?

So I ran the built-in battery health check, which drains the battery down as low as it dares and charges it back up on level 2, and compares the original capacity to current.

TLDW: 1% degradation since previous test, 75% battery health after 4 years and 155,000 miles.

Видео Tesla 4-Year Battery Health Check канала Fast Forward EV