The short answer
EV batteries typically last 15 to 20 years or well past 100,000 miles. They degrade only about 2.3% of capacity per year on average, and most retain 80 to 90% of original range at 100,000 miles. Federal law also requires at least an 8-year or 100,000-mile battery warranty, so most owners never pay to replace one.
How many miles and years does an EV battery last?
Most EV batteries last 15 to 20 years and well beyond 100,000 miles. After 100,000 miles, the majority still hold 80 to 90% of their original capacity, according to Recurrent Auto's analysis of more than 15,000 EVs. At that rate, many modern EVs are on track to keep usable range past 200,000 miles before a battery becomes a limiting factor.
Per Recurrent Auto's degradation data, batteries fade gradually rather than failing suddenly. For how that range plays out day to day, see our guide to how far an EV can go on one charge.
How fast do EV batteries degrade?
EV batteries lose about 2.3% of capacity per year on average. The drop is fastest in the first year or two, then slows to a gentle decline, which is why a battery can keep usable range for well over a decade. Climate, charging habits, and how often the pack sits at very high charge all influence the exact rate.
| Mileage | Typical capacity retained |
|---|---|
| New | 100% |
| 50,000 miles | ~90–95% |
| 100,000 miles | ~80–90% |
| 150,000 miles | ~75–85% |
Does fast charging wear out an EV battery faster?
Only slightly. Frequent DC fast charging can add a small amount of long-term degradation, but modern battery management systems limit the impact. Heat, leaving the pack at very high states of charge, and simple age matter more. Most drivers who fast-charge regularly still see normal battery lifespans.
- Charge to 80% for daily use: reserving 100% for road trips reduces wear.
- Avoid extreme heat at full charge: heat plus high charge accelerates aging.
- Home Level 2 is gentlest: slower charging is easier on the pack than constant fast charging.
Are EV batteries covered under warranty?
Yes. Federal law requires every EV sold in the US to carry a battery warranty of at least 8 years or 100,000 miles, and California mandates 10 years or 150,000 miles, with several states following. Batteries rarely fail outright; if a covered failure or excessive capacity loss occurs, the automaker repairs or replaces the pack at no cost.
The EPA notes that warranty-covered failures are uncommon, since packs degrade gradually rather than dying suddenly.
How much does an EV battery replacement cost?
Out of warranty, replacement runs roughly $5,000 to $17,000 depending on the vehicle. A Nissan Leaf pack is about $5,000 to $8,500, a Chevy Bolt $6,000 to $17,000, and a Tesla Model 3 or Y $10,000 to $15,000 for an OEM pack. Most owners never face this cost thanks to long warranty coverage.
- Nissan Leaf: ~$5,000–$8,500
- Chevy Bolt: ~$6,000–$17,000
- Tesla Model 3 / Y: ~$10,000–$15,000 (OEM)
Lower running costs offset that risk over time — see how EVs compare in our guide to EV vs. gas maintenance costs.
Frequently asked questions
How many miles can an EV battery last?
Most EV batteries last well beyond 100,000 miles, retaining 80 to 90 percent of original capacity at that point, per Recurrent Auto. With an average degradation of about 2.3% per year, many modern EVs are projected to keep usable capacity past 200,000 miles.
Does fast charging degrade an EV battery faster?
Slightly, but less than many assume. Frequent DC fast charging can add a small amount of long-term degradation, yet modern battery management systems limit the effect. Heat, very high states of charge, and age matter more, and most owners who fast-charge regularly still see normal lifespans.
What happens when an EV battery dies — is it covered under warranty?
Yes, for most owners. Federal law requires an EV battery warranty of at least 8 years or 100,000 miles, and California mandates 10 years or 150,000 miles. Batteries rarely fail outright; they lose capacity gradually, and a covered failure is repaired or replaced at no cost.
How much does it cost to replace an EV battery?
Out of warranty, a replacement runs roughly $5,000 to $17,000 depending on the car — about $5,000 to $8,500 for a Nissan Leaf and $10,000 to $15,000 for a Tesla Model 3 or Y. Most owners never pay this because the federal warranty covers the battery for years.
Sources
CarsLens is editorial guidance, not individualized advice. This page draws on Recurrent Auto and the EPA.