How fast does an EV battery degrade over time?

Most EV batteries degrade at a rate of approximately 1-3% per year under normal conditions. After 10 years, most batteries retain 70-90% of their original capacity. Factors like climate, charging habits, and driving patterns significantly affect the rate of degradation.

Does fast charging damage EV batteries?

Frequent DC fast charging can accelerate battery degradation by 10-30% compared to exclusive Level 2 charging. The heat generated during fast charging stresses battery cells. It's recommended to use fast charging primarily for long trips and rely on home Level 2 charging for daily use.

What is the average lifespan of an electric vehicle battery?

Most EV batteries are designed to last 15-20 years or 100,000-200,000 miles before significant capacity loss. Manufacturers typically warranty batteries for 8 years or 100,000 miles with a minimum 70% capacity retention. With proper care, many batteries exceed these estimates.

EV Battery

EV Battery Degradation Calculator

Estimate your electric vehicle's remaining battery capacity over time based on usage patterns, climate, and charging habits.

Input Parameters

Battery Capacity (kWh)

75 kWh

Typical range: 40 kWh (compact) to 100+ kWh (large SUV/truck)

Initial EPA Range (miles)

300 mi

Annual Mileage (miles/year)

12,000 mi

Climate Zone

Primary Charging Method

Typical Charge Level Range

Projection Period (years)

10 yrs

Results & Projection

Capacity at Year 5

94.5%

Capacity at Year 10

89.1%

Est. Range Loss

33 mi

Degradation Rate

1.09%/yr

Battery Health 89.1%

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Year	Capacity	Range	Status

EV Battery Degradation Calculator

Input Parameters

Results & Projection

Capacity Retention Chart

Battery Health Tips