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EV Battery Health & Degradation Estimator

Estimated state of health

Enter age and mileage

How this calculator works

How to use the EV Battery Health & Degradation Estimator

The Formula

Calendar aging, cumulative miles, and frequent DC fast charging all contribute to capacity fade. Thermal management and chemistry vary widely by model.

Practical Example

This is a simplified model for curiosity—not a diagnostic. For warranty or resale, use dealer scans or OBD SoH reports.

About EV Battery Health & Degradation Estimator

What affects EV battery health

Calendar aging, cumulative miles, and frequent DC fast charging all contribute to capacity fade. Thermal management and chemistry vary widely by model.

Limitations

This is a simplified model for curiosity—not a diagnostic. For warranty or resale, use dealer scans or OBD SoH reports.

Frequently asked questions

Q: What is SoH? A: State of health—remaining capacity vs. new, usually 100% when new. Q: Can SoH improve? A: No, only slow further degradation with good habits.