Estimate EV battery capacity degradation over time based on cycles, temperature, and charging habits.
Input Parameters
Results
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Remaining Capacity
kWh
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Degradation
%
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Est. Remaining Range
miles
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Years to 80% Capacity
Note: Most EV manufacturers warrant batteries to 70-80% capacity at 8 years/100k miles. Charging to 80% and keeping SOC between 20-80% significantly reduces degradation. Heat is the biggest enemy of battery longevity.
Reference
Calendar Degradation ≈ 2% per year
Cycle Degradation = 0.01% per cycle × SOC stress factor
Total Degradation = Calendar + Cycle deg
Remaining Capacity = Initial × (1 − Total Deg)
SOC Stress: 0.8× (20-80%), 1.0× (10-90%), 1.3× (0-100%)