EV Range Degradation & Battery Health Simulator

Explore a simplified model of how an electric vehicle’s battery health and usable range might change over time. This simulator approximates heat cycles, charge cycles, fast-charging penalties, storage aging, cold-weather range loss, and predicted usable capacity year by year.

Educational only · Not manufacturer data or maintenance advice

Battery pack size (kWh)

Approximate usable capacity when new (e.g., 60–100 kWh for many EVs).

Rated range when new (miles)

EPA or WLTP style rating when the car was new.

Average daily driving (miles)

Higher daily miles = more charge cycles and heat cycles.

Fast charging share (%)

Approximate percentage of charging done on DC fast chargers.

Typical climate

Hot climates increase calendar aging; cold climates reduce winter range.

Months parked per year (storage)

Long-term parking at high state of charge accelerates aging.

Typical charge window (%)

Smaller depth-of-discharge windows generally reduce wear per cycle.

Years to simulate

Run projections out to 5, 10, 15+ years to see long-term effects.

Current assumptions (per year)

Approx. full-cycle equivalents

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Fast-charge sessions share

Estimated annual degradation

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Charge cycle estimates assume most energy goes through your chosen charge window. This is a simplified model and not tied to any specific manufacturer.

Battery & range at end of simulation

Years simulated

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Predicted usable capacity

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Predicted health (SoH)

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Estimated summer range

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Estimated winter range

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Winter range includes a cold-weather penalty based on climate; hot-climate cars may see less winter loss but higher calendar aging.

Year-by-year battery health & range

This table shows the predicted usable battery capacity and projected range for each year in your simulation. Degradation includes combined effects of heat cycles, charge cycles, fast-charging penalties, storage aging, and climate.

Degradation curve (simplified model)

Year	Battery health (SoH)	Usable capacity	Summer range	Winter range
Run a simulation to see the degradation curve.

All values are approximate. Real-world EVs can degrade faster or slower depending on chemistry, cooling system, driving style, and many other factors.

How this simulator models EV battery aging

This is a deliberately simplified, browser-only model. It is not based on proprietary data from any car maker and should not be used for purchase decisions or warranty claims. It combines:

Heat cycles – approximated by climate and the number of charge cycles per year.
Charge cycles – derived from daily miles and pack size.
Fast charging penalty – extra wear as the share of DC fast charging increases.
Aging vs storage – more months parked per year increases calendar aging.
Cold-weather penalty – reduces winter range but does not permanently damage capacity.
Degradation curve – early years degrade slightly faster, then taper over time.

For real-world guidance, always refer to your manufacturer’s documentation and trusted EV research sources.