Home EV Charger Battery Degradation helps EV owners estimate future capacity fade from energy throughput, cycling, stress, and calendar aging. Change the assumptions to compare practical home charging scenarios and review the supporting results before making a decision.
The remaining-capacity estimate supports scenario comparison: adjust energy throughput, time, cycle fade, and stress to see which assumptions drive the projection.
This is a user-defined scenario model, not a battery diagnostic. Real degradation is nonlinear and depends on chemistry, temperature, state of charge, depth of discharge, age, and vehicle controls.
A 75 kWh battery receiving 4,500 kWh per year for 5 years accumulates 300 equivalent full cycles. At 0.02% per cycle, a 1.00× stress factor, and 1% calendar fade per year, projected total fade is 11% and remaining capacity is 66.75 kWh.
No. Calendar age, temperature, storage state of charge, cycling depth, power, and battery chemistry all contribute.
One equivalent full cycle is cumulative discharged or charged energy equal to the battery’s usable capacity, even if accumulated through partial sessions.
Not automatically. The effect depends on temperature control, charge power, state of charge, chemistry, and frequency; this calculator uses a user-entered stress factor.
No. Warranty measurements and exclusions are manufacturer-specific and require official diagnostic procedures.
Battery aging is uncertain, so the calculator applies the entered expected fade rate with a sensitivity band rather than claiming exact future capacity.
| Input group | Purpose |
|---|---|
| Primary values | Define the energy, power, capacity, price, or activity in the scenario. |
| Efficiency / adjustment | Translate rated or delivered values into an estimated real-world result. |
| Period / fees | Set the time horizon or additional cost components when applicable. |