Estimate how long it takes to charge an electric vehicle from 10% to 80% on a DC fast charger, based on battery capacity, charger power, and the vehicle's maximum acceptance rate.
The maximum DC power the vehicle's battery can accept.
Fraction of peak power averaged across the 10–80% window. Typical: 0.65 (older EV) – 0.80 (800V modern).
Most modern EVs take between 18 and 40 minutes to charge from 10% to 80% on a DC fast charger. The exact time depends on the battery size, the charger's maximum output, and how fast the vehicle can accept power. A 75 kWh battery on a 150 kW charger usually takes around 25 minutes in the 10–80% window.
As the battery fills up, its chemistry limits how quickly ions can safely be absorbed. Above 80% state of charge, the battery management system reduces current to prevent overheating, lithium plating, and long-term degradation. This is why the 10–80% range is used as the standard DC fast-charging benchmark — it captures the useful "fast" portion of the charge curve.
The main factors are: the charger's maximum output power (kW), the vehicle's maximum DC acceptance rate, battery temperature (optimal is around 20–35 °C), starting and ending state of charge, battery age, and ambient temperature. Cold batteries charge significantly slower until preconditioned, which is why preheating before arriving at a charger can save several minutes.