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Interactive Tool

EV Charging Time & Speed Simulator

Find out real charging times for various EV models and charging stations. Compare slow alternating current (AC) charging and fast direct current (DC) charging on the go. This tool is minutes. The stall is kW; the session is kWh — kW vs kWh in electric cars. Match the inlet before you model the minutes — NACS vs CCS. The onboard charger, not the wallbox label, sets AC speed. What that part is: onboard charger. How AC sessions compare with DC stops: AC fast charging. For the catalog peak-DC ranking, open the fastest charging EVs list.

1. Select EV & Charger

Initial Charge (SoC) 10 %
Target Charge (SoC) 80 %

2. Simulation Results

Estimated Charging Time
-- min
Added Range (estimate)
-- km
Battery Capacity: -- kWh
Max. EV Charging Limit: -- kW
Average Charging Power: -- kW

Charging Curve & Power Flow

Hover or touch and drag over the chart to inspect details at specific SoC levels
*Charging speed is limited by the vehicle's maximum capability and drops as State of Charge increases (especially above 80%). The estimation assumes an average charging curve at optimal battery temperature.

Why does charging speed slow down at the end?

Last updated 2026-09-23.

Charging speed (especially on DC fast chargers) is not constant. An EV battery charges at its highest rate between **10% and 50% capacity**. Above 50%, the power starts to taper down, and **above 80%, it drops dramatically**.

This is due to the chemistry of lithium-ion cells. Charging a battery is like filling a stadium: at first, people enter quickly and easily find empty seats (low resistance). Once most seats are occupied, newcomers must search for remaining seats more slowly to avoid crowding (protecting cells from overheating and damage). Therefore, on long-distance trips, it is highly recommended to **unplug and continue driving once you reach 80% charge**.

Difference Between AC and DC

**AC (Alternating Current)**: The car converts the current itself using its built-in onboard charger. That AC limit is not a field in this catalog — common wallbox labels are 7.4 kW or 11 kW, but the car's onboard converter sets the pace. Typically used overnight at home.
**DC (Direct Current)**: The station delivers current directly to the battery at huge power (50-350 kW), allowing charging during a quick coffee break. This simulator models energy into the pack. Exporting it back is vehicle-to-grid charging.

Temperature's Impact on Charging Speed

In freezing temperatures, a battery without preheating will charge much slower (so-called coldgating). Modern EVs actively preheat the battery to an optimal 25-30 °C before arriving at a charger (if entered in the navigation system).