Rapid charging power levels
50 kW, 150 kW, 350 kW — and what your car can actually take.
You'll learn
- Explain rapid charging power levels clearly and accurately
- Read the numbers that define the behaviour
- Apply the idea to a real charging session
Overview
Charger power is a ceiling, not a promise. The delivered figure is the minimum of post, cable, car and pack state.
In depth
| Class | Power | Typical 10–80% | Notes |
|---|---|---|---|
| Fast DC | 50 kW | 45–60 min | Legacy, air-cooled cables |
| Rapid | 100–175 kW | 25–35 min | Current mainstream |
| Ultra-rapid | 250–400 kW | 15–22 min | Needs 800 V or high-current cooling |
Try the numbers yourself
Set the post power and see where the vehicle limit takes over.
Chemistry
Pack capacity75 kWh
Charger power150 kW
Ambient temperature20 °C
State of charge20 %
Driving / auxiliary load0 kW
Power accepted
150.0kW
Pack voltage
368V
Current
408A
Pack temperature
29.2°C
Efficiency
94.7%
Heat generated
8.32kW
Charging curve150 kW peak
0%50%100%
Time to 80%
18 min
Key takeaways
Remember this
- Post power is a ceiling, not a delivered figure.
- Most cars cannot use 350 kW.
- Ultra-rapid mainly benefits 800 V vehicles.
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