Short answer: Choose the charging power your vehicle and electrical supply can actually use. A 22 kW EV charger will not make every car charge at 22 kW. The vehicle’s onboard AC charger, available phases, circuit, cable and settings can each set a lower limit.
What do 7.4 kW, 11 kW and 22 kW mean?
As general AC examples, 7.4 kW corresponds to approximately 230 V at 32 A on one phase; 11 kW to 400 V at 16 A on three phases; and 22 kW to 400 V at 32 A on three phases. These are nominal electrical ratings, not a promised charging speed for every car or property. Check the rating on the exact product and its final documentation.
Why can charging be slower than the charger rating?
Your car’s onboard AC charger limits the power it can accept. A car limited to 11 kW AC cannot reach 22 kW simply because the wallbox is rated at 22 kW. The available electrical supply, circuit protection, cable rating and current setting also matter. Power may change during a session as the vehicle manages its battery.
How do you estimate charging time?
Divide the energy to add, measured in kWh, by the charging power actually achieved, measured in kW. For example, adding 44 kWh at a sustained 11 kW is roughly four hours before charging losses and power changes. Treat this as a planning estimate, not a guaranteed completion time.
Four checks before choosing
- Check your vehicle’s maximum AC charging power and supported phases.
- Ask a qualified electrician whether the property has a suitable supply and dedicated circuit.
- Compare the selected EV charger’s input arrangement, vehicle connection and rated power. For WityPower Q, the CEE and hardwired versions have different installation requirements.
- Confirm applicable installation and network-operator requirements for your location, then follow the exact model’s final manual.
Once these points are clear, compare the available Q Series configurations. If a product detail is unclear, contact WityPower Support before ordering.