Why Does a 22kW Charger Only Charge an EV at 11kW?

Learn why a 22kW EV charger may only charge your car at 11kW due to onboard charger limits and how to optimize charging compatibility.

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A 22kW charger only charges at 11kW due to the vehicle's onboard charger limitation. Most electric vehicles (EVs) have an onboard charger with a maximum charging capacity, which may be lower than the output of the external charger unit. If your car's onboard charger maxes out at 11kW, it won't take advantage of the full 22kW provided by the charging station. To optimize charging, ensure your vehicle and the charging station's capacities are compatible.

FAQs & Answers

  1. Why does my electric car charge slower than the charger rating? Your EV charges slower than the charger's maximum output because the vehicle's onboard charger has a limited maximum capacity that may be lower than the external charger's power.
  2. What determines the charging speed of an electric vehicle? The charging speed depends on both the external charger's power output and the EV's onboard charger's maximum capacity.
  3. Can I upgrade my EV's onboard charger to charge faster? In most cases, upgrading the onboard charger is not feasible, as it is integrated into the vehicle's design; selecting compatible chargers is the recommended approach.

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