ACkW

AC charging power is how quickly the car can charge from slower alternating-current sources such as home wallboxes and many public posts. It matters because charging decides how the car fits your week and how tiring long trips become. Home AC charging, public DC charging and the charge curve answer different questions.

How to compare it

For home charging, 7.4 kW single-phase and 11 kW three-phase cover most overnight needs. Higher AC power helps destination charging and high-mileage use.

  • Separate AC home charging from DC fast charging.
  • Use 10-80% time and average power for road trips.
  • Remember that battery temperature can change the result.

What changes it

Charging results move with charger capability, battery temperature, starting state of charge, pack voltage and how aggressively the car protects the cells.

  • A warm battery usually charges better than a cold one.
  • The useful window is normally 10-80%, not 0-100%.
  • The lowest limit wins: car, charger, cable, grid or temperature.

Common trap

The car, cable, charger and building supply all need to support the same power. The weakest link sets the speed.

  • Peak kW is not the whole session.
  • The charger rating does not guarantee the car will accept that power.

AC: what happens during a charge stop

Charging is a curve, not a single peak. The average over the useful window is what shortens a trip.

AC across EVRadar

Based on 1000 published cars

avg 10.7 kW

Lowest

2.2 kW

Typical

10.7 kW

Highest

43 kW