Charging time for an electric vehicle is principally determined by the charging point rate.

Home charging and commercial charging points (fast and rapid chargers) differ significantly in charging power and therefore differ in the speed at which they charge your vehicle. This power is defined in kW, which signifies how much power can be supplied in an hour. Charging time can be estimated by dividing vehicle battery capacity by the power output of the charging point. Please bear in mind that this is only a guide and that vehicle acceptance rates may limit the speed of charging with AC charging.

Home charging

For our home charging points, we expect a maximum of 7.2kW, depending on the charger.

This means home chargers are significantly slower than commercial charging points. Our Type 2 home charging point at around 7kW takes up to four hours to charge most models of electric vehicle. Other domestic charging point options for either Type 2 or universal charging sockets have a charge time of approximately six to ten hours, depending on the EV model. With most EV users utilising home chargers for easy, overnight charging, you can be sure that professionally installed home charging points from an OLEV-certified installer will be a safe and convenient choice.

If you would be interested in learning more about Alfa Power’s domestic installation packages, click here.

Fast charging

Fast chargers output up to 22kW and have a charge time of up to four hours. This makes fast charging points a convenient option for public charging in locations such as workplaces, shopping centres or leisure parks, where vehicles can be charging while you go about your activities.

A consideration with fast charging (AC charging) is the vehicle’s power acceptance rate. If the maximum charging rate of the vehicle is less than the maximum charging speed of the charging point, then charging time will be limited by the vehicle. If the charging point speed is lower than the maximum charging rate of the vehicle, then the charging point limits the speed of charging.

For example, a Nissan Leaf Upgrade has an acceptance rate of 6.6kW, even if the fast charger is 7kW or 22kW. In this case, charging is limited by the onboard charger, not the charging point. As a guide, the table below contains figures relating to the acceptance rates (labelled ‘AC Charging Charge Power’) for a small selection of EV models and clearly demonstrates that acceptance rates differ greatly and are distinct from battery capacity. Details on acceptance rates for specific models can be found in the vehicle manufacturer’s guide.