What is a battery-electric vehicle?

A battery-electric vehicle is an electric vehicle where the electric energy to drive the motor(s) is stored in an on-board rechargeable battery.

What is fast charging?

Fast charging makes use of high power (20 kW or more) allowing to charge the battery up to a level of 80% in 30 minutes. It is mostly done by a direct-current connection and needs a heavy and expensive fixed infrastructure and electric connection.

What is semi-fast charging?

Semi-fast charging typically makes use of a power of about 7 to 10 kW and allows to charge two or three times as fast as normal charging. It needs a dedicated power-outlet, the power of which (32 A single phase or 16 A three phase) can still be accomodated however by most electric installations.

What is the specific power of a battery

The specific power of a battery gives the amount of electrical power that can be delivered per unit of battery mass. It is expressed in W/kg. The specific power is a measure of acceleration performances of the vehicle with a specific battery.

What is the specific energy of a battery?

The specific energy of a battery gives the amount of electrical energy stored in the battery per unit of mass. It is expressed in Wh/kg. The specific energy is a measure of the range a vehicle can cover with a certain type of battery.

What is regenerative braking?

Electric motors can also act as generators. During regenerative braking, the motor can thus take kinetic energy from the wheels, slowing the vehicle, and send this energy, in electric form, back to the battery. Depending on traffic conditions and on the topography on the road, an energy saving of typically 10% is possible this way.