GOOD TO KNOW: Key e-mobility terms at a glance

Whether you are a newcomer or a passionate electric car driver, new technologies also bring with them a multitude of technical terms that leave many users with lots of questions.

For all newcomers and anyone who wants to keep a good overview, we have summarized some helpful terms together with our e-mobility experts:

AC and DC charging
AC = alternating current, standard for charging at home or in everyday life (e.g., 11 kW). DC = direct current, used at fast charging stations (e.g., 150 kW or more).
CCS (Combined Charging System)
The fast charging plug commonly used in Europe for direct current charging. It combines AC and DC charging in one connection.
Charging infrastructure / roaming
Charging with just one app or card at many different providers is called roaming. It makes charging on the go easier.
Charging power (kW)
This indicates how much energy is charged per hour. The charging power influences how quickly an electric car can be charged.
Charging losses
During charging, some of the energy is lost as heat – which is why the battery often receives slightly less kWh than was charged.
Recuperation
Energy recovery during braking: kinetic energy is converted into electricity and fed back into the battery.
State of charge (SoC)
This value indicates the battery's state of charge as a percentage – comparable to the fuel gauge in conventional cars.
GHG quota (greenhouse gas reduction quota)
Electric car owners can have their CO₂ savings certified and sell them, often earning several hundred euros a year.
Type 2 plug
Standard plug for alternating current (AC) charging in Europe – widely used at public charging stations and wall boxes.
Wall box
Private charging station for home or business use. Charges safely and faster than a power outlet and often offers smart features.