Charging capacity vs. charging speed: What constitutes high charging performance
** The collective fuel consumption values of all models named and available on the German market can be found in the list provided at the end of this MediaInfo.
Most charging processes of an electric car generally occur at home or at work. By contrast, every minute counts and fast charging is essential on a long-distance journey. Therefore, many customers orient themselves toward the maximum charging capacity of their electric car to assess the charging characteristics – but this value is of only limited use if it concerns quick refueling of range at a fast charging terminal. High charging speed (kWh / minute recharged) over the entire charging process is essential for a short charging duration. In other words, a high charging capacity must be available for as long a period as possible.
Charging speed is more meaningful than pure charging capacity
In the current competitive environment, the Audi e-tron** takes the lead with a high-performance charging capacity even if there are already models on the market with a nominally higher output.
However, if the car charges with maximum output over a relatively short period and needs to lower its power early, the charging speed is also simultaneously lowered – i.e. battery capacity recharged per unit of time. Thus, thanks to an ideal charging curve with maximum output available for a long period of time, the charging speed is the more substantial criterion when it comes to charging performance and, ultimately, it guarantees a short charging duration at the charging terminal.
Apr 22, 2020 at 16:07