What is the regenerative braking system in an Audi e-Tron?

I have read about the regenerative braking system in an Audi e-Tron but still don't fully understand how it works and how it affects the driving experience. Can anyone explain it in more detail?

The regenerative braking system in the Audi e-Tron captures energy from the braking process and stores it in the battery for later use. This not only improves the overall efficiency of the vehicle, but also helps to extend the range of the battery.

In simplest terms, the regenerative braking system works by using the electric motor as a generator, producing electricity when the brakes are applied. This energy is then fed back into the battery, allowing for more efficient use of energy.