Why does the Audi e-Tron have regenerative braking and how does it work?

I've heard that the Audi e-Tron has regenerative braking, but I'm not sure how it works or why it's important. Can you provide some insight?

Regenerative braking in the Audi e-Tron is important because it helps to recharge the vehicle's battery while you are braking. Essentially, when you press on the brake pedal, the electric motor switches to generator mode and converts the kinetic energy of the vehicle into electrical energy. This energy is then stored in the battery for later use. This system allows for more efficient use of energy and can increase the range of the e-Tron.

The e-Tron's regenerative braking system also has adjustable levels. This means you can choose how much energy you want to recapture during braking, depending on your driving style and the road conditions. For example, in heavy traffic, you can set it to a higher level to maximize energy recapture, while on open highways, you may opt for a lower level to prioritize smoother driving.