How does Audi A2's regenerative braking system work?

I've heard that the Audi A2 has a regenerative braking system, but I'm not sure how it works. Can someone explain it to me in detail?

The Audi A2's regenerative braking system captures energy that is typically lost during braking and uses it to charge the vehicle's battery. This not only improves the car's efficiency, but also helps to reduce wear on the brakes.

Regenerative braking systems work by using the car's motor as a generator, converting kinetic energy into electrical energy and storing it in the battery. This process can help to increase the range of electric or hybrid vehicles.

When you press the brake pedal, the Audi A2's regenerative braking system engages and uses the car's forward motion to generate electricity. The system then feeds this energy back into the battery, helping to replenish the energy used while driving.