What is the difference between regenerative braking and traditional braking in the Audi e-Tron?

I've heard that the Audi e-Tron uses regenerative braking, but I'm not sure how it differs from traditional braking systems. Could you explain the differences and which one is more efficient?

Hi Sarah, regenerative braking in the Audi e-Tron is a type of braking system that uses the electric motors to slow down the car and convert that kinetic energy into electrical energy, which is then used to recharge the car's battery.