What does BMW i4's regenerative braking system do?

I heard that the BMW i4 has a regenerative braking system. What does this system do and how does it benefit the car?

The regenerative braking system in the BMW i4 captures the energy that is normally lost during braking and stores it in the battery. This energy can then be used to power the vehicle and improve its range.

Instead of using traditional brakes to slow down the car, the regenerative braking system uses the car's electric motor to slow down the wheels. This not only saves energy but also reduces wear and tear on the brake pads and rotors.