Regenerative braking is a technology used in electric vehicles and hybrid cars to recover energy that would otherwise be lost during braking. When the driver applies the brakes, the electric motor switches to generator mode, converting the vehicle's kinetic energy back into electrical energy. This energy is then stored in the vehicle's battery for later use, improving overall efficiency. This system not only helps to extend the driving range of electric vehicles but also reduces wear on traditional brake components. By utilizing regenerative braking, vehicles can achieve better energy management, contributing to a more sustainable driving experience and reducing reliance on fossil fuels.