What are regenerative brakes?

Regenerative brakes, found in electric cars, is a braking system that allows the energy used when slowing down to be stored and later used. In a traditional braking system, every time you press the brake pedal the kinetic energy that was previously pushing the car forward must be dispelled in order to slow down – the majority is dispelled as heat energy which is wasted. New technology in electric cars has allowed this heat energy to be converted into electricity and transferred to the car battery, allowing more distance to be travelled from a full charge.