A regenerative brake (KERS) is an energy recovery mechanism which slows a vehicle or object down by converting its kinetic energy into another form, which can be either used immediately or stored until needed. This contrasts with conventional braking systems, where the excess kinetic energy is converted to heat by friction in the brake linings and therefore wasted. The technology requires a battery, brakes, key, circiut board, and connecting wires. The system works on the heat acquired by the brakes during it's deaccelerating process. When Brakes are applied, the heat enery produced is used as a source to create electric pulses which, then transfer to Circuit Board and converted into Electrical energy and then stored in battery. A key(not shown) then is pressed, it disconnects the main circuit by disconnecting the key(shown); and transfer the stored electrical energy to hybri engine and gives a temporary boost to the car just like a nitrous oxide boost.