NOVELTY - The method involves receiving a direct current electric power from a charge battery (40) e.g. lead acid battery, and receiving an accelerator signal from a driver with signal input devices to provide controllable electric power to a motor (60) e.g. variable speed AC motor. Mechanical power to propel a vehicle is provided by an electric motor by using a speed reduction drive of a power transmission system to accept a relative motion between a vehicle drive train and the motor. The motor is separated from the drive shaft by the reduction drive to provide torque to the vehicle.    USE - For converting an internal combustion vehicle e.g. light truck, four-wheel drive truck, and sport utility vehicle, into an internal combustion-electric hybrid vehicle by using a battery e.g. flooded lead-acid battery, gel cell lead-acid battery, absorbed glass mat lead-acid battery, nickel-cadmium battery, nickel-metal hydride battery, sodium-nickel chloride battery, sodium-sulfur battery, lithium-ion and lithium-polymer battery (all claimed).    ADVANTAGE - Facilitates to provide a simple assembly of mechanical and electric components to easily convert an internal combustion vehicle into a strong plug hybrid vehicle with minimal modification and cost. The motor is separated from the drive shaft by the reduction drive to provide a torque to the vehicle, thus achieving strong hybrid operation on electricity without a need for fuel.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (a) a conversion package or kit comprising a part to convert a particular vehicle from an internal combustion vehicle to an internal combustion-electric hybrid vehicle    (b) a vehicle converted from an internal combustion vehicle to an internal combustion-electric hybrid vehicle.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic block diagram of an electrical component of a hybrid system.    Charge battery (40)    Charger (42)    Plug (44)    Ampere fuses (46,46A)    Curtis/Albright contactors (48,48A)    Controller (50)    Shunt (52)    Ammeter (54)    Voltmeter (56)    Vehicle (58)    Motor (60)    Potentiometer (62)    Pot box (64)    Microswitches (66,84)    Battery (68)    Inverter (70)    Receptacle (72)    Regenerative charger option (80)    Brake pedal (82)