A full hybrid or Strong hybrid is sometimes called a vehicle that can run on just the engine, just the batteries, or a combination of both. Ford’s hybrid system, Toyota’s Hybrid Synergy Drive, and General Motors/Chrysler’s Two-Mode Hybrid technologies are complete hybrid systems.
The Toyota Prius, Ford Escape Hybrid, and Ford Fusion Hybrid are examples of full hybrids, as these cars can be moved forward on battery power alone. A large, high-capacity battery pack is needed for battery-only operation. These vehicles have a split power path that allows more flexibility in the drivetrain by interconverting mechanical and electrical power at some cost in complexity.