Hybrid electric vehicles have a

• A. Two-battery system
• B. One battery system
• C. Three battery systems
• D. No battery system

Answer: (A)

Hybrid electric vehicles rely on two distinct battery systems. A high-voltage traction battery stores and delivers energy to the electric motor, enabling electric propulsion and regenerative braking. A separate low-voltage (12-volt) auxiliary battery powers lights, controls, and other vehicle electronics, with a DC-DC converter keeping it charged from the high-voltage pack. This two-battery setup lets the vehicle manage propulsion and essential electronics independently while the high-voltage system handles driving power. The idea of three batteries isn’t typical for standard hybrids, and there is always at least some battery energy storage in a hybrid, so the two-battery arrangement is the correct description.