In EVs, which component is typically used to store energy for propulsion?

In EVs, which component is typically used to store energy for propulsion?

• A. 12V auxiliary battery
• B. Onboard charger
• C. Traction battery
• D. Cooling system

Answer: (C)

The energy for propulsion in an electric vehicle is stored in the traction battery—the high‑voltage, high‑capacity battery pack that powers the electric motor. It holds the chemical energy and releases it as electrical energy when the motor needs to accelerate or maintain speed. The 12V auxiliary battery serves non‑propulsion systems like lights and electronics, not propulsion. The onboard charger handles converting AC input to DC to charge the pack, not storing energy for use. The cooling system manages temperature to keep components safe and efficient, but it does not store energy. So the traction battery is the component designed to store energy for propulsion.