A truck battery is a high-capacity, durable power source designed to meet the heavy-duty demands of commercial vehicles. These batteries provide the necessary energy to start the engine, power lights, and run auxiliary systems like air conditioning and onboard electronics. They are built to withstand extreme temperatures, vibrations, and long hours of operation. Truck batteries typically offer a higher reserve capacity and cold cranking amps (CCA) compared to car batteries, ensuring reliable performance in tough driving conditions.