Super capacitor with batteries used in internal combustion start mechanical and electrical system, can effectively protect the battery and prolong its life, reduce its capacity, especially in the case of low temperature and battery power losses, to ensure reliable starting. Battery discharge capacity decreased obviously in low temperature environment, will cause the tank vehicle cannot be started, the impact on the military combat readiness. Super capacitor wide working temperature range, can be in to 40 ℃ environment, to ensure the electric start system is often the power supply, make the tank vehicle start-up success at a time.