Feature: The volume is small, but the capacity is big. Low temperature and low internal resistance and low leakage current. The capacity is bigger than the same volume electrolytic capacity about 30~40 times. High power density, is 10~100 times of the battery, even reach about 10kw/kg. Charging speed is quick. Charge and discharge lines are simple. Small environmental pollution. With super long life which is up to more than 100 thousand times, and is more than 10-100 times the battery.