1. Energy ratio is relatively high. It has high storage energy density, which is about 6-7 times of lead-acid battery; 2.Long service life, service life can reach more than10years； 3.Very low self-discharge rate, can achieve less than 1%permonth； 4. Light weight, about20%of lead-acid products in the same volume; 5. High and low temperature adaptability, can be used in -10℃- 40℃environment； 6.Environment friendly, without any heavy metal included.