A capacitor battery is actually a capacitor, but because its capacity is much larger than that of a normal capacitor, and its external performance is the same as that of a battery, it is named "capacitor battery", also known as "super capacitor". With the intensive research and development of supercapacitor batteries in various countries, the technology is becoming more and more mature, supercapacitor batteries have entered the application stage, and are gradually becoming market-oriented and commercialized.

Features of capacitor batteries:

(1) The charging speed is fast, charging for 10 seconds to 10 minutes can reach more than 95% of its rated capacity;

(2) Long cycle life, the number of deep charge and discharge cycles can reach 10,000 to 500,000 times, and there is no "memory effect";

(3) The high-current discharge capacity is super strong, the energy conversion efficiency is high, the process loss is small, and the high-current energy cycle efficiency is ≥ 90%;

(4) High power density, up to 300W/KG~5000W/KG, equivalent to 5~10 times of ordinary batteries;

(5) There is no pollution in the composition of raw materials, production, use, storage and dismantling of the product, and it is an ideal green power source;

(6) The charging and discharging circuit is simple, no charging circuit like a rechargeable battery is needed, the safety factor is high, and it is maintenance-free for long-term use;

(7) Good ultra-low temperature characteristics, wide temperature range -40℃～+70℃;

(8) The detection is convenient, and the remaining power can be read directly;

(9) The capacity range is usually 0.1F--1000F.

        Supercapacitor batteries also belong to electric double layer capacitors. It is the largest electric double layer capacitor that has been put into mass production in the world. Its basic principle is the same as other types of electric double layer capacitors. It uses activated carbon porous electrodes. The electric double layer structure composed of electrolyte and electrolyte obtains a super large capacity.