18650 lithium ion battery 3.7v characteristics:

　　1. High open circuit voltage: The single operating voltage of rechargeable batteries generally reaches three times that of ordinary nickel-metal hydride rechargeable batteries or nickel-cadmium batteries;

　　2. High energy density;

　　3. High power, suitable for charging high-current batteries;

　　4. The circulatory system has good characteristics and no memory effect;

　　5. Lithium batteries have small self-discharge: at room temperature, the lifespan of lithium batteries is less than 12%, which is less than nickel-cadmium batteries (about 25%/month) and nickel-metal hydride rechargeable batteries (about 15%/month). Due to the solid electrolyte solution phase (SEI) layer on the carbon negative surface layer throughout the charging process, positive ions are able to build up without allowing the electronics to build up, thus avoiding the entire life of the 18650 lithium ion battery 3.7v.

　　6. High battery charging efficiency: 100% of Coulomb efficiency after circulation system;

　　7. Wide operating temperature range: -25~+45c. If the heat resistance of the cathode material and 18650 lithium ion battery 3.7v electrolyte is improved, the single temperature range will be expanded to -40~+70c.

　　8. Green and environmentally friendly organic chemical power source: 18650 lithium ion battery 3.7v is a kind of organic chemical energy storage technology equipment that is friendly to the natural environment and has no environmental pollution.

　　9. Long life of the circulation system: If you choose 80% deep charge and discharge, the service life of the circulation system is greater than 1200 times; if you choose shallow charge and discharge depth, the frequency of the circulation system is greater than 5000 times;

　　10. Good production and processing coordination capabilities, can be made into rechargeable batteries of various shapes, such as pillars and plastic flexible packaging. Therefore, lithium-ion batteries have superior advantages over conventional secondary batteries.

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