The theoretical lifespan of the 18650 lithium battery manufacturer is 1000 cycles of charging. Due to the large capacity per unit density, most of the 18650 is used for laptop batteries. In addition, due to its excellent stability performance in work, it is widely used in various electronic fields: commonly used in high-end high-light flashlights, portable power supplies, wireless data transmitters, thermal insulation clothing, shoes, portable instruments, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.

　　The nominal voltage of a single section is generally 3.6V or 3.7V

　　The charging voltage is generally 4.20V (4.2V-4.3V for lithium cobalt oxide)

　　The minimum discharge termination voltage is generally 2.75V, which can lead to a serious decrease in battery capacity or even scrapping

　　Maximum charging termination voltage: 4.20V

　　Diameter: 18 ± 0.2mm

　　Height: 65 ± 2.0mm

　　Capacity: Above 1000mAh, with a conventional capacity of 2200mAh to 3200mAh. The highest capacity of 18650 batteries is LG, which can achieve 3600mAh, but the price is also not low.

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