Due to its small size, large capacity, repeatable charging and discharging, and good safety, it is widely used in various portable electronic products, such as mobile phones, laptops, cameras, power tools, etc.

　　18650 lithium batteries have multiple advantages.

　　First of all, compared with standard AA and AAA sized Dry cell, their capacity is larger, allowing for longer use.

　　Secondly, due to its use of lithium-ion battery technology, it can be repeatedly charged and discharged, greatly extending the battery's service life.

　　In addition, it also has characteristics such as high energy density, high safety, and environmental protection. But at the same time, it also has some drawbacks, such as high cost and the need to use a dedicated charger for charging.

　　The application of 18650 lithium batteries is very extensive, except for common mobile phones

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