1. Provide power to electronic devices

　　The 18650 lithium battery has a high voltage and capacity, which can provide long-lasting power for electronic devices such as smartphones, laptops, tablets, etc.

　　2. As a power source for handheld lights

　　Due to its high energy density and long lifespan, 18650 lithium batteries are often used as power sources for handheld lights, such as flashlights and headlights.

　　3. As a power source for electric tools

　　Due to its high energy density, high discharge rate, and long lifespan, 18650 lithium batteries are often used as power sources for electric tools, such as drills, hammers, and saws.

　　4. As the power source of electric vehicles

　　Due to its high energy density and long lifespan, 18650 lithium batteries are often used as power sources for electric vehicles, such as electric bicycles, electric motorcycles, and electric vehicles.

　　In short, the 18650 lithium battery plays an important role in modern life, providing convenience and efficiency for our lives and work.

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