The packaging size of 18650 batteries is 18 millimeters (diameter) x 65 millimeters (length). this
In addition, the packaging size of 18650 batteries also includes individual packaging size, usually 20x18x12 centimeters.
The 18650 battery is a standardized cylindrical lithium-ion battery named after its size specifications – a diameter of 18 millimeters and a length of 65 millimeters, with the final “0” indicating that it is a cylindrical battery
This type of battery is commonly used in various electronic devices, such as consumer electronics, electric bicycles, power tools, etc
five.