Explain the model specifications of cylindrical lithium batteries

There are many types of cylindrical lithium batteries, such as 10440, 14500, 16340, 18650, 21700 and so on. Cylindrical lithium battery cell: usually represented by five digits. The first two digits refer to the diameter of the cell body, and the last three digits refer to the cell body height. For example, 14500 refers to an AA battery, which is approximately 14mm in diameter and 50mm in height. ◆10440 battery 10440 battery is a lithium battery with a diameter of 10mm and a height of 44mm. It is the same size as what we often call the AAA battery. The capacity of this battery is generally small, only a few hundred mAh. It is mainly used in mini electronic products. . Such as flashlights, mini speakers, loudspeakers, etc. ◆14500 battery The 14500 battery is a lithium battery with a diameter of 14mm and a height of 50mm. This is also the size of the battery that we have always called the No. 5 battery. This battery is generally 3.7V or 3.2V, and the nominal capacity is relatively small. The 10440 battery is larger, generally 1600mAh, with superior discharge performance. The most important application field is consumer electronics, such as wireless audio, electric toys, and digital cameras. ◆16340 battery 16340 battery is a kind of lithium battery with a diameter of 16mm and a height of 34mm. Because the height of the ruler is a little shorter, and the capacity is not very small, it is used in strong light flashlights, LED flashlights, headlights, laser lights, Lighting fixtures and so on often appear. ◆18650 battery The 18650 battery is a lithium battery with a diameter of 18mm and a height of 65mm. Its biggest feature is that it has a very high energy density, almost reaching 170 watt-hours/kg. Therefore, this battery is a battery with better cost performance. Most of the batteries we usually see are this kind of batteries, because they are relatively mature lithium batteries, with good system quality stability in all aspects, and are widely used in applications with battery capacities of about 10 kWh, such as in mobile phones, laptops, etc. On small appliances. ◆21700 battery 21700 battery is a lithium battery with a diameter of 21mm and a height of 70mm. Because of its increased volume and space utilization, the energy density of the battery cell and the system can be improved, and its volumetric energy density is far greater. Higher than 18650 type batteries, widely used in digital, electric vehicles, balance vehicles, solar energy lithium battery street lights, LED lights, power tools, etc. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete.