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What are the specifications and dimensions of cylindrical lithium-ion batteries?

by:dcfpower     2021-03-12

The size of cylindrical lithium-ion batteries is usually represented by five digits. Counting from the left, the first and second digits refer to the diameter of the battery, the third and fourth digits refer to the height of the battery, and the fifth digit refers to the circle. shape. There are many types of cylindrical lithium-ion batteries, the more common ones are 10400, 14500, 16340, 18650, 21700, 26650, 32650 and so on.

①10440 battery

The 10440 battery is a lithium battery with a diameter of 10mm and a height of 44mm. The size of this battery is generally small, only a few hundred mAh, and it is mainly used in mini electronic products. Such as flashlights, mini speakers, loudspeakers, etc.

②14500 battery

14500 battery is a lithium battery with a diameter of 14mm and a height of 50mm. This kind of battery is generally 3.7V or 3.2V, and the nominal capacity is relatively small. The 10440 battery is a bit larger, generally 1600mAh, with superior discharge performance. The main application areas are consumer electronics, such as wireless audio, electric toys, and digital cameras.

③16340 battery

The 16340 battery is a lithium battery with a diameter of 16mm and a height of 34mm. This kind of battery is a little shorter in height and its capacity is not very small. Strong light flashlights, LED flashlights, headlights, laser lights, lighting fixtures, etc. often appear.

④18650 battery

The 18650 battery is a lithium battery with a diameter of 18mm and a height of 65mm. Its biggest feature is its very high energy density, almost reaching 170 Wh/ Kg, so this kind of battery is a better cost-effective battery, we usually see this kind of battery, because it is a relatively mature lithium battery, the system quality stability is good in all aspects, widely applicable to about 10 kWh Battery capacity occasions, such as in mobile phones, notebook computers and other small appliances.

⑤21700 battery

The 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 battery cell and The energy density of the system can be improved, and its volumetric energy density is much higher than that of the 18650 battery, which is widely used in digital, electric vehicles, balance vehicles, solar energy lithium battery street lights, LED lights, power tools, etc.

⑥26650 battery

The 26650 battery is a lithium battery pack with a diameter of 26mm and a height of 65mm. The nominal voltage is 3.2V and the nominal capacity is 3200mAh. This kind of battery has excellent Its capacity and high consistency have gradually become a trend to replace 18650 batteries, and many products in power batteries will gradually favor this.

⑦32650 battery

32650 battery is a lithium battery with a diameter of 32mm and a height of 65mm. This battery has a strong continuous discharge capacity, so it is more suitable for electric toys and backup Power supply, UPS battery, wind power generation system, wind and solar hybrid power generation system.


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