1. Cylindrical lithium-ion battery cell brands
Cylindrical lithium batteries are more popular in Japan and South Korea lithium battery enterprises, and there are considerable domestic enterprises in China producing cylindrical lithium batteries. The earliest cylindrical lithium battery was invented by the Japanese SONY company in 1992.
Well-known cylindrical lithium-ion battery brands: Sony, Panasonic, Sanyo, Samsung, LG, Wanxiang A123, BAK, Lixin, etc.
2. Types of cylindrical lithium-ion battery cells
Cylindrical lithium-ion cells are usually expressed in 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 indicates the round shape. There are many models of cylindrical Li-ion batteries, the more common ones are 10400, 14500, 16340, 18650, 21700, 26650, 32650, etc.
①10440 battery
10440 battery is a kind of lithium battery with a diameter of 10mm and a height of 44mm, which is the same size as what we often call “No.7 battery”, and the capacity of this kind of battery is generally very small, only a few hundred mAh, mainly used in mini electronic products. For example, torches, mini stereos, amplifiers, etc.
②14500 battery
14500 battery is a kind of lithium battery with a diameter of 14mm and a height of 50mm, this kind of battery is generally 3.7V or 3.2V, the nominal capacity is relatively small, a little larger than 10440 battery, generally 1600mAh, the discharge performance is superior, the application area is mainly in consumer electronics, such as wireless audio, electric toys, digital cameras, etc.
③16340 battery
The 16340 battery is a kind of lithium battery with a diameter of 16mm and a height of 34mm. This kind of battery is often found in strong torches, LED torches, headlamps, laser lights, lighting fixtures, etc. because the height of the feet is a little shorter and the capacity is not very small.
④18650 battery
18650 battery is a kind of 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 170Wh/kg, so this kind of battery is a better cost performance, we usually often see most of this kind of battery, because it is a more mature lithium battery, all aspects of the system quality stability is better, widely used in 10 kWh Around the battery capacity occasions, such as in, in mobile phones, laptops, and other small appliances.
⑤ 21700 battery
21700 battery is a kind of lithium battery with a diameter of 21mm and a height of 70mm, because its volume increases, the space utilization rate becomes larger, the energy density of the cell alone and the system can be improved, its volume energy density is much higher than that of 18650 type batteries, widely used in digital, electric vehicles, balance cars, solar energy lithium battery street lights, LED lights, power tools, etc.
⑥ 26650 Battery
26650 battery is a 26mm diameter, 65mm height lithium battery, nominal voltage 3.2V, nominal capacity 3200mAh, this battery with excellent capacity and high consistency and other characteristics, has gradually become a trend to replace the 18650 battery, many products in the power battery will also gradually favor this.
⑦ 32650 battery
32650 battery is a kind of lithium battery with a diameter of 32mm and a height of 65mm. This kind of battery has a strong capacity of continuous discharge, so it is more suitable for electric toys, backup power supply, ups battery, wind power generation system, and scenery complementary power generation system.