Cylindrical lithium-ion batteries are usually represented by five digits. From the left, the first and second digits refer to the battery diameter, the third and fourth digits refer to the battery height, and the fifth digit refers to the circle. There are many kinds of cylindrical batteries, such as 10400, 14500, 16340, 18650, 2 1700, 26650, 32650, etc.
1, 10440 battery
10440 battery is a lithium-ion battery, with a diameter of 10mm and a height of 44mm, which is the same size as the battery No.7 that we often say. Battery capacity is generally very small, only a few hundred mAh, and it is important to use it in mini electronic products. Such as flashlights, micro-speakers, loudspeakers and the like.
2. 14500 battery
14500 battery is a lithium-ion battery, with a diameter of 14mm and a height of 50mm, which is also the size we always call the No.5 battery. This kind of battery is usually 3.7V or 3.2V, and its nominal capacity is relatively small, a little larger than that of 10440 battery, which is generally 1600mAh, and its discharge performance is superior.
3. 16340 battery
16340 battery is a kind of lithium-ion battery, with a diameter of 16mm and a height of 34 mm. Due to its short height and small capacity, this battery often appears in high-light flashlights, LED flashlights, headlights, laser lights and lighting lamps.
4. 18650 battery
18650 battery is a kind of lithium-ion battery with a diameter of 18mm and a height of 65 mm Its biggest feature is that its energy density is very high, almost reaching 170 WHr/kg, so it is a battery with good cost performance. Usually, most of the batteries we often see are of this kind, because they are relatively mature lithium-ion batteries, and the quality and stability of all aspects of the system are very good.
5.2 1700 battery
2 1700 battery is a lithium-ion battery with a diameter of 2 1mm and a height of 70 mm. Due to the increase of its volume and the improvement of space utilization, the energy density of battery cells and systems can be improved. Its volume energy density is much higher than that of 18650 battery, and it is widely used in digital, electric vehicles, balance vehicles, solar lithium-ion battery street lamps, LED lamps and electric vehicles. Important manufacturers of this battery include Tesla, Samsung, Panasonic, BIC, Lion New Energy and so on.
6,26650 battery
The 26650 battery is a lithium-ion battery with a diameter of 26mm and a height of 65mm, a nominal voltage of 3.2V and a nominal capacity of 3200mAh. This kind of battery has the characteristics of excellent capacity and high consistency, and gradually becomes the trend of replacing 18650 battery, and many products will gradually favor it in power lithium batteries.
Published in July 2022-13 1 1: 53.
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