In addition to 18650 batteries, there are also some cylindrical lithium batteries.
Lithium batteries are chemical batteries that have relatively high energy and strong adaptability to high and low temperatures. There are basically two types of lithium metal batteries and lithium-ion batteries. Its main characteristics are high energy density, high operating voltage, low self discharge rate, and cylindrical shape. Lithium ion batteries are usually represented by five digits. Starting from the left, one or two digits represent the battery diameter, the third and fourth digits represent the battery height, and the fifth digit represents the circle. Common 18650 cylindrical lithium-ion batteries and some cylindrical lithium-ion batteries? Below are several specifications of lithium batteries.
10440 battery
The 10440 battery is a lithium battery with a diameter of 10mm and a height of 44mm. Its size is the same as what we usually refer to as a "No. 7 battery". The capacity of this type of battery is usually very small, only a few hundred milliamps. It is mainly used for mini electronic products. For example, flashlights, mini stereos, speakers, 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 we have always referred to as the "No. 5 battery". The battery is typically 3.7V or 3.2V, with a relatively small nominal capacity of less than 10440. The battery is slightly larger, typically 1600mAh, and has excellent discharge performance. The main application areas are consumer electronics products, such as wireless audio, electric toys, and digital cameras.
16340 battery
The 16340 battery is a lithium battery with a diameter of 16mm and a height of 34mm. The height of the battery is relatively short and the capacity is not very small. Therefore, it is used for strong light flashlights, LED flashlights, headlights, laser lights, lighting fixtures, etc. It often appears.
18650 battery
The
18650 battery is a lithium battery with a diameter of 18mm and a height of 65mm. Its size has a high energy density, almost reaching 170 watt hours per unit, making it a more cost-effective battery. Most of the batteries we usually see are relatively mature lithium batteries. The quality of the system is more stable in all aspects. They are widely used with a battery capacity of about 10 kWh, for example, in small devices such as smartphones and laptops. .
21700 battery
The 21700 battery is a lithium battery with a diameter of 21mm and a height of 70mm. Due to its increased volume and larger space accumulation, it can improve the energy density of the battery and system. Its volumetric energy density is much higher than that of 18650 batteries. Widely used in digital, electric vehicles, balance cars, solar lithium battery street lights, LED lights, power tools, etc. The main manufacturers of such batteries include Tesla, Samsung, Panasonic, BYD, and Mengshi New Energy.
26650 battery
The 26650 battery is a lithium battery with a diameter of 26mm and a height of 65mm. It has a nominal voltage of 3.2V and a nominal capacity of 3200mAh. This battery has good capacity and high consistency. Replacing 18650 batteries has gradually become a trend. In terms of power batteries, many products will gradually favor this aspect.
32650 battery
The 32650 battery is a lithium battery with a diameter of 32mm and a height of 65mm. This battery has strong continuous discharge capability, making it more suitable for electric toys, backup power sources, UPS batteries, wind power generation systems, and wind solar complementary power generation systems.
In addition to these, there are also 18350, 26700, 32700, and so on.
