What are the similar 18650 cylindrical lithium batteries?
Lithium battery is a chemical battery with relatively high energy and strong adaptability to high and low temperature. Basically, there are two categories of lithium metal battery and lithium ion. Its main features are high energy density, high working voltage, low self-discharge rate, No memory effect. Among them, the low self-discharge rate is the most prominent advantage of lithium batteries.
Cylindrical lithium-ion battery cells are usually represented by five digits. Counting from the left, the first and second digits refer to the diameter of the cell body, the third and fourth digits refer to the height of the battery, and the fifth digit represents a circle, then In addition to our common 18650 cylindrical lithium-ion batteries, what other cylindrical lithium-ion batteries are there?
1. 10440 battery
The 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 "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 stereos, amplifiers, etc.
2. 14500 batteries
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 we have always called "No. 5 battery". This battery is generally 3.7V or 3.2V, and its nominal capacity is relatively small. The battery is larger, generally 1600mAh, with superior discharge performance. The main application field is consumer electronics, such as wireless audio, electric toys, digital cameras, etc.
3. 16340 battery
The 16340 battery is a lithium battery with a diameter of 16mm and a height of 34mm. Because of the shorter height of the ruler and the smaller capacity, it can be used in strong light flashlights, LED flashlights, headlights, laser lights, lighting fixtures, etc. occur frequently.
4. 21700 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 energy density of the battery cell and the system can be improved. Its volumetric energy density is much higher than that of the 18650 battery. It is widely used in digital, electric vehicles, balance vehicles, solar energy lithium battery street lights, LED lights, power tools, etc. Manufacturers of such batteries mainly include Tesla, Samsung, Panasonic, BAK, and Dynavolt.
5. 26650 battery
The 26650 battery is a lithium battery with a diameter of 26mm and a height of 65mm, with a nominal voltage of 3.2V and a nominal capacity of 3200mAh. This battery has the characteristics of excellent capacity and high consistency, and has gradually become a trend to replace the 18650 battery. In terms of power batteries, many products will gradually favor this.
The 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, backup power supplies, UPS batteries, wind power generation systems, and wind-solar hybrid power generation systems.
The above is all lithium battery knowledge sharing except 18650 cylindrical lithium battery.