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By Limodish Energy | 02 October 2022 | 0 Comments | 511 Views

Rechargeable Lithium Battery Cell Types and Model Numbers in Different Size

With the development of lithium battery technology, there are more and more types of cylindrical lithium batteries. Cylindrical lithium-ion batteries are divided into lithium cobalt oxide, manganate, and ternary materials. The three material system batteries have different advantages. Let's look at the models and specifications of cylindrical lithium batteries. The pictures below show the sizes of the batteries compared with a 1 Euro coin.



Five-digit numbers usually represent cylindrical lithium-ion cells. From the left side, 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 represents a circle. There are many types of cylindrical lithium batteries; the more common ones are 10400, 14500, 16340, 18650, 21700, 26650, 32650, 38120, 41520, 4680, etc.
1. 10440 battery
The 10440 battery is a lithium-ion battery with a diameter of 10mm and a height of 44mm. It is the same size as the AA battery we often call it.
The capacity of this battery is generally tiny, only a few hundred mAh. It is mainly used in mini electronic products, such as flashlights, mini stereos, amplifiers, etc.


2. 14500 batteries
Larger. The 14500 battery is a lithium-ion battery with a diameter of 14mm and a height of 53mm. This is also the size of the battery we have always called the 5th battery. 
This battery is generally 3.7V or 3.2V, and its nominal capacity is relatively small, smaller than the 10440 battery. Generally, 1600mAh, with superior discharge performance, the most critical application field is consumer electronics, such as wireless audio, electric toys, digital cameras, etc.



3. 16340 battery
The 16340 battery is a lithium-ion battery with a diameter of 16mm and a height of 34mm. It is also called the RCR123A rechargeable version.  
Because of the shorter height of the ruler and the smaller capacity, it can be used in solid light flashlights, LED flashlights, headlights, laser lights, and lighting fixtures. etc., often appear.


4. 18650 battery
The 18650 battery is a lithium-ion battery with a diameter of 18mm and a height of 65mm. Its most significant feature is that it has a very high energy density, almost 170 Wh/kg, so this battery is cost-effective.
 
Most of the batteries that are often seen are this kind of battery because it is a relatively mature lithium-ion battery, and the system quality is stable in all aspects of the appliance.


5. 21700(2170) battery
The 21700 battery is a lithium-ion battery with a diameter of 21mm and a height of 70mm. Its volumetric energy density is much higher than the 18650 type battery and is widely used in digital, electric vehicles, balance cars, solar energy lithium-ion battery street lights, LED lights, power tools, etc. Because of its increased volume and space utilization, the battery cell's energy density can be improved more than other-size batteries. Manufacturers of this kind of battery mainly include Tesla, Samsung, Panasonic, BAK, and Dynavolt.


6. 26650(2665) battery
The 26650 battery is a lithium-ion battery with a diameter of 26mm and a height of 65mm. The nominal voltage is 3.2V, and the nominal capacity is 3200mAh.
This battery has excellent capacity and high consistency and has gradually become a trend to replace the 18650 battery. , In terms of power lithium batteries, many products will gradually favor this.



7. 32650(3265) battery

The 32650 battery is a lithium-ion battery with a diameter of 32mm and a height of 65mm. The nominal voltage is 3.2V or 3.7V, and the nominal capacity is 5000~7000mAh.


8. 38120(3812) battery

The 38120 battery is a lithium-ion battery with a diameter of 38mm and a height of 120mm. Each 38120 battery cell weighs 310~330gram. 
38120 battery includes 38120 Pro 8000mAh, fast charging performance, 38120 pro 3.2V 8AH, which can be 10C charge 10, can achieve 6-10 minutes fast charge, shorten charging time, maximum discharge current up to 25C. 38120N, and 38120S 10000mAh Rechargeable Lithium, designed for high power and daily charge and discharge application. Standard discharge current and continuous current.


9. 40152
 battery

The 40152 battery is a lithium-ion battery with a diameter of 40mm and a height of 152mm. Each 40152 battery cell weighs 460~485gram.40152 Rechargeable Lithium Ion Battery was designed for regular discharge and charge speed. With larger nominal capacities such as 15000mAh and 17000mAh.


10. 4680 battery
The 4680 battery is a lithium-ion battery with a diameter of 46mm and a height of 80mm. Each 4680 battery cell weighs about 355gram. Nominal capacities 8000m~12000Ah.




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