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 battery height, and the fifth digit refers to the circle. In addition to our common 18650 cylindrical lithium-ion battery, what other cylindrical specifications of lithium batteries are there? Here are several specifications of lithium batteries.

1.10440

The 10440 battery is a lithium battery with a diameter of 10mm and a height of 44mm. The battery capacity is generally small, only a few hundred mAh. It is mainly used in mini electronic products.

2.14500

The 14500 battery is a lithium battery with a diameter of 14mm and a height of 50mm. This battery is generally 3.7V or 3.2V, 1600mAh, with superior discharge performance. The main application areas are consumer electronics, such as wireless audio, electric toys, and digital cameras.

3.16340

The 16340 battery is a lithium battery with a diameter of 16mm and a height of 34mm. This battery has a shorter foot height and a small capacity, so it is used in strong light flashlights, LED flashlights, headlights, laser lights, lighting fixtures, etc.

4.18650

The 18650 battery is a 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 170 Wh/kg. Therefore, this battery is a relatively cost-effective battery. We usually Most of the batteries I see are this kind of batteries, because they are relatively mature lithium batteries, with good system quality and stability in all aspects, and are widely used in applications with battery capacities of about 10 kWh, such as in mobile phones, laptops and other small appliances .

5.21700

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, and its volumetric energy density is much higher than 18650 Type batteries are widely used in digital, electric vehicles, balance vehicles, solar energy lithium battery street lights, LED lights, power tools, etc.

6.26650

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 excellent capacity and high consistency and has gradually become a trend to replace the 18650 battery. Many products in power batteries will gradually favor this.

7.32650

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 and solar hybrid power generation systems.

In addition to these there are 10400，18350, 26700, 32700, etc.

ACEY New energy has different kinds of machine for cylindrical battery research or battery pack assembled，they are suitable for all kinds of battery type. Welcome to inquiry.