Cylinder Battery
Your Professional Cylinder Battery Supplier
Yiwu Ainengfa Technology Co., Ltd. is a national green energy enterprise, specializing in independent research and development, production and sales services of lithium-ion battery modules. The company consists of large number of experienced workers and multiple production equipment for lithium battery pack production, aging, and subassembly. At the same time, we have also built a large-scale battery testing center, whose advanced testing equipment is the core equipment used to develop safe batteries.
Why Choose Us
Rich experience
The company established in 2022, but started export business in 2005. Till now, our technical team has been developing lithium battery for more than 10 years, while the sales department exporting battery for over 15 years, lithium battery more than 6 years.
Production Market
Our products have been exported to many countries and have won widespread praise and trust from customers. We also have in-depth cooperation with large lithium battery enterprises such as Ningde times, BYD and GuoXuan high tech.
Wide product range
The company mainly produces lithium-ion batteries, including iron phosphate (LiFePO4/LFP) batteries, ternary lithium-ion battery packs (NMC) and LTO lithium batteries. We can also produce lithium batteries in various configurations on demand, providing customers with personalized options.
Leading service
We independently complete the R&D, production, marketing, sales, and technical support processes. Whether you want to buy battery cells of any shape or material, or battery packs of different structures and sizes, you just need to send your requirements via email and we can customize the product for you.

Appearance of cylindrical lithium battery
Cylindrical lithium batteries generally comprise positive electrode material (nickel cobalt oxide or zinc manganate), separator paper, and electrolyte. The casing of the cylindrical battery is made of aluminum-plastic composite pipe.
Cylindrical lithium battery capacity
The rated energy density of a single cylindrical lithium battery is between 300 and 500Wh/kg. Its specific power can reach more than 100W. According to different models and specifications of cylindrical batteries, the actual performance of this type of battery varies.
Safety and reliability of cylindrical lithium batteries
Cylindrical batteries have the characteristics of high safety and stability, resistance to overcharge, high temperature resistance, and long service life.
Cylindrical lithium battery application
Cylindrical lithium batteries can be used as power sources. In addition, they can also be seen in digital cameras, MP3 players, notebook computers, car starters, power tools, and other portable electronic products.
Types of Cylinder Battery
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 small, only a few hundred mAh. It is mainly used in mini electronic products. Such as flashlights, mini stereos, amplifiers, etc.
14500 batteries
The 14500 battery is a lithium-ion battery with a diameter of 14mm and a height of 50mm. 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, which is smaller than that of the 10440 battery. Larger, generally 1600mAh, with superior discharge performance, the most important application field is consumer electronics, such as wireless audio, electric toys, digital cameras, etc.
16340 battery
The 16340 battery is a lithium-ion 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. often appear.
18650 battery
The 18650 battery is a lithium-ion 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, so this battery is a cost-effective battery.
21700 battery
The 21700 battery is a lithium-ion battery with a diameter of 21mm and a height of 70mm. Because of its increased volume and increased 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 battery is widely used in digital, electric vehicles, balance cars, solar energy lithium-ion battery street lights, LED lights, power tools, etc. Manufacturers of this kind of battery mainly include Tesla, Samsung, Panasonic, BAK, and Dynavolt.
Specification
|
ITEM |
DESCRIPTION |
|
Material |
38120 3.2v 8000mAh |
|
Battery Model |
LifePo4 Lithium Iron Battery |
|
Volt |
2.5v-3.65v |
|
Capacity |
4000mAh |
|
Size |
Diameter:38mm High:132mm |
|
Weight |
300g±5g |
|
Cycle Life |
4000 cycle(100% DOD,1C/1C) |
|
Application |
Car starting battery,Home Appliances, Consumer Electronics, BOATS, Golf Carts,etc |
A general cylindrical lithium-ion battery consists of a casing, a cap, a positive electrode, a negative electrode, a separator, and an electrolyte. Generally speaking, the casing of a cylindrical battery is the battery’s negative electrode, and the cap is the battery’s positive electrode. The battery casing is made of nickel-plated steel plate.
The critical difference between power cylindrical batteries and ordinary cylindrical batteries lies in the conductive connection structure of the battery. A special high-current structure design is required because the general application current of power lithium batteries is relatively large.

Application of Cylinder Battery
Electric Vehicles
Cylindrical cells, such as the 4680 format, are widely used in electric vehicles for their high discharge rates and scalability.
01
Energy Storage Systems
Grid-scale storage systems benefit from the durability and modularity of cylindrical cells.
02
Consumer Electronics
Devices like laptops and power banks rely on cylindrical cells for their compact size and reliability.
03
Industrial Applications
Cylindrical cells withstand mechanical stress, making them ideal for industrial tools and robotics.
04
Medical Devices
Their safety features and long lifespan ensure dependable performance in critical medical applications.
05
FAQ
As one of the most professional cylinder battery manufacturers in China, we're featured by quality products and good service. Please rest assured to buy customized cylinder battery at competitive price from our factory. For more information, contact us now.
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