18650 Battery Manufacturer

With the rapid development of science and technology, there are more and more lithium battery products in our lives, and various battery accessories have emerged as the times require, such as power type, capacity type, etc., and their functional characteristics are indistinguishable for a while. As a leading manufacturer of 18650 batteries in China, most of the current lithium battery products use 18650 lithium batteries, and we are obliged to share more knowledge about 18650 lithium batteries.

The voltage of a normal battery is 3.6V to 4.2V. Why are there different voltages? In fact, the main reason is that the calculation methods are different. 3.6V refers to the normal discharge platform voltage during voltage use, or the typical voltage, while 4.2V is the fully charged voltage, so these two voltages are actually the same battery, and there is no difference.

18650 lithium batteries on the market are divided into capacity type and power type lithium batteries. The capacity type generally supports a low discharge rate, and is mainly used for lithium battery products with low power consumption such as power banks and flashlights that are often used in our daily life.

The power type, as the name suggests, will be more powerful, so it supports a higher discharge rate, which is used more in our daily household appliances, such as wireless vacuum cleaners, lithium electric drills, electric vehicles, etc. High power consumption Lithium battery products, etc.

18650 battery

What is the principle of 18650 battery combination

Considering the cost, first parallel and then series. For example, when making 12.6V, you can connect N 18650s in parallel, and three groups in series. Only one protection board is needed. May explode during discharge or charge. Sadly, this is the solution most lithium-ion vehicles use today.

From the safety point of view, first serial and then parallel, such as 12.6V, 3 series are used for one protection board, the superimposed capacity is the number of superimposed strings, and as many series, as there are as many protection boards, of course, there are 3S with as many A protections as one. plate. In this way, each series has overcurrent protection and charge equalization, and the probability of discharging or charging explosion is greatly reduced. In fact, the cost of the multi-series integrated protection board is not much higher, but the safety is greatly increased.

What is the capacity of 18650 lithium battery

The capacity of 18650 lithium battery is 1200-3600mAh, and the capacity of most 18650 lithium batteries on the market is 2950mAh, so it is also called 3000mAh battery. In the laboratory, the maximum 18650 lithium battery can reach more than 3500mAh, but in the current technology, 2200~2600mAh is still the most stable, so the higher the capacity, the better.

In theory, the bigger the better, but not in actual use. The reason is the limitation of technology. When the capacity is larger, the technical requirements are higher, and the technology is less mature, so the stability of the battery with a large capacity may become worse. If you choose a 18650 lithium-ion battery, it is generally better to choose a battery below 3000mAh, and do not blindly pursue high capacity.

18650 rechargeable battery

Top 10 brands of 18650 lithium batteries

  • CATL. Ningde Times New Energy Technology Co., Ltd. (CATL) was established in 2011 and the company is headquartered in Ningde, Fujian. The company is committed to providing efficient energy storage solutions for global green energy applications through advanced battery technology. The company has established complete R&D and manufacturing capabilities in the field of power and energy storage batteries, and has core technologies for the entire industry chain of materials, cells, battery systems, and battery recycling.

  • LC Chem. Among all battery manufacturers in the world, LG Chem’s batteries are a rapidly growing business field as a company with a chemical foundation. Since the early successful development of lithium-ion batteries in South Korea in 1999, it has maintained an average annual sales growth of more than 30%.

  • BYD. In the field of IT, BYD is mainly engaged in the business of rechargeable batteries, new energy vehicles, mobile phones, computer parts and their assembly, providing customers with “one-stop” services including design, manufacturing, testing and assembly. Major customers include Samsung , Apple, Nokia, HP, Toshiba, Huawei, Lenovo, HTC and other international electronic communication giants. BYD has grown into the most competitive EMS and ODM supplier in the IT industry.

  • Lishen. Founded in 1997, Tianjin Lishen is a joint-stock high-tech enterprise with independent intellectual property rights and core technologies, focusing on the technology research and development, production and operation of lithium-ion batteries. Now it has an annual production capacity of 500 million Ah lithium-ion batteries. The products include six series and hundreds of models of round, square, polymer batteries, power batteries, photovoltaics, and supercapacitors. The application range covers personal electronic consumer products, Power tools, transportation, and energy storage. Tianjin Lishen is a lithium-ion battery manufacturer with the largest investment scale and the highest technical level in China so far, and its market share ranks among the top five in the world, making it a representative brand of lithium batteries in China.

  • Gotion. Suppliers and service providers of battery materials and battery cell design processes, specializing in the research and development, production and operation of new lithium-ion batteries and their materials. Hefei Guoxuan Hi-Tech Power Energy Co., Ltd. was established in May 2006 and is located in Yaohai Industrial Park, Xinzhan District, Hefei City, with 1,500 employees. The company specializes in the research and development, production and operation of new lithium-ion batteries and their materials, and owns the intellectual property rights of core technologies. The main products are lithium iron phosphate materials, cells, power battery packs, BMS systems and energy storage battery packs.

  • BAK. Shenzhen BAK Battery Co., Ltd. is one of the top ten brands of lithium batteries and a famous brand product in Guangdong Province. It integrates lithium-ion batteries, electric vehicles, and battery recycling.

  • Desay. As one of the world’s leading manufacturers in the field of lithium battery power, the company’s small mobile power management system ranks first among domestic counterparts, serving the world’s top consumer electronics manufacturers; a number of technologies for electric vehicle power management systems have obtained national patents, and the products have been successfully used in the Beijing Olympics , Shanghai World Expo, Guangzhou Asian Games, Tianjin Davos Forum and other environmentally friendly electric buses; lithium battery power packaging integration business undertakes the follow-up battery packaging of the front-end power management system, and cooperates with internationally renowned battery manufacturers to provide packaging services for iPhone mobile phone batteries.

  • CALB. AVIC Lithium Battery (Luoyang) Co., Ltd., a subsidiary of China Aviation Industry Corporation, is a high-tech new energy enterprise specializing in R&D and production of lithium-ion power batteries and battery management systems.

  • Funeng. Funeng Group is a group company operating in accordance with the modern enterprise system, headquartered in Shanghai. The company’s operating industries involve new energy lithium batteries, solar photovoltaic distributed power stations, electric vehicles, automated machinery and equipment, food grain and oil, film and television media, import and export trade, etc. The predecessor started with traditional electronic products, established in 2002, and established a group company in 2013. The business involves many countries and regions around the world.

  • EVE. EVE Energy has always adhered to independent development and technological innovation. Currently, it has 59 national patents, of which 2 invention patents have won the “China Patent Excellence Award” awarded by the State Intellectual Property Office. The field of primary lithium batteries such as manganese oxide and lithium/iron disulfide has advantages in technology and production scale. The company’s main product, lithium/thionyl chloride batteries, has a leading share in the domestic market, and has become one of the world’s major suppliers of green and high-energy lithium batteries with international advanced technology. Products are widely used in global smart meters, automotive electronics, security, data communications and intelligent transportation and other fields.

Need Any Customized Lithium Battery?

Application of 18650 battery pack

BAK 18650 3050mAh 6.1A Battery

BAK 18650 3350mAh 6.5A Battery

BAK 18650 2500mAh 20A Battery

LG HG2 18650 3000mAh 20A Battery

LG 18650 HD2 2000mAh 25A Battery

LG Chem 18650 HE2 2500mAh Battery

Chinese 18650 Battery Cell List

ModelCapacity(mAh)Voltage(V)Diameter(mm)Height(mm)Weight(g)
EVE-ICR18650/20P20003.718.3565.0045
EVE-INR18650/25P25003.718.3565.0048
EVE-ICR18650/26V26003.718.3065.0548
EVE-INR18650/29V28503.718.3065.0044.5
Roofer-INR18650-2000A20003.718.1064.9046.5
Roofer-INR18650-2200A22003.718.465.145.7
Roofer-INC18650-2600A26003.718.465.145.7
BAK- 18650C422003.718.365.044.0
BAK-B18650CA22503.718.465.048.0
BAK-C18650CC26003.718.465.048.0
BAK-H18650CH26003.718.465.048.0
BAK-C18650CE30003.718 465 049 0
BAK-H18650CB20003.718.465.045.0
DMEGC-INR18650-20PA20003.718.665.545.0
DMEGC-INR18650-26E26003.718.2564.9547.0
DMEGC-INR18650-29E29003.718.2564.9547.0

Overseas 18650 Battery Cell List

ModelCapacity(mAh)Voltage(V)Diameter(mm)Height(mm)Weight(g)
Samsung-INR18650-20S20003.718.4365.0048.0
Samsung-INR18650-25R25003.718.3364.8545.0
Samsung-ICR18650-26J126003.718.4065.0045.0
Samsung-INR18650-30Q30003.718.3364.8548.0
Samsung-INR18650-35E33503.718.5565.2550.0
LG-18650 HE225003.718.365.048.0
LG-18650 HD220003.718.365.048.0
LG-INR18650 MH132003.718.3965.1549.0
LG-INR18650 HG230003.718.3965.1549.0
LG-LG18650 MJ135003.718.3965.1549.0
Panasonic-UR18650-NSX26003.718.5065.3045.8
Panasonic-NCR18650BE32003.718.5065.3047.5
Panasonic-NCR18650PF29003.718.5065.3046.5
Sony-US18650VTC420003.718.3565.2045.0
Sony-US18650V322503.718.2064.943.6
Sony-US18650VTC5A25003.718.3565.047.1
Sony-US18650VTC630003.718.5065.2046.6

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