Preface
In recent years, energy storage has become a development issue in the field of new energy. In order to increase the energy density of battery packs and reduce the number of batteries in the battery pack, many new energy companies have launched 21700 model lithium-ion power batteries with larger capacity. The first batch of 21700 batteries produced in China has a cell capacity of 4000-4500mAh and is specially developed for new energy products.
Large-scale replacement of 21700 batteries by new energy is one of the ways to upgrade the energy density of new energy products, and upgrading from 18650 batteries to 21700 batteries is the development trend of power batteries. For example, Tesla and Panasonic cooperated in the MODEL series of models A large-capacity 21700 cylindrical battery is introduced to improve the cruising range.
21700 battery core science
The size of the 21700 lithium battery is 21mm in diameter, 70mm in length, weighs about 68g, and has a capacity of 4000mAh to 5000mAh. It is the latest cylindrical lithium battery standard developed by Tesla Motors of the United States and Panasonic of Japan. This type can achieve the best balance between volume and capacity to replace the old 18650 battery.
The 21700 battery cell is a high-energy storage power battery cell with a high discharge rate and can be discharged instantly. It is often used in high-frequency power tools such as electric vehicles and electric drills. Compared with the 18650 battery cell, the 21700 battery cell does not have an increase in energy due to volume. , but by reducing the cobalt content and increasing the nickel content to effectively increase the battery energy. Because the metallic properties of nickel are relatively active, increasing the nickel content can greatly increase the energy density, so that the endurance will be improved when forming a battery pack. In addition to 18650 and 21700 batteries, there are also 4680 batteries with larger volume and energy storage.
What 21700 batteries are currently available?
This time, Charging Head Network aims to share the 21700 battery cells encountered in the process of contacting energy storage products, and share its various product consultation and specification information about 21700 battery cells. This case sharing includes BAK, Yiwei, and Penghui. , LG, Samsung, Lishen, Yintian, Panasonic and other well-known brands of 21700 batteries.
The above order is in no particular order.
BAK N21700CG-50
As one of the pioneers in the field of cylindrical lithium batteries in China, BAK has been deeply involved in power batteries for many years. Relying on more than 20 years of technology accumulation and product development experience, BAK independently develops electrolytes that improve high-activity interfaces, thereby achieving high energy density of battery products. , long cycle, high magnification and high safety, it has won the trust of many customers and promoted the technological breakthrough and market prosperity of power batteries. BAK is currently developing the 21700 full-pole battery cell for small power fields and hopes to use the 21700 cylindrical battery Battery performance has reached a new level.
The rated capacity of a single BAK 21700 battery cell is 5000mAh, and five cells can be connected in series to form a capacity of 25000mAh. The 21700 battery cell has a cycle life of 800 times, which is 2.6 times that of the ordinary national standard GB/T35590.
BAK N21700CK-55E
BAK N21700CK-55E adopts a high nickel + silicon anode system, with a Ni (nickel) content of up to 90%. The anode material uses high-efficiency silicon, which achieves a matching of positive and negative electrode efficiencies. The price/performance ratio is once again improved, and can achieve -20℃~ The +70°C wide temperature range discharge meets the needs of normal use in extreme environments. It has also passed rigorous performance tests such as overcharge, over-discharge, short circuit, drop, heating, vibration, and extrusion, and has high safety and reliability. Coupled with the long life of 1,000 cycles of full charge and discharge cycles and 600 cycles of fast charge cycles, it is suitable for multiple application scenarios with high capacity requirements and will further enhance market applications and terminal experience.
INR21700-3000mAh
Canhui INR21700-3000mAh battery cell, rated voltage 3.7V, single cell capacity 3000mAh, internal resistance ≤40mΩ, continuous large discharge current up to 4.5A, cycle life: 0.5C charge 1.5C capacity ≥80 after 200 cycles %, weight: 66.8±1g; suitable for applications in lighting products, power banks, mobile power supplies, backup power supplies, computers, mobile devices, bicycles and other fields.
INR21700-3350mAh
Canhui INR21700-3350mAh battery cell, rated voltage 3.7V, single cell capacity 3350mAh, internal resistance ≤40mΩ, continuous large discharge current up to 5A, cycle life: 0.5C charge 1.5C capacity ≥80% after 300 cycles , Weight: 67±1g.
INR21700-4000mAh
Canhui INR21700-4000mAh battery cell, rated voltage 3.7V, single cell capacity 4000mAh, internal resistance ≤40mΩ, continuous large discharge current up to 6A, cycle life: 0.5C charge 1.5C capacity ≥80% after 300 cycles , Weight: 67.8±1g.
INR21700-4300mAh
Canhui INR21700-4300mAh battery cell, rated voltage 3.7V, single cell capacity 4300mAh, internal resistance ≤40mΩ, continuous large discharge current up to 6.45A, cycle life: 0.5C charge 1.5C capacity ≥80 after 300 cycles %, weight: 68.9±1g.
INR21700-4500mAh
Canhui INR21700-4500mAh battery cell, rated voltage 3.7V, single cell capacity 4500mAh, internal resistance ≤40mΩ, continuous large discharge current up to 6.75A, cycle life: 0.5C charge 1.5C capacity ≥80 after 500 cycles %, weight: 69.7±1g.
INR21700-4600mAh
Canhui INR21700-4600mAh battery cell, rated voltage 3.7V, single cell capacity 4600mAh, internal resistance ≤40mΩ, continuous large discharge current up to 6.9A, cycle life: 0.5C charge 1.5C capacity ≥80 after 500 cycles %, weight: 69.8±1g.
EVE
EVE 21700 5000mAh battery cell
Founded in 2001, EVE Lithium Energy is an old brand in the battery field. It has core technologies and comprehensive solutions for consumer batteries and power batteries. Its products are widely used in power tools, small household appliances, mobile power supplies, outdoor power supplies, two-wheeled electric vehicles, New energy vehicles and other different fields.
EVE Lithium Energy 50E 21700 lithium-ion battery has a single cell capacity of 5000mAh and supports up to 1C charging and 3C discharging. It is an energy storage high-energy density battery cell and can be packaged into battery packs of different specifications. While reducing the number of packaged cells, it also significantly reduces the overall cost of the battery pack, with superior performance in all aspects.
EVE Lithium Energy 50E 21700 lithium ion battery cell is coded INR21700/50E, the material formula is ternary lithium, the capacity reaches 5000mAh, the minimum capacity is 4900mAh, this is a high-density “golden” capacity level, the charge and discharge range is 4.20V – 2.50V, typical voltage value is 3.65V, single cell power storage is about 18.25Wh. . For example, when used in the field of mobile power supply, only two/four cells can be used to form a capacity of 10000mAh or 20000mAh. Compared with low-capacity cells, the number of cells and the size of the entire product can be greatly reduced with the same amount of electricity.
FESC Far East Battery
Far East Battery 21700-6000mAh battery cell
Previously, the capacity of 21700 battery cells was limited to 5000mAh. Two 21700 battery cells can be used to form a 10000mAh mobile power supply, replacing the original three or even four 18650 battery power banks, making the product smaller and with a better experience.
Far East Battery has broken the boundaries of the industry, pushing the ceiling of 21700 battery cell capacity from 5000mAh to an astonishing 6000mAh, and increasing the energy density by 20%. The capacity of 21700 cylindrical steel shell battery cells has been maintained at 5000mAh. For many years, lithium-ion battery technology has been considered in the industry When it has reached the bottleneck, Far East has launched the 21700 battery cell with a capacity of up to 6000mAh. It is shocking and exciting at the same time. It means that the stagnant lithium-ion battery cell technology has once again been innovated and can continue to attack high capacity.
Detailed information and specifications of Far East FEB 21700-6000mAh battery cell
Far East Battery 21700-5500mAh battery cell
The Far East FEB 21700-5500mAh battery cell is still cylindrical in design, with a blue battery cover color design that can be customized. The side of the battery cover has the battery code “21700-5500mAh 3.6V/4.2V 19.8Wh” and “+”, “-” mark the positive and negative poles. Rated capacity: 5500mAh@0.2C; nominal voltage: 3.6V; nominal energy: 19.8Wh; cycle life: +0.5C/-1C, 4.2-2.75V 70%@600; AC internal resistance: ≤25mΩ.
GREAT POWER Penghui
Penghui Energy’s 21700 batteries have been in mass production for many years. The first batch of 21700 batteries launched had a capacity of 4600mAh (there is also a 4800mAh version).
Taking the traditional 10000mAh power bank as an example, two Penghui 21700 batteries can be combined to form 9200mAh; for USB PD power bank, six Penghui 21700 batteries can be combined to form 27600mAh, and support high-rate charging and discharging. This type of 21700 specification battery cell was first seen in Tesla cars. Because of its high energy density and large effective space, it has become a new standard in the electric vehicle industry. This kind of battery cell can be used not only in electric vehicles, but also in consumer-grade power banks, flashlights, Bluetooth speakers, etc.
LG New Energy
LG INR21700M50T
LG’s 21700 new energy battery model is INR21700M50T GS125E055A1. This string of codes indicates that the battery is 21mm in diameter, 70mm in length, and has a single cell capacity of 5000mAh. There is a warning printed on one end of the battery cell. The battery is for OEM use only, not for consumer use. If you see this label, do not use this battery. There is more information on the LG Chemical website.
LG lithium batteries have advantages in battery materials, because LG’s materials are usually produced in-house or developed in cooperation with material companies. Since LG has developed the chemical industry, LG’s materials for the 21700 battery are of higher quality. The all-steel shell eliminates the risk of short circuit caused by collision and impact. LG batteries have stable performance and low internal resistance. They are often used in lighting, model aircraft, remote control cars, power banks, backup power supplies, battery packs, etc.
LG INR21700M50LT
LG INR21700M50LT has a diameter of 21mm, a length of 70mm, a capacity of 5000mAh, supports up to 3C discharge, a voltage equalization of 3.69V, and a charging cut-off voltage of 4.2V. The INR21700M50LT is an upgraded version of the INR21700M50T, with more stable performance and support for higher discharge rates.
LISHEN
Tianjin Lishen Battery Co., Ltd. is a state-controlled national high-tech enterprise. It is the first lithium-ion battery R&D and manufacturing enterprise in China and has 25 years of lithium-ion battery R&D and manufacturing experience. It has the only national lithium-ion power battery engineering technology research center in the domestic lithium battery industry, the first UL witness testing laboratory in the domestic battery industry, and a nationally recognized enterprise technology center.
LS Lishen LR2170LA power battery has a capacity of 4000mAh, supports 6A charging current, 35A discharging current, voltage equalization is 3.65V, and charging limit voltage is 4.2V.
Panasonic
Panasonic is a large Japanese electrical appliance manufacturing company headquartered in Osaka. Its business covers automotive and industrial systems, home appliances, ecosystem solutions, digital products and other fields. Panasonic has been deeply involved in the battery field for many years. Its product lines cover dry batteries for various purposes, valve-regulated lead-acid batteries for communications and automobiles, nickel-cadmium and nickel-metal hydride batteries for power tools, consumer lithium batteries, and lithium batteries for electric vehicles and energy storage.
Tesla and Panasonic jointly developed a new cylindrical battery, the 21700 cylindrical battery used on Model 3, with an internal resistance of 13 milliohms and a discharge current of 10A continuously and 15-20A instantaneously. Compared with the 18650 battery, the 21700 battery is larger in size. After being grouped, it is easier to control due to the reduced number of cells, and the single energy density is increased to 340Wh/kg. The 21700 is currently in mass production at the Gigafactory in Nevada.
SAMSUNG
Samsung INR21700-50S
South Korea’s Samsung 21700 lithium-ion battery models include INR21700-50S, INR21700-50E, INR21700-40T, and INR21700-48G. The ambient temperature requirement for long-term storage of Samsung 21700 lithium battery is -20~50°C. There are precautions printed on the battery. There is a fire hazard. It cannot be used for e-cigarettes. It is prohibited to install, carry or hold it.
Samsung 21700-50s lithium-ion battery, weighing about 70g, rated voltage 3.6V, single cell capacity 5000mAh, internal resistance 11.5mΩ±5, continuous large discharge current up to 30A, operating temperature -20°C~45°C , using LSD smart power lock technology, it can still retain about 85% of the power after one year of storage, effectively reducing power loss, and is suitable for use in sweeping robots, electric bicycles, drones, solar energy storage and other fields.
Samsung INR21700-50E
Samsung 21700-50E lithium-ion battery, rated voltage 3.7V, single cell capacity 5000mAh, minimum capacity 4950mAh, internal resistance 13.5mΩ, continuous large discharge current up to 10A (in a temperature environment of 0 to 40 degrees), charging The working temperature is 10°C~45°C, and the discharge working temperature is -20°C~60°C. 5000mAh large capacity. As a power type 21700 lithium battery, it has a larger capacity and can be discharged at a high rate; suitable for electric vehicles, lighting products, Charging and discharging standards for power banks, mobile power supplies, backup power supplies, computers, mobile devices, automobiles, bicycles and other fields: more than 1,000 times, charging cut-off voltage 4.2V, discharge cut-off voltage 2.5V.
Samsung’s third 21700 lithium-ion battery model is INR21700-48G lithium battery, with a rated capacity of 4800mAh, a minimum capacity of 4700mAh, a voltage of 3.6V, an energy density of 17.4Wh, a maximum charge cut-off current of 96mA, a maximum discharge current of 9.6A, and a weight of Within 69g.
Samsung NR21700-48G
Samsung INR21700-48G has a capacity of 4800mAh, a maximum charging current of 4.8A, and a maximum discharge current of 35A.
Samsung INR21700-40T
Samsung INR21700-40T, 21700 size, 4000mAh capacity, 3.6V, charging limit voltage 4.2V, supports 45A discharge current.
SILVER SKY
Yintian has a large-scale lithium battery production base integrating R&D, design, production and sales, 4 high-end automated battery production lines and a daily production capacity of 360,000 cells. The products are mainly 18650 series and 21700 series, which are widely used in electric bicycles, power tools, smart homes, portable energy storage, etc. It can provide overall solutions and product manufacturing from battery cells to systems, helping companies create their own green new energy products.
Based on the market demand for personalized power banks, Yintian has developed Yintian New Energy 21700 product series with different capacity models, including the cost-effective new model E5000. Isolated by a layer of diaphragm, the positive electrode is equipped with a high-quality top cover, safety valve, insulating surface pad, CID and positive electrode lug. This model has a capacity of 5000mAh, a power supply of 3.7V, and a battery density of 18.5Wh. Its small size and large capacity will help the personalized power bank market prosper.
Yintian New Energy INR21700E5500
Yintian New Energy’s INR21700E5500 battery cell is a cylindrical design with a blue battery core film color. The cell capacity is 5500mAh@0.2C, the nominal voltage: 3.7V, the nominal energy: 20.35Wh, and the maximum continuous discharge current is 2C. It is suitable for In the fields of electric vehicles, lighting products, mobile energy storage equipment, power tools, etc., the charging cut-off voltage is 4.2V and the discharge cut-off voltage is 2.5V.
SunPower
SunPower 5000mAh 21700 battery cell
Changhong SunPower is a global professional cylindrical power lithium-ion battery manufacturer, focusing on the R&D, production and sales of high-rate 18650 and 21700 lithium-ion batteries and battery packs. Committed to providing professional power battery solutions to our customers. Products are widely used in power tools, garden tools, vacuum cleaners, small household appliances, model aircraft, electric bicycles and other fields. The company’s positioning is aligned with Japanese and Korean international brands, and its products are exported to all over the world.
The battery cell specification is 21700, the brand is SunPower (Changhong SunPower New Energy), the model is INR21700-5000, the capacity is 5000mAh, the discharge platform is 3.6V, the production batch is 050423INR21700-5000, the single cell capacity reaches 5000mAh, it is a high energy density The cylindrical lithium-ion battery cell allows customers to easily build products that are smaller in size while maintaining high capacity.
SVOLT
LXR 21700-5000
SVOLT Energy LXR 21700 battery cell, single cell capacity 4900mAh, high nickel silicon-based battery type, internal resistance ≤20mΩ, continuous large discharge current up to 15A (in a temperature environment of 25 degrees), charging operating temperature is 0 °C~45°C, discharge working temperature is -20°C~60°C, large capacity of 4900mAh, as a power type 21700 lithium battery, it has a larger capacity and can be discharged at a high rate; suitable for two-wheeled vehicles, low-speed vehicles, electric vehicles For applications in automobiles and other fields, the charging cut-off voltage is 4.2V and the discharge cut-off voltage is 2.75V.
LXR 21700-4200
SVOLT Energy’s second battery cell has a single capacity of 4200mAh. The battery type is a ternary lithium power battery. The internal resistance is also ≤20mΩ. The continuous large discharge current can reach 12.6A (in a temperature environment of 25 degrees). Charging works The temperature is 0°C~45°C, the discharge operating temperature is -20°C~60°C, and it has a large capacity of 4900mAh. As a power type 21700 lithium battery, it has a larger capacity and can be discharged at a high rate; suitable for two-wheeled vehicles and low-speed For applications in automobiles, electric vehicles and other fields, the charging cut-off voltage is 4.2V and the discharge cut-off voltage is 2.75V.
WRD
WRD ICR21700DA
The exterior of the WRD ICR21700DA battery cell is designed with a steel casing and a blue battery cover color. Rated capacity: 4000mAh@0.2C; nominal voltage: 3.6V; nominal energy: 14.40Wh; AC internal resistance: 20±5mΩ. The weight of the battery core is approximately 66.7g. In addition, Walton has a complete automated production line and conducts strict safety tests on the battery cores such as short circuit, overcharge, impact and extrusion, which can fully ensure the safety of consumers.
Other Brands
In addition to the above mainstream battery cells, there are also some common battery cell models included in other articles and disassembly of the charging head network. Through the articles, you can check the application of other 21700 batteries and understand the high consistency and high consistency of the 21700 power battery cells. High safety and high cycle life.
For more information, pls. contact at “maria.tian@keliyuanpower.com”.
Post time: Jan-27-2024