18650 21700 32700 Cylindrical Cells - Liyue Lithium Batteries Solutions

A set of 3.7V 1.5Ah 18650 cylindrical battery cells

3.7V 2600mAh ICR 18650 cylindrical cells

PRODUCT FEATURES

Excellent Heat Dissipation: The cylindrical shape facilitates efficient heat dissipation within the battery, reducing the risk of overheating and thereby improving safety and longevity.
Stable Electrochemical Performance: Cylindrical batteries are known for their stable electrochemical performance, ensuring reliable operation over long-term use and charge-discharge cycles.
Versatility: Due to their design and shape, cylindrical batteries are easier to mass-produce and assemble, making them suitable for large-scale applications in tools, consumer electronics, and more.
Cost-Effectiveness: With mature manufacturing processes and high automation levels, cylindrical batteries often provide a cost-effective solution.

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Description

FAQs

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Description

A cylindrical lithium-ion battery is a type of rechargeable battery that has a cylindrical shape. These batteries consist of a cylindrical metal casing that houses the internal components, including the positive and negative electrodes, separator, and electrolyte. The most common type of cylindrical lithium-ion battery is the 18650 cell, named for its dimensions: 18 millimeters in diameter and 65 millimeters in length.

Cylindrical Cell Data Sheet:

Model	Capacity (mAh)	Size (Diameter * Length, mm)	Nominal Voltage (V)	Max Discharge Current (C)	Weight (g)	Cycle Life (at 25℃)
18650	2000 – 3500	18 * 65	3.7	1 – 20	38 – 50	500 – 1000 cycles
21700	4000 – 5000	21 * 70	3.7/3.2	1 – 3	60 – 70	1000 – 2000 cycles
26650	4000 – 6000	26 * 65	3.7/3.2	1 – 3	85 – 90	1000 – 2000 cycles
32700	5000 – 7000	32 * 65	3.7/3.2	1 – 3	110 – 120	1500 – 3000 cycles

Applications:

Cylindrical lithium battery is widely used in power tools, consumer electronics, electric bicycles, electric motorcycles, electric vehicles, solar street lights, medical equipment, drones, robots, etc. due to its high energy density, safety, cost-effectiveness and other characteristics.

Notice:

①All the cells are A-grade, totally, brand cell.

②Liyue is a direct seller of CATL, GreenBatt, EVE, GOTION, BTL and other batteries. We have fresh stock, ready for shipment. Support ODM&OEM, please contact the store customer service to provide customized requirements.

③Quality assurance, each cell will be inspected according to technical standards before shipment, and inspection data and reports will be issued.Click here to get quotation

FAQs

What’s the difference of pouch cell, round type and prismatic one?

Cylindrical cell: The world's earliest cylindrical lithium battery is invented by Japan SONY company in 1992 18650 lithium battery, because the invention has a long history, so the market penetration rate is very high, now there is a very mature production technology can ensure mass production and reduce the price, but a single capacity is small, is not suitable for large-capacity lithium battery design.

Prismatic cell: The shell is designed with the same steel shell or aluminum shell as the cylindrical cell, which has the advantage of being easy to pack, which is a compromise in the current market, because the manufacturing difficulty is not high, and the degree of automation is higher than that of the pouch cell, and it is easy to produce on a large scale to reduce the cost of industrial manufacturing and is favored by the market.

Pouch cell: The shell is encapsulated by an aluminum-plastic composite film, which has the characteristics of flexible, flat and bag-like design. This is the safest and highest energy density lithium battery to date. Pouch cells can be molded into a variety of shapes, making them highly adaptable to irregular spaces and unconventional designs.

The internal electrochemical principles of these three battery routes are the same, and the material composition is basically the same, but the packaging form and shape characteristics of the batteries are different, and the appropriate battery cells need to be selected according to the products of the final application.

How safe are Lithium-Ion Batteries?

Our LiFePO4 batteries have passed mandatory safety tests and have excellent chemical and mechanical structures. Safety performance tests include external short circuit tests, free fall, mechanical shock, high temperature, extrusion, overcharge, etc. The batteries do not catch fire or explode, greatly reducing the possibility of any harm. It is also worth mentioning that they are non-toxic, non-polluting, do not contain rare earth metals, and are environmentally conscious.