Cylindrical Li-ion Cell

Cylindrical lithium ion battery cells are cells enclosed in a cylinder-shaped
case, it has an excellent energy density and the high voltage ensures more
power to provide in limited space. Because of small and round size, it's
convenient to assembly them in different combinations. For Li-ion cylindrical
rechargeable batteries, the standard formats are 18650, 26650, 21700 and 32700,
they are named by the diameter and height. Lifepo4 cylindrical cells are
commonly used in smart appliance, e-bikes, medical devices, and energy storage
systems.

Types of lithium battery cylindrical
18650 Lithium Battery
Capacity from 2200mAh to 3500mAh

UL, CB, PSE, IEC, BIS, BSMI, CQC certified

Long cycle life over 1000 times

18650 Lithium Battery
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21700 Lithium Battery
Density reaches 251 Wh/kg

Trendy updated choice for Ebikes

Forthcoming 21700 6.0Ah Battery

21700 Lithium Battery
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26650 Lithium Battery
Longer lifespan up to 3000 times

LFMP and NCM material for choose

High consistency with record high good feedback

26650 Lithium Battery
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32140 LiFePO4 Battery
Energy density ~180Wh/kg in safe LFP material

Internal resistance<1.8mΩ

-20℃ discharge>70%

5000+ cycles

32140 LiFePO4 Battery
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40135 LiFePO4 Battery
Capable of maximum 40A continuous discharge

Up to 8A charging

Excellent performance in extrem conditions

40135 LiFePO4 Battery
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4680 Battery
Ultra high rate and ultra strong heat dissipation

Semi-solid system to ensure intrinsic safety

Cell energy density>300Wh/kg

4680 Battery
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Structure of Cylindrical Lithium Ion Battery
A cylindrical cell is made of anodes, separators, and cathodes that are winding
in a cylinder-shaped case. The anode electrode is made of copper foil with
graphite, and the cathode is a ternary materials coating on Al foil. To avoid
contamination between the two parts, the anodes and cathodes are usually
processed in different rooms. When the electrodes have been prepared, they
would be assembled in winding machine where separator is layered between the
anode and the cathode to form the internal structure of the cell.

How Are Cylindrical Cells Manufactured?
The production processes of lifepo4 cylindrical mainly include mixing, coating,
drying, calendering, slitting, winding, welding, electrolyte injection, sealing
and testing. Each process needs to be controlled in specific temperature and
humidity. For the reliability of lithium phosphate battery cells, CHAM, a
professional lithium battery manufacturer, conducts 100% X-Ray inspection to
ensure internal winding alignment &safe battery structure. In lfp cylindrical
cells manufacturing process, highly automated equipment and advanced technology
are critical, will have a positive impact on production costs, reducing the
cost of on both raw material and final battery cell.

Prismatic VS Cylindrical Lithium Ion Battery
Lithium cylindrical cells, with the cylindrical shape and construction, were
one of the first mass-produced battery in the world and are dominant in some
applications. Prismatic cell batteries, on the other hand, are popular because
of their long life span, thin shape, and efficient use of space.

Lifepo4 cylindrical batteries are convenient because of their variety of
combinations to needed power and battery space. For LFP Prismatic Cells, they
are safer than cylindrical lithium-ion batteries by the nature of LPE material.


There are many lithium battery manufacturing companies, but we are one of the
best choices for you.

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