Cylindrical cells
Product definition and technical features
Cylindrical cells are a type of lithium battery cell known for their robust structure, standardized size, and high manufacturing consistency. These cells feature a rolled electrode design housed in a metal casing, providing excellent mechanical stability and thermal control. Common formats include 18650, 21700, 26650, and 32700, with each number representing the cell’s diameter and length in millimeters. As a leading cylindrical cell manufacturer, Large Power supplies a wide range of cylindrical lithium-ion and LiFePO4 cells suitable for both small-scale and industrial battery pack applications.
Consistent Performance and Excellent Safety
Cylindrical lithium cells are widely chosen for their uniform shape, automated production compatibility, and strong cell-to-cell consistency, making them ideal for high-volume battery assembly. Their metal shell enclosure offers improved pressure resistance and better heat dissipation, minimizing thermal runaway risk. These cells support high energy density, long cycle life, and fast charging/discharging, with capacity options ranging from 1500mAh to 6000mAh+ depending on the cell type. With proper BMS integration, cylindrical cells deliver safe, reliable power even under demanding operating conditions.
Custom Cylindrical Cell Packs from Large Power
As an experienced cylindrical cell manufacturer, Large Power not only supplies individual cells but also offers custom battery pack assembly services using cylindrical formats. We work with top-grade 18650, 21700, and 32700 cells, and support advanced features such as:
- Integrated PCM/BMS with overcharge, overcurrent, and thermal protection
- Cell matching and balancing for multi-cell configurations
- Spot welding, laser welding, and durable pack casing
- Communication protocols: CAN, SMBus, UART, I2C
- Certification-ready builds: UN38.3, IEC62133, CE, UL, RoHS
Whether for high-power discharge tools or long-cycle storage systems, we help design cylindrical cell packs optimized for performance, safety, and system integration.
With over two decades of lithium battery development, Large Power is a trusted cylindrical cell manufacturer serving clients in automotive, energy storage, consumer electronics, and industrial power systems. We offer flexible OEM/ODM services, competitive pricing, and engineering support from prototype to volume production. All of our cells undergo strict quality control, consistency testing, and aging procedures, ensuring durability, safety, and global shipment compliance. By choosing Large Power, you get reliable cylindrical cells built to power the future.
Why Choose Cylindrical Lithium Cells?
High Mechanical Strength, Production Maturity, and Universal Compatibility
Cylindrical lithium cells—such as the widely used 18650, 21700, and 26650 formats—remain one of the most popular battery geometries in industrial and commercial applications. Their well-balanced characteristics make them ideal for projects that require mechanical durability, stable thermal performance, and scalable module integration. Here’s why cylindrical cells continue to lead in manufacturing and system-level deployments:
Superior Structural Integrity and Safety
The cylindrical shape offers inherent mechanical strength, enabling the cell to withstand physical stress and internal pressure changes without deformation. This makes them ideal for rugged environments like power tools, e-mobility, robotics, and outdoor devices where vibration, impact, or compression are factors.
Excellent Heat Dissipation and Thermal Uniformity
Cylindrical cells provide consistent spacing when packed, allowing for efficient airflow and predictable thermal profiles. This facilitates easier thermal management in densely packed battery modules—key for long-term reliability in high-current or high-capacity applications.
High Consistency and Cost-Efficiency in Mass Production
Thanks to decades of standardization and automation, cylindrical cells offer superior consistency across batches. They are widely available at scale with reliable quality control, making them highly cost-effective for OEMs and system builders requiring volume production with minimal variance.
Broad Compatibility and Easy Modular Integration
Cylindrical cells are compatible with a wide range of pack configurations—from 3S to 20S+ systems. Their shape allows for flexible layout options (linear, honeycomb, stacked), making them suitable for BMS-integrated solutions across e-bikes, UPS systems, industrial sensors, and energy storage cabinets.
Cylindrical Cells Applications
Our Cylindrical Cells are widely used in industrial and commercial battery applications that demand high structural integrity, consistent performance, and modular scalability. Featuring standardized dimensions (such as 18650, 21700, and 26650), cylindrical lithium cells offer excellent energy density, automated production compatibility, and robust mechanical stability. They are the preferred choice for high-performance battery packs in demanding environments, supporting reliable energy delivery across multiple industries.
Applied in e-bikes, scooters, motorcycles, and AGVs, supporting both propulsion and auxiliary power.
Employed in home solar storage, UPS systems, and telecom base station energy modules.
Ideal for flashlights, e-cigarettes, portable fans, wireless cameras, wearables, and compact medical instruments.
Cylindrical Cell Solutions for Durable and Efficient Power Systems
Looking for efficient power solutions without long lead times? Our Cylindrical Cell series features excellent mechanical stability, high energy density, and standardized dimensions, making them ideal for power tools, electric bikes, portable devices, and industrial energy systems.
As a professional manufacturer of cylindrical cells, we ensure reliable supply, competitive pricing, and expert technical support. Whether you need samples for evaluation or bulk procurement for mass production, we are ready to support your business.
Submit your application requirements now, and our team will match you with the right battery solution efficiently.
Cylindrical cells -FAQ
What are the common sizes of cylindrical cells?
Common models include 18650, 21700, and 26650. The numbers indicate the cell’s diameter and length in millimeters (e.g., 18650 = 18mm × 65mm).
How do cylindrical cells compare with cystic cells and prismatic cells?
Cylindrical cells offer high consistency, strong thermal performance, and cost-efficiency for automated production, though they have lower space utilization than pouch or prismatic types.
Can I customize the voltage, capacity and connectors for our project?
Yes. LARGE provides full customization—from single cells to complete battery packs—including capacity, voltage, BMS features, connectors, and packaging.
Can cylindrical cells be connected in series or parallel? Is a protection circuit necessary?
They can be connected in series or parallel, but must be used with a properly designed BMS to ensure protection from overcharge, overdischarge, and short circuits.
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