Samsung 21700 Battery Cell

Why Choose Senco Battery?

Proven Reliability in Every Cell

High Energy Density and Superior Performance

The 21700 lithium-ion cell delivers higher energy density and longer runtime compared to traditional 18650 batteries. With optimized electrochemical design and advanced manufacturing technology, it offers stable output, lower internal resistance, and excellent cycle life. These advantages make it ideal for applications requiring both compact size and powerful performance.

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Perfect Balance of Energy and Safety

Wide Industrial Applications

21700 battery cells are widely adopted in industrial equipment, e-bikes, power tools, energy storage systems, and electric vehicles. Their high discharge rate and thermal stability ensure reliable performance even under demanding operational conditions. Whether for mobility, backup power, or large-scale storage, the 21700 battery supports a wide range of professional energy solutions.

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The 18650’s standardized size and specifications make it compatible with most battery packs, holders, and management systems.Its cost-performance ratio allows bulk buyers to maintain high efficiency with stable long-term supply.

Customized Solutions and Supply Chain Advantage

Senco provides professional customization services for 21700 battery packs, integrating BMS design, structure optimization, and quality control in one process. With an efficient production chain and strict material sourcing standards, we guarantee consistent quality, fast delivery, and flexible cooperation models to meet various B2B client requirements.

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Powerful, Efficient, and Scalable — The 21700 Lithium Solution for Industry

  • <strong>Electric Vehicles & Mobility：High Energy for Long-Range Performance</strong>

    Electric Vehicles & Mobility: High Energy for Long-Range Performance

    21700 batteries are widely used in electric motorcycles, e-bikes, and low-speed EVs , offering up to 30% more capacity than 18650 cells.
    They enable longer range , lower heat generation , and faster charging for OEM applications.

  • <strong> Industrial Robots & AGVsConsistent Power for Autonomous Systems</strong>

    Industrial Robots & AGVsConsistent Power for Autonomous Systems

    With superior discharge stability and long cycle life, 21700 cells power AGVs, warehouse robots, and logistics carts .
    Our custom PACKs integrate smart BMS and cell-level protection , ensuring reliability in 24/7 operations.

  • <strong>Energy Storage & Backup Systems：High Density for Compact Storage Solutions</strong>

    Energy Storage & Backup Systems：High Density for Compact Storage Solutions

    21700-based modules provide high capacity in smaller footprints , ideal for residential ESS , telecom backup , and off-grid applications .
    We deliver matched cell balancing , ISO-certified production , and long-cycle performance for commercial clients.
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21700 Battery — Technical FAQs for OEM and Industrial Clients

What are the key advantages of 21700 cells compared to 18650?

21700 cells offer ~30% higher energy density, lower internal resistance, and better thermal performance. They're ideal for EVs, AGVs, and high-capacity ESS projects that require both high power and compact pack designs.

Are your 21700 cells genuine and traceable?

Yes. All cells are sourced directly from Tier-1 manufacturers (Molicel, Samsung, LG, Panasonic) and come with batch traceability, UN38.3, and MSDS documentation.

Do you provide custom battery pack design for 21700 cells?

Absolutely. We offer OEM PACK design, including BMS integration, thermal protection, and mechanical housing. Clients can specify voltage, capacity, and communication protocols (CAN, UART, RS485).

What certifications do your 21700 battery packs comply with?

Our 21700 battery packs meet UL1642 / IEC62133 / UN38.3 / CE / RoHS standards, ensuring global shipping and integration compliance.

What cycle life can I expect from your 21700 cells?

Cycle life varies depending on usage conditions, but typical performance reaches ≥2000 cycles at 80% DOD, under 1C charge/discharge — tested in controlled conditions.

Can you ensure consistency across large-volume shipments?

Yes. Our factory employs automated grading, matching, and aging systems, ensuring each shipment meets capacity, impedance, and voltage uniformity standards.