21700 3.7V 4000MAH Lithium System Cell

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Product Details:

Operating Temperature -20C to 60C
Features High Energy Density, Rechargeable, Long Cycle Life
Size 21700
Shelf Life 3-5 Years
Terminal Type Flat Top
Usage & Applications Flashlights, Power Banks, Electric Vehicles, E-bikes, Consumer Electronics
Batteries Type Dry Charged Battery
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21700 3.7V 4000MAH Lithium System Cell Price And Quantity

Minimum Order Quantity 10 Unit

21700 3.7V 4000MAH Lithium System Cell Product Specifications

Handles No
Features High Energy Density, Rechargeable, Long Cycle Life
Operating Temperature -20C to 60C
Material Lithium-ion
Size 21700
Nominal Voltage 3.7V
Cover Yes
Shelf Life 3-5 Years
Sealed Type Sealed
Battery Capacity 4000mAh
Weight Approx. 68g
Terminal Type Flat Top
Usage & Applications Flashlights, Power Banks, Electric Vehicles, E-bikes, Consumer Electronics
Batteries Type Dry Charged Battery

21700 3.7V 4000MAH Lithium System Cell Trade Information

Payment Terms Cash in Advance (CID)
Supply Ability 100 Unit Per Month
Delivery Time 10 Days
Main Domestic Market All India

Product Description

Experience the power and reliability of the 21700 3.7V 4000mAh Lithium System Cell. Engineered to deliver exceptional performance, this rechargeable battery offers long-lasting power for various applications. With its high capacity and stable voltage output, it ensures reliable operation in electronic devices, power tools, and portable appliances. Designed for efficiency and durability, this lithium cell is a versatile choice for demanding tasks. Trust in its performance to keep your devices running smoothly and efficiently, wherever your endeavors take you.

High Performance and Longevity

Engineered for optimal performance, this cell combines a 4000mAh capacity with a robust cycle life of more than 500 full charge cycles. Its self-discharge rate is minimal at 5%% per month, ensuring long shelf life and reliability, even during storage. This makes the battery ideal for applications requiring consistent, long-term power delivery.

Wide Range of Applications

Thanks to its cylindrical 21700 form factor and flat top terminal, the battery integrates seamlessly into flashlights, power banks, electric vehicles, e-bikes, and other consumer electronics. Its high continuous discharge rate of 8A supports both low and high current demands, making it versatile for different power needs.

Safety and Certification

The cell meets stringent safety standards, with overcharge and overdischarge protection available when used with compatible PCM/BMS modules. Certified with RoHS and CE, it adheres to global compliance requirements for both environmental and electrical safety, making it a trustworthy choice for manufacturers and end-users alike.

FAQs of 21700 3.7V 4000MAH Lithium System Cell:

Q: How should I properly charge the 21700 3.7V 4000mAh lithium cell?

A: To ensure optimal performance and longevity, charge the cell at a standard current of 2A and stop charging once the voltage reaches 4.2V. Always use a charger compatible with lithium-ion batteries and incorporate a PCM or BMS for overcharge protection.

Q: What types of devices or applications are suitable for this lithium cell?

A: The cell is ideal for flashlights, power banks, e-bikes, electric vehicles, and consumer electronics. Its high capacity and strong discharge rate make it versatile for both high-drain and everyday use scenarios.

Q: When should I replace the battery in my device?

A: The cell is designed for at least 500 charge-discharge cycles. Consider replacing it when noticeable capacity loss occurs or after reaching its cycle limit to maintain reliable performance in your application.

Q: Where can I safely store the lithium cell until use?

A: Store the battery in a cool, dry location between -10C and 45C. Avoid exposing it to extreme temperatures, moisture, or direct sunlight to preserve its shelf life, which ranges from 3 to 5 years when unused.

Q: What process ensures the cells safety during use?

A: For safe operation, always use the cell with a compatible protection circuit module (PCM) or battery management system (BMS) that prevents overcharge and overdischarge, as the cell itself requires external protection.

Q: How does the batterys high energy density benefit consumers?

A: High energy density allows the cell to deliver more power in a compact size, enabling lightweight and long-lasting battery solutions in devices where space and weight are crucial factors.

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