INR21700 | High-Capacity & Long-Life Lithium-ion Batteries,21700 Battery Manufacture

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21700 Cylindrical Cells: Joinsun INR21700 Lithium-Ion Battery - High-Performance Power Solution

Introduction to Joinsun INR21700 Lithium-Ion Battery

The INR21700 lithium-ion battery cells manufactured by Zigong Joinsun Technology Co., Ltd. have established a strong reputation in the power battery sector due to their outstanding performance and reliability. As a leading 21700 Battery Manufacture, JOINSUN has become a trusted name in the industry. These 21700 cylindrical lithium-ion batteries are designed to offer high capacity, high discharge rates, long lifespan, and superior safety features. Their eco-friendly nature further enhances their appeal for a wide range of industries, including electric vehicles, power tools, agricultural equipment, toys, and energy storage applications.

Key Features of the Joinsun INR21700 Lithium-Ion Battery

As a 21700 Battery Manufacture, we prioritize quality, performance, and safety. Our 21700 cylindrical cells come with the following standout features:

1. Capacity: 4000mAh-5500mAH capacity to meet the diversified needs of different devices

2. Voltage: The standard voltage is 3.6V, providing stable power.

3. Charging speed: Fast charging available, with a maximum rate of up to 15C (21700-40T), greatly reducing the required charging time.

4. Cycle life: After rigorous cycle testing, the long cycle life could reach over 300 cycles, far exceeding the lifespan of ordinary batteries.

5. Safety protection: Equipped with multiple safety protection circuits, including overcharge, over-discharge, overheat, and short circuit protection, ensuring safe usage.

6. Stylish Design: Features a steel shell with excellent wear resistance and a stylish appearance.

7. Environmental protection materials: Free of environmentally harmful elements such as cadmium, lead, and mercury, compliant with European RoHS regulations, ensuring a green and eco-friendly battery.

8. Lightweight and Portable: small size, light weight, easy to carry and use.

9. Versatile Compatibility: Wide device compatibility, suitable for various electronic devices and new energy applications.

Main Advantages of 21700 Cylindrical Cells

Our 21700 cylindrical cells offer several benefits over traditional lithium-ion batteries, including:

· High Energy Density: With up to 20% more energy density compared to 18650 batteries, 21700 cells provide longer runtime and lighter weight, ensuring optimal power delivery.

· Longer Cycle Life: Our 21700 cylindrical lithium-ion batteries provide superior cycle performance, offering longevity and better value for money.

· Low Self-Discharge: The 21700 cells retain charge for longer periods, making them an ideal choice for long-term storage.

· Wide Temperature Range: These cells operate efficiently within a temperature range of -20°C to 80°C, suitable for various environmental conditions.

· No Memory Effect: The 21700 cylindrical cells can be charged at any time without affecting their performance, offering more convenience for users.

Applications of Joinsun INR21700 Cylindrical Cells

The versatility of 21700 cylindrical cells makes them ideal for various applications. Some of the key industries and products that benefit from these batteries include:

· Electric Vehicles: Used in electric two-wheelers, tricycles, and hoverboards.

· Power Tools: In tools such as electric garden tools and medical equipment.

· Energy Storage: For portable power stations, power banks, and commercial outdoor energy storage solutions.

· Consumer Electronics: Found in a variety of household devices and toys.

Why Joinsun Is the Leading 21700 Battery Manufacture

JOINSUN is more than just a battery supplier; we are a trusted partner in energy storage solutions. With over 30 R&D experts and 24 related patents, JOINSUN specializes in delivering high-performance 21700 cylindrical lithium-ion batteries that exceed industry standards. Our extensive manufacturing capacity includes advanced coating production lines, automated injection lines, and integrated welding production lines, enabling us to provide customized, high-quality solutions to meet your specific power needs.

Warranty Policy: Providing a warranty and replacement service within a certain period to ensure customer satisfaction.

Attention: Please use and charge the product correctly according to the product manual to avoid improper operations such as overcharging, over-discharging, short circuits, etc.

Product Parameter:

JoinsunSeries	Model	Code	Nominal Capacity (mAh)	Maximum Capacity (mAh)	Internal Resistance (mΩ)	Cycle Life(Capacity Retention Rate> 80%)	Continuous Rate (Ambient Temperature: 25℃)	Maximum Multiplier (Not Supported)
HighRateSeries	INR21700-40	40P	4000	3900 (2.5V)	≤22	3C circulation≥2500 cycles	+1C/-3-5C	8C
HighRateSeries	INR21700-45	45P	4500	4400 (2.5V)	≤22	3C circulation≥ 1500 cycles	+1C/-3-5C	8C
DriveSeries	NR21700-40	40D	4000	3900 (2.75V)	≤22	3C circulation≥800 cycles	+0.5C/-3C	5C
	NR21700-45	450	4500	4400 (2.75V)	≤22	3C circulation≥ 800 cycles	+0.5C/-3C	5C
	INR21700-48	48D	4800	4700 (2.5V)	≤22	3C circulation≥ 800 cycles	+0.5C/-3C	5C
	INR21700-50	50D	5000	4900 (2.5V)	≤22	2C circulation≥ 400 cycles	+0.5C/-3C	5C
3C Series	NR21700-40	40C	4000	3900 (2.75V)	≤22	2C circulation≥ 400 cycles	+0.5C/-2C	4C
	NR21700-45	45C	4500	4400 (2.75V)	≤22	2C circulation≥400 cycles	+0.5C/-2C	4C
	INR21700-48	48C	4800	4700 (2.5V)	≤22	2C circulation≥400 cycles	+0.5C/-2C	4C
	NR21700-50	50C	5000	4900 (2.5V)	≤22	3C circulation≥400 cycles	+0.5C/-2C	4C
StorageSeries	NR21700-40	40E	4000	3900 (2.5V)	≤22	3C circulation≥ 600 cycles	+05~1C/-2~3C	5C
	INR21700-45	45E	4500	4400 (2.5V)	≤22	3C circulation≥ 600 cycles	+0.5-1C/-2-3C	5C
	INR21700-48	48E	4800	4700 (2.5V)	≤22	3C circulation≥ 600 cycles	+0.5~1C/-2~3C	5C
	INR21700-50	50E	5000	4900 (2.5V)	≤22	3C circulation≥ 600 cycles	+05~1C/-2~3C	5C