INR21700-50E Battery Features:
High Capacity for Ultra-Long Standby
Long Cycling life Ensures Longer Service Life
Efficient Charging
Excellent Low-Tempereture Adaptability
Power bank, Small-Scale Energy Storage, 3C Digital, Small Home Appliances, Security Devices, Lighting, Garden Tools, Hair Clippers
INR21700-50E Battery Parameter：
| Cell's Materials | Pure Ternary 811 |
| Dimension (mm) | Height: 70.8±0.2mm |
| Diameter: 21.7±0.15mm | |
| Nominal Voltage (V) | 3.6V |
| Nominal Capacity (Ah) (0.2c) | 5000mAh |
| Internal Resistance (mΩ) | ≤22mΩ |
| Weight | 69.5±1g |
| Max Discharge Rate | 5C |
| Max Charge Rate | 1C |
| Cycle life (DOD 80% 25℃) | Charge:0.5C, Discharge:3C≥600 cycles Charge:0.5C, Discharge:1C≥1000 cycles |
| Operating Temperature(Cell Surface) | Charge: 0~45℃ Discharge: -10~60℃ |
The INR21700-50E is a high-capacity cylindrical lithium-ion battery produced by JOINSUN. It uses a Nickel Cobalt Manganese (NCM) chemistry, designed for medium to high-power applications, offering excellent energy density and stable performance.
High Capacity Design: With a nominal capacity of 5000mAh, this battery ensures long-lasting performance for your devices.
Excellent Low-Temperature Performance: Operates reliably in a wide temperature range from -10℃ to 60℃, suitable for various environments.
Long Cycle Life: At 25℃, with 0.5C charging and 1C discharging, the battery can last over 1000 cycles, ensuring stable performance over time.
High Discharge Rate: Supports a maximum discharge rate up to 5C, ideal for high-power applications.
Avoid Overcharging and Over-Discharging: Use a proper charger; do not exceed 4.2V or drop below 2.5V.
Avoid High-Temperature Environments: Prolonged exposure to heat may reduce performance or pose safety risks.
Proper Storage: Store in a cool, dry place with 40%-60% charge if unused for extended periods.
Prevent Short Circuits: Ensure battery terminals do not come into contact to avoid hazards.
The INR21700-50E battery is an ideal choice for medium to high-power applications, offering high capacity, high discharge rate, and long cycle life. Whether used in power tools, electric vehicles, energy storage systems, or smart devices, it provides stable and reliable power. If you need customized battery packs, Joinsun offers professional custom solutions to meet your specific requirements. For more information or a quotation, please contact us.
→ INR21700 Cylindrical Lithium-ion Battery Series
Product Differentiation/Why Choose Joinsun:
01
Source Factory
With comprehensive services and quality assurance, employing cutting-edge technology and high-end materials to provide a longer average lifespan.
02
Professional Team and Advanced Production Equipment
A research and development team of over 30 people with 24 related patents. The company covers an area of 100 acres, equipped with 8 advanced coating production lines, 3 fully automated injection lines, 10 sets of fully automatic sheet winding machines, 6 fully automatic integrated welding production lines, etc., meeting the production capacity demand of 20GWh per day, ensuring product efficiency and quality.
03
Sales Network and Services
Jixin Technology has established offices in East China, South China, and an overseas affairs department, with sales networks gradually expanding to cover the Middle East and Southeast Asia regions. Striving to become a leading supplier in the power battery and energy storage lithium battery markets, providing comprehensive service and support.
04
High Cost-Effectiveness
Joinsun products provide high value for their cost.
Industrial Packaging That Can Be Customized According to Requirements.
* Warranty Policy: Provide warranty and replacement service within a certain period of time to ensure the interests of customers.
* Important Notes: Please strictly follow the instructions provided in the product manual.
Customer Feedbacks
JOINSUN battery packs a powerful punch. lt has never failed to provide enough energy to keep our devices running smoothly. From our smartphone to my portable speakers, this battery has got it covered.
Jacob
JOINSUN has provided us with customized lithium battery solutions for our energy storage systems. Their batteries are UL and CE certified, ensuring safety and reliability. Fast shipping and great customer support!
John
We needed custom lithium battery packs for our electric bikes, and JOINSUN delivered exactly what we wanted. Their R&D team helped optimize the design, and the production was quick. Definitely our go-to supplier for long-term cooperation!
Sarah
We've been sourcing 18650 and 21700 battery packs from JOINSUN for over a year. The battery quality is excellent, with stable performance, high capacity, and long cycle life. Their team is very professional and responsive. Highly recommended!
Michael
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5C High Rate Continuous Discharge 8C High Rate Non-Continuous Discharge Power Tools and Electric Garden Tools 21700 Lithium Cells CE, UL 1642, FCC, IEC 62619, CB, BIS, PSE, 3C (CCC)
High Capacity for Ultra-Long Standby
Long Cycling life Ensures Longer Service Life
Efficient Charging
Excellent Low-Tempereture Adaptability
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