Product Features:
High Capacity for Ultra-Long Standby
Long Cycling life Ensures Longer Service Life
Efficient Charging
Excellent Low-Tempereture Adaptability
Application Areas
Power bank, Small-Scale Energy Storage, 3C Digital, Small Home Appliances, Security Devices, Lighting, Garden Tools, Hair Clippers
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) | 4500mAh |
| Internal Resistance (mΩ) | ≤22mΩ |
| Weight | 68.5±1g |
| Max Discharge Rate | 5C |
| Max Charge Rate | 1C |
| Cycle life (DOD 100% 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 INR21700-45E Cylindrical Lithium-ion Battery is engineered for high-drain applications that require outstanding energy density, stable discharge performance, and long-term reliability. With a typical capacity of 4500 mAh, this 21700 lithium-ion cell is widely used in electric vehicles, e-bike battery packs, cordless power tools, portable energy storage systems, and various industrial devices.
Designed for both consumer and commercial applications, the INR21700-45E offers a perfect balance of power output, safety, and cycle life, making it one of the most versatile solutions for battery manufacturers and OEM projects.
High-capacity 4500 mAh design ideal for high-drain devices and continuous power output.
Stable and reliable 21700 cylindrical lithium-ion battery with excellent energy density and heat management.
Perfect for EV battery packs, power tools, e-bike / scooter batteries, and DIY battery projects.
Supports OEM / ODM customization, including custom battery packs, configurations, and branding.
100% tested for capacity, internal resistance, and cycle performance to ensure consistent quality.
Compliant with global safety standards, suitable for worldwide shipment and large-scale manufacturing.
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
Other Products
High Discharge Rate
High Temperature Resistance
Excellent Cycle Performance
Fast Charging
High Energy Density
Stability
Lightweight
Lower Discharge Rate
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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