INR21700-40PHigh-Rate Lithium-Ion Battery Features:
Ultra-High Discharge Capacity
Instant High Current Output
Low Internal Resistance
High Power Performance
Strong Durability
INR21700-40PHigh-Rate Lithium-Ion Battery Application Areas:
Garden Tools
Power Tools
Hair Clippers
INR21700-40PHigh-Rate Lithium-Ion Battery Parameter:
Cell's Materials | Pure Ternary 811 |
Dimension | Height: 70.8±0.2mm |
Diameter: 21.7±0.15mm | |
Nominal Voltage | 3.6V |
Nominal Capacity (0.2c) | 4000mAh |
Internal Resistance | ≤22mΩ |
Weight | 66.5±1g |
Max Discharge Rate | 8C |
Max Charge Rate | 1C |
Cycle life (DOD 80% 25℃) | Charge:0.5C, Discharge:5C≥500 cycles, Charge:0.5C, Discharge:3C≥1500 cycles |
Operating Temperature (Cell Surface) | Charge: 0~45℃ Discharge: -10~60℃ |
The INR21700-40P High-Rate Lithium-Ion Battery is a premium-grade cylindrical cell designed for power-hungry applications such as electric mobility, cordless tools, energy storage systems, and industrial equipment. With a nominal capacity of 4000mAh and continuous discharge rate of up to 10C, this battery delivers stable power output, exceptional thermal control, and long cycle life.
Manufactured by Zigong JOINSUN Technology Co., Ltd., the INR21700-40P is engineered using high-quality raw materials and advanced lithium-ion chemistry, ensuring excellent safety, low self-discharge, and superior current performance.
The INR21700-40P lithium-ion cell is specifically engineered for high-discharge applications, offering consistent performance under heavy loads. With its 4000mAh capacity and up to 40A continuous discharge capability, it meets the demanding power needs of modern electric systems. Below are the key industries and applications where this high-rate battery excels.
The 40P cell is widely used in:
Electric bicycles and scooters
Electric motorcycles
Low-speed electric vehicles (LSEVs), such as delivery carts and warehouse AGVs
Benefit: Higher energy density means fewer cells per pack, reducing weight and improving efficiency.
Drills, impact drivers, saws, grinders
Industrial handheld devices
Battery-powered construction equipment
Why it's ideal: High discharge rate (up to 40A) ensures instant power burst and sustained runtime.
Residential solar battery backup
Portable power stations
Modular battery banks for smart homes
With long cycle life (≥1000 cycles), the 40P cell is well-suited for deep-cycle ESS usage.
Battery-powered sprayers and tractors
Irrigation controllers
Field monitoring devices
Rural and remote areas benefit from its reliability and low maintenance needs.
Camping power banks
Emergency backup batteries
Portable solar generators
Lightweight and compact design makes it ideal for mobile applications with demanding power needs.
Military radios
Unmanned ground vehicles (UGVs)
Night vision and surveillance gear
Military-grade applications require high reliability, extreme temperature resistance, and fast discharge – all supported by the INR21700-40P.
Drones and UAVs
Electric aviation prototypes
Aeronautical instrumentation
Lightweight yet powerful, the 40P cell helps reduce payload stress while maximizing battery life.
Electric Mobility | High energy density, compact form factor |
Power Tools | Instant torque, high amp discharge |
Energy Storage | Long cycle life, safe chemistry |
Agriculture | Low maintenance, robust output |
Military Devices | Rugged design, thermal stability |
Off-Grid Power | Portability, extended runtime |
A: It indicates the model supports 4000mAh capacity and “P” refers to its high-power output profile.
A: Yes, with a 10C discharge rate, it is ideal for high-load cordless power tools.
A: Yes, it’s a rechargeable lithium-ion battery with more than 1000 charge cycles.
A: Use a lithium-ion charger that supports 4.2V cutoff and current within manufacturer specs.
A: Absolutely. We offer customized solutions for mobility, industry, storage, and defense applications. Joinsun provides full OEM/ODM customization services, including:
Series and parallel pack assembly
BMS (Battery Management System) integration
Custom voltage/capacity output
Casing, wiring, and connector options
Whether you're building a new energy storage system, electric vehicle, or smart device, Joinsun’s INR21700-40P is the right choice for high-drain, mission-critical applications. Contact us now to discuss OEM/ODM battery solutions tailored to your industry.
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.
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