600 Cycles 3.6 Volt Battery 40A Discharge 4000mAh 21700 Battery High Capacity

INR21700L40A40 3.6V 4000mAh 40A Discharge 600 Cycles 21700 Battery

Product Name:
INR21700L40A40 21700 Battery

Advantages:

• High capacity for extended runtime
• Superior performance in low-temperature environments
• Long cycle life with reliable capacity retention
• Certified for safety and quality assurance

Specifications:

Cycle Life:

Discharge Curve:

Operating Temperature Range:

Certifications:
BIS, KC, BSMI, CB, UL, CCC

Key Features:

• High capacity for extended runtime
• Low internal resistance for efficient power delivery
• Suitable for extreme temperature environments
• Certified for global safety standards

Applications:

• Electric vehicles and hybrid vehicles
• Power tools and industrial equipment
• Portable medical devices
• Energy storage systems (ESS)
• Emergency lighting and backup power

Usage Warnings & Precautions:

• Avoid overcharging or over-discharging the battery.
• Do not expose the battery to high temperatures or direct sunlight.
• Use only compatible chargers and devices.
• Keep away from children and flammable materials.

Storage Guidelines:

• Store in a cool, dry place at 20°C to 25°C.
• Maintain a charge level of 30% to 50% for long-term storage.
• Avoid storing in fully charged or fully discharged states.

Warranty & Disclaimer:
This product is covered by a limited warranty against manufacturing defects. The warranty does not cover damage caused by misuse, improper handling, or unauthorized modifications. Always follow the manufacturer’s guidelines for safe and optimal use.

Our Mission:  Original Innovation, Power the Future!

As a high-tech enterprise specializing in the R&D and manufacturing of lithium-ion batteries, sodium-ion batteries, and solid-state batteries. Founded in 2020 in Shenzhen, China’s innovation hub, we are driven by our core philosophy of "Original Innovation & Development" , delivering sustainable, high-performance energy solutions for global applications, including consumer electronics, smart devices, electric vehicles, and energy storage systems.

With dozens of proprietary patents, the accreditation of Guangdong Provincial Eco-Friendly Lithium Battery Engineering Research Center, and strategic collaborations with leading institutions like National University of Singapore, Wuhan University, and Shenzhen University, OiD continuously pushes the boundaries of battery technology. Our products power critical infrastructure, including high-speed rail energy storage, residential solar systems, and defense projects, accelerating the global transition to clean energy.

Key Strengths

1.  Original Innovation
   • Core technologies in Li/Na-ion and solid-state batteries, backed by inventions, utility models, and design patents.
   • Joint R&D centers with top universities (e.g., Wuhan University), enabling rapid commercialization of cutting-edge research.
2.  End-to-End Energy Solutions
   • 500+ customizable battery models for consumer electronics, EVs, and grid-scale storage.
   • Superior performance: high energy density, fast charging, extended cycle life, and extreme-temperature resilience
3. Sustainability Commitment
   • Eco-conscious materials (e.g., cobalt-free cathodes, solid electrolytes) and processes to minimize environmental impact.
4. Global Reach
   • R&D Hubs: Shenzhen, Wuhan (university partnerships)
   • Manufacturing: Automated production lines in Shenzhen
   • Markets: Asia, Europe, North America