Large Capacity 21700 4000mAh 3.7V Cylindrical Lithium Iron Ion Semi solid State Battery CE Certified
$4.97-5
/pieces
Price varies depending on material, logo, quantity and customization requirements.
Quality You Can Trust
Flexible &
Scalable Solutions
Customizable Product Options
Comprehensive Specifications
Your Reliable Business Partner
Category:
Cylindrical Lithium Ion Batteries
Introduction
| Battery Size | 21700 | Cathode Materials | LiNiMnCoO2 |
| Cycle Life | 300 cycles | Application | Power Tools, Consumer Electronics |
| Battery Type | Semi-solid state | Operating Temperature(℃) | -20-60 |
| Weight | 72g | Nominal Voltage | 3.7V |
| Nominal Capacity | 4000mAh | Size | 21.0*70.5mm |
| Internal Resistance | ≤10mΩ | Charging Cut-off Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.5V | Maximum Constant Charging Current | 4A |
| Maximum Continuous Discharging Current | 8A | Cycle Life | ≥300(80%DOD) |
We are China Loong Energy Storage Co., Ltd., a professional manufacturer and supplier specializing in Energy Storage. We have brought together and coordinated resources across the Energy Storage supply chain, enabling us to maintain consistent product quality and establish long-term partnerships with clients worldwide.
Our mission is to provide high-quality products and reliable service. We are committed to offering the following advantages:
- Stable production system ensuring consistent quality, dependable supply, and standardized manufacturing management;
- Strict quality control covering material selection, processing, surface finishing, and final packaging;
- Variety of products and specifications to meet diverse project requirements and application scenarios;
- OEM & customization support based on drawings, samples, or specific technical requirements;
- Flexible packaging solutions to ensure safe handling and transportation of products;
- Continuous improvement in products and services to better support customers in different markets.
If you are interested in our products, please feel free to contact us. We look forward to establishing long-term and mutually beneficial cooperation with you.
