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Inr21700 40mf Lithium Battery - China
price: contact company for price
Product Features:
Ultra-High Discharge Capacity
Instant High Current Output
Low Internal Resistance
High Power Performance
Strong Durability Application Areas Perfect for high-demand, high-safety use cases including: New national standard electric two-wheelers Electric scooters Electric motorcycles Electric mobility vehicles Other e-transportation and industrial power applications Explore more use cases in our Industry Applications Parameter：
Cell's Materials Phosphate Manganese Iron Lithium Doped with Ternary (30%)
Dimension (mm) Height: 70.8±0.2mm Diameter: 21.7±0.15mm
Nominal Voltage (V) 3.6V
Nominal Capacity (Ah) (0.2c) 4000mAh
Internal Resistance (mΩ) ≤22mΩ
Weight 66.2±1g
Max Discharge Rate 5C
Max Charge Rate 1C
Cycle life (DOD 80% 25℃) Charge: 0.5C, Discharge: 3C≥400 cycles
Charge: 0.5C, Discharge: 1C≥1000 cycles
Operating Temperature(Cell Surface) Charge: 0~45℃
Discharge: -10~60℃
Company Contact:
- Posted By: Zigong Joinsun co,. Ltd
- Phone: 0813-8258888
- Address: 6-45 Xinyuan Road, Yantan District, Zigong , Sichuan , China
- Email:
- Website: https://www.joinsunbattery.com/
Published date: September 22, 2025
- Business Description: Zigong JOINSUN Technology Co., Ltd. established in September 2022 with a registered capital of 60 million yuan, is a technology-oriented small and medium-sized enterprise specializing in the research and development, production, and sales of lithium-ion power batteries, ultra-large capacity energy storage batteries, battery management systems, rechargeable battery packs, and wind and photovoltaic energy storage systems.
The company boasts an advanced technology and management team, as well as a comprehensive R&D, production, quality control, sales, and service system, holding a significant brand position in the field of power batteries.
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