Meet the 21700 4000mAh High-Discharge Lithium-Ion Cell – Power Redefined
Today’s energy markets demand high performance. Thermal reliability is equally vital. Henan Yichuan introduces the INR21700P-4000mAh. This is a true 21700 4000mAh high-discharge lithium-ion cell. It delivers exceptional power density. It also offers extended cycle life. Safety is never compromised.
Furthermore, this cell suits various applications. Consider cordless power tools, e-mobility, or stationary storage. In each case, this high-power Li-ion cell balances energy and muscle. Its full-tab design reduces internal resistance to ≤5mΩ. Consequently, it enables 40A continuous discharge. That is a rare feat in standard 21700 sizes.
Moreover, the 4000mAh nominal capacity ensures longer runtimes. Your equipment runs harder and cooler. This combination of power and endurance is unmatched.
Unmatched Discharge: The 21700 4000mAh High-Discharge Lithium-Ion Cell Delivers 40A
For high-drain uses, discharge rate is critical. The INR21700P supports 10C continuous discharge (40A). It even handles 15C (60A) with temperature cut-off. Therefore, it ranks among the most robust high-drain cylindrical cells available.
In standard tests, this 21700 4000mAh battery retains over 95% of its 0.5C capacity at 10C. As a result, you get near-full usable energy under extreme loads. That is a game-changer for drones, robotic mowers, and heavy-duty tools. They need instantaneous current spikes without voltage sag.
Additionally, AC impedance stays below 5 mΩ (at 1kHz). This lowers heat generation. It also boosts overall system efficiency. For buyers seeking a 40A continuous discharge battery, this model delivers proven performance. It avoids premature overheating and capacity fade.
Cycle Life Excellence of the 21700 4000mAh High-Discharge Lithium-Ion Cell
Cycle life directly affects total cost of ownership. Our rechargeable Li-ion 4000mAh cell undergoes rigorous 40A cycling (1.5C charge, 40A discharge). It still achieves ≥60% of nominal capacity after 300 cycles. This holds even with a surface temperature cut-off at 80°C.
Hence, your end products maintain a competitive lifespan in heavy-use scenarios. For comparison, many conventional cells drop below 60% before 200 cycles under similar stress. However, the INR21700P’s robust chemistry and full-tab construction minimize lithium plating. They also reduce structural degradation. Consequently, your investment lasts longer. This long cycle life 21700 design directly addresses high-frequency usage applications.
Wide-Temperature Mastery of This High-Power 21700 4000mAh Lithium-Ion Cell
Operational range often becomes a hidden bottleneck. The INR21700P operates flawlessly from -20°C to 80°C during discharge. It charges safely between 0°C and 50°C. At sub-zero conditions, it retains ≥75% of room-temperature capacity at -20°C. At 60°C, discharge capacity actually meets or exceeds 25°C performance. That is a rare attribute for high-power cells.
This wide-temperature battery adaptability makes it ideal for outdoor equipment. It also suits automotive auxiliary systems and solar storage in extreme climates. You no longer need separate winter and summer battery variants. This 21700 4000mAh high-discharge cell handles all environments reliably.
Safety Certifications for the 21700 4000mAh High-Discharge Lithium-Ion Cell
Safety is the top priority for any procurement decision. This lithium-ion battery for power tools and other demanding uses has passed a comprehensive suite of international-standard safety tests. All tests occur under strict ventilation and protective conditions (25°C±2.5°C).
Highlights include:
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Overcharge protection – charges to 5V at 1C without fire or explosion.
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Forced discharge – reverse 1C charging for 90 minutes – no fire, no explosion.
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Short-circuit tests (ambient and 55°C) – no ignition.
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Crush, impact, and drop (1.2m onto concrete) – no fire, no explosion.
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130°C hot oven – 5°C/min ramp, 60-minute hold – passes without thermal runaway.
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Thermal cycling – 75°C for 48h then -20°C for 6h – no leak, no fire.
These results confirm that the INR21700P is a safety-certified lithium cell. It suits even the most risk-averse projects. With every test passed, you can confidently integrate this 21700 4000mAh high-discharge cell into your systems.
Precise Dimensions of the 21700 4000mAh High-Discharge Battery (Full-Tab 21700 Cell)
Consistent dimensions and weight simplify pack design. The cell measures 21.40±0.2 mm in diameter. Its height is 70.80±0.2 mm. Weight is ≤70g. This standard 21700 footprint allows drop-in replacement. It also enables easy scalability from 1S to multi-series packs.
Moreover, the positive terminal features a robust safety header structure. Each cell is barcode-marked for full traceability. That is essential for quality management and recall readiness. When you choose this 21700 battery 4000mAh, you get physical consistency that streamlines production.
Reliable Supply: Choose the 21700 4000mAh High-Discharge Lithium-Ion Cell
Henan Yichuan operates from a modern facility in Yucheng County, Henan Province. We strictly adhere to hazardous substance control (RoHS-compliant). Every cell ships at a storage voltage of 3.6–3.7V to maximize shelf life.
We understand that procurement managers value consistency. Our production processes ensure minimal batch-to-batch variation. We also welcome custom barcode printing per your requirements. This high-power Li-ion cell is backed by a dependable supply chain. Therefore, you never face unexpected shortages.
Why the 21700 4000mAh High-Discharge Lithium-Ion Cell Fits Your Application
To summarize, this 21700 4000mAh high-discharge lithium-ion cell offers:
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High energy + high power – 4000mAh and 40A continuous drain.
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Superior cycle life – 300 cycles to 60% retention under aggressive 40A cycling.
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Extreme temperature resilience – -20°C to 80°C discharge with strong retention.
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Proven safety – passes overcharge, short-circuit, crush, impact, and thermal abuse.
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Full-tab technology – low IR, high efficiency, and excellent heat dissipation.
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Ready-to-integrate – standard 21700 dimensions and ≤70g weight.
Whether you are an OEM manufacturer, a system integrator, or a distributor, the INR21700P delivers reliability and performance. Today’s energy-intensive applications demand exactly these qualities. Contact our sales team for samples, datasheets, or custom quotes. Experience the difference of a truly high-power 21700 cell.
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