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Description
Power up your devices with the reliable performance of our 21700 rechargeable battery. Built for endurance and efficiency, this 4000mAh lithium-ion battery delivers consistent output and long-lasting power—perfect for high-drain electronics, flashlights, tools, and more.
Key Features:
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Battery Type: 21700 Li-ion Rechargeable
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Capacity: 4000mAh
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Nominal Voltage: 3.63V
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Maximum Charging Voltage: 4.2V
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Charging Method: Constant Current / Constant Voltage (CC-CV)
Charging Details:
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Standard Charging Current: 0.33C (1551mA)
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Fast Charging Current: 1C (4700mA)
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Charging Time: Approx. 4 hours
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CCCV Cut-Off: 0.05C (235mA)
Discharging Performance:
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Continuous Discharge Current: 9.4A (9400mA)
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Discharge Cut-Off Voltage: 2.5V
Durability & Cycle Life:
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Cycle Life: Maintains ≥3,760mAh after 1000 cycles (80% capacity at room temperature)
Storage & Operating Conditions:
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Storage Tolerance: Up to 30 days at 60°C
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Recommended Discharge (Storage): 0.2C (940mA) to 2.5V at room temperature
Specifications:
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Unit Dimensions: 70.80mm (Length) x 21.25mm (Diameter)
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Battery Weight: 69g
