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21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices

    Buy cheap 21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices from wholesalers
     
    Buy cheap 21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices from wholesalers
    • Buy cheap 21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices from wholesalers
    • Buy cheap 21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices from wholesalers
    • Buy cheap 21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices from wholesalers
    • Buy cheap 21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices from wholesalers

    21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices

    Ask Lasest Price
    Brand Name : OiD
    Model Number : 21700
    Certification : Complies with UN38.3, CE, RoHS, and IEC 62133 safety standards.
    Price : $6.5 ~ $1.5
    Payment Terms : L/C,T/T,Western Union
    Supply Ability : 1000000
    Delivery Time : 3 ~ 30 days
    • Product Details
    • Company Profile

    21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices

    Product Overview

    The 21700 5500mAh lithium-ion rechargeable cell is a high-capacity cylindrical battery designed for applications requiring reliable power delivery across a wide temperature range. With robust performance characteristics and advanced safety features, this cell is ideal for use in high-drain devices, outdoor equipment, and low-temperature environments.

    Key Electrical Parameters

    ParameterSpecificationConditions
    Nominal Capacity5500 mAhCharge: 0.5C (2750 mA), CCCV, 4.2V, 0.02C cut-off; Discharge: 0.2C (1100 mA) to 2.5V
    Minimum Capacity5350 mAh
    Nominal Voltage3.6 V
    Internal Resistance≤ 25 mΩAC Impedance, 1000 Hz
    Charge Cut-off Voltage4.20 V
    Discharge Cut-off Voltage2.5 V
    Standard Charge Current0.5C (2750 mA)
    Standard Discharge Current1C (5500 mA)
    Max. Continuous Discharge Current2C (11000 mA)35°C > T ≥ 0°C
    Operating TemperatureCharge: 0°C to 45°C; Discharge: -40°C to 60°C
    Dimensions21.65 ± 0.2 mm (Diameter), 70.95 ± 0.2 mm (Height)
    Weight≤ 73 g

    Performance Characteristics

    Discharge Efficiency

    RateCurrentEfficiency
    0.2C1100 mA100%
    0.5C2750 mA≥ 95%
    1C5500 mA≥ 93%
    2C11000 mA≥ 90%

    Cycle Life

    • ≥ 70% capacity retention after 600 cycles (0.5C charge / 1C discharge, 4.2V–2.75V)

    Low-Temperature Performance

    TemperatureDischarge Efficiency
    -20°C (1C)≥ 80%
    -30°C (0.5C)≥ 75%
    -40°C (0.2C)≥ 60%

    Safety Features

    • Overcharge, over-discharge, short-circuit, and drop protection
    • Stable performance under extreme environmental conditions
    • Complies with standard lithium-ion safety testing protocols

    Applications

    • High-drain portable devices
    • Outdoor and low-temperature equipment
    • Power banks and energy storage systems
    • Medical and industrial devices

    Notes

    • All tests performed at 25±2°C and ≤ 85% RH unless otherwise specified.
    • Discharge efficiency calculated relative to 0.2C discharge capacity.

    Quality 21700 Battery 5500mAh 3.6V Lithium-Ion Cell with 2C Discharge for High-Drain Devices for sale
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