EXO-3287 EXO21700S

Batch Authentication Report

  • Test Info

    Tester – Ben F
    Testing Machines – BK Precision 8601, CBAIV, and YR1
    Test Date : 18/09/2018

  • Cell Info

    Manufacturer: EXOCELL
    Model : INR21700S
    Factory : China
    Size : 21700
    Maximum Discharge Rate : 24A (Single Cell – No cooling)
    Capacity: 3750mAh
    Maximum Voltage : 4.2V
    Nominal Voltage : 3.7V
    SOC (State of Charge on Arrival/Shipping) : 30%

Multiple cells are used to conduct this test and are selected at random.

    Internal Resistance

    8.90

    mAh Test – Discharge at 1A

    This test is primarily used to measure the mAh of the cell. There are several different currents commonly used to do this test. Results will vary slightly. A 1A discharge is Exocell's standard discharge to measure mAh.
    Expected Results
    This cell should achieve between 3700mAh – 3800mAh and not exceed 30C.

    The ambient temperature of our testing environment may change slightly, and therefore results will never be the same – but results will satisfy the purpose of this test.

    Capacity
    3730mAh
    Cell achieved expected capacity.
    Temperature
    25C
    Cell did not exceed maximum temperature.
    Image

    Max. Discharge Test – Discharge at 24A

    This test is used to discover the cell's maximum continuous discharge. This cell should not exceed 80C at any point during its discharge.
    Expected Results
    This cell should achieve between 3500mAh – 3750mAh and not exceed 80C. The ambient temperature of our testing environment may change slightly, and therefore results will never be the same – but results will satisfy the purpose of this test.
    Capacity
    3567mAh
    Cell achieved expected capacity.
    Temperature
    73C
    Cell did not exceed maximum temperature.
    Image
    Results
    The temperature for this cell was low. It was easily able to handle 24A. However, at above 24A the capacity suffered.