| Customization: | Available |
|---|---|
| Type: | Lithium Battery |
| Charger Type: | Electric Charger |
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OEM Top Quality 18650 Li-ion 10C high rate discharge 2500mAh Rechargeable Lithium ion Battery with PCB 2500 mah 3.7v Cell
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Item
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Test Methods and Condition
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Criteria
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0.2C Capacity
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After standard charging, rest battery for 10mins, then discharge at 0.2C to voltage 3.0V, recording the discharging time
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>=300min
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Cycle life
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Constant current 1C charge to 4.2V, then constant voltage charge to current declines to 0.01C, rest 10 minutes. Constant current 10C discharge to 3.0V, rest 10 minutes. Repeat above steps till continuously discharging capacity higher than 80% of the initial capacity of the cell.
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>=300times
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Capability of keeping electricity
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20±5ºC, after standard charging, rest the batteries 28days, discharging at 0.2C to voltage 3.0V, recording the discharging time.
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>=240min
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Item
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Test Methods and Condition
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Criteria
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Over charge testing
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At 20±5ºC, charging cells with constant current 2.0C to voltage 5.0V. Stop test till cell temperature 10ºC lower than max temperature.
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No fire or explosion
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Over discharge testing
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At 20±5ºC, according to the requirements of the standard charge, the cell will be discharge to cutoff voltage, then the cell is subjected to a forced discharge at constant current 1C, to 4.2V. The total duration for the forced discharge testing is 90min.
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No fire or explosion
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Short circuit testing
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At 55±5ºC, after standard charging, connect cells anode and cathode by wire of which impedance less than 80±20mΩ. The cell remains on test for 24 hours or until the surface temperature declines by 20% of the max temperature rise.
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No fire or explosion
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Item
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Test Methods and Condition
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Criteria
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Discharge at high temperature
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After standard charging, rest the cells 4h at 60±2ºC, then discharging at 1C to voltage 3.0V, recording the discharging time.
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>=54min
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Discharge at low temperature
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After standard charging, rest the cells 16h at -20±2ºC, then discharging at 0.2C to voltage 3.0V, recording the discharging time.
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>=210min
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Thermal Shock
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Put the cells in the oven. The temperature is to be raised at 5±2ºC per minute to a temperature of 130±2ºC, and remains 30 minutes.
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No fire or explosion
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