3.6V-2000mAh-Samsung-INR18650-20Q
Samsung INR18650-20Q
The Sansung INR-18650-20Q battery comes up with a nominal capacity of 2000mAh, the voltage of 3.6V. It is a high drain discharge power lithium ion battery which is commonly used in power tools and other equipments. This is an absolutely excellent cell for anyone seeking high performance 18650 cells.
HIGHLIGHTS OF ICR18650-20Q
Nominal Capacity: 2000mAh
Nominal Voltage: 3.6V
Max. Discharge Current: 15A (ambient temperature 25°C)
APPEARANCE
There shall be no such defects as deep scratch, crack, rust, discoloration or leakage, which may adversely affect the commercial value of the cell.
Diameter :max.18.33+/-0.07mm
Diameter is defined as the largest data value measured on the “A” area of a cylindrical cell.
Height : max.65.05+/-0.15mm
Weight: max.47.0g
Nominal Specification of INR18650-20Q
| Item | Specification |
|---|---|
| Nominal Capacity | 2600mAh (0.2C, 2.75V discharge) |
| Minimum Capacity | 2550mAh(0.2C, 2.75V discharge) |
| Charging Voltage | 4.20±0.05 V |
| Nominal Voltage | 3.63V |
| Resistance | 7~16mΩ |
| Resistance(After Trip) | Max. 28mΩ |
| Charging Method | CC-cV(constant voltage with limited current) |
| Charging Current | Standard charge: 1300mA |
| Rapid charge : 2600mA | |
| Charging Time | Standard charge : 3hours |
| Rapid charge : 2.5hours | |
| Max. Charge Current | 2600mA(ambient temperature 25℃) |
| Max. Discharge Current | 5200mA(ambient temperature 25℃) |
| Discharge Cut-off Voltage | 2.75V |
| Cell Weight (max. (g)) | 47.0g max |
| Cell Dimension | Diameter : 18.40mm max |
| Height : 65.00mm max | |
| Operating Temperature(Cell Surface Temperature) | Charge:0 to 45°C |
| Discharge:-20 to 60°℃ | |
| Storage Temperature | 1 year : -20~25°C |
| 3 months : -20~45°C | |
| 1 month : -20~60°C |
Note
1): If the cell is kept as ex-factory status (50% of charge), the capacity recovery rate is more than 80%.
Characteristics of INR18650 20Q
1 Standard charge
This “Standard charge” means charging the cell CCCV with charge current 0.5CmA (1,000mA), constant voltage 4.2V and 20mA cut-off in CV mode at 25℃ for capacity. .
2 Rapid charge
Rapid charge means charging the cell CCCV with charge current 4A and 100mA cut-off at 25℃
3 Nominal discharge capacity
The standard discharge capacity is the initial discharge capacity of the cell, which is measured with discharge current of 400mA with 2.0V cut-off at 25℃ within 1hour after the standard charge.
Nominal discharge capacity ≥ 2,000mAh
4 Standard rated discharge capacity
The standard rated discharge is the discharge capacity of the cell, which is measured with discharge current of 10A with 2.0V cut-off at 25℃ within 1hour after the standard charge.
Standard rated discharge capacity ≥ 1,950mAh
5 Initial internal impedance
Initial internal impedance measured at AC 1kHz after standard charge
Initial internal impedance ≤ 18mΩ
6 Temperature dependence of discharge capacity
Capacity comparison at each temperature, measured with discharge constant current 10A and 2.0V cut-off after the standard charge is as follows.
| Discharge temperature | ||||
|---|---|---|---|---|
| -20℃ | -10℃ | 0℃ | 25℃ | 60℃ |
| 60% | 75% | 80% | 100% | 100% |
Note: If charge temperature and discharge temperature is not the same, the interval for temperature change is 3 hours.
Percentage index of the discharge at 25℃ at 10A (=1,950mAh) is 100%.
7 Temperature dependence of charge capacity
Capacity comparison at each temperature, measured with discharge constant current 10A and 2.0V cut-off after the standard charge is as follows.
| Discharge temperature | Discharge temperature | |||||
|---|---|---|---|---|---|---|
| -20℃ | -10℃ | 0℃ | 25℃ | 60℃ | 25℃ | |
| Relative capacity | 60% | 75% | 80% | 100% | 100% | |
Note: If charge temperature and discharge temperature is not the same, the interval for temperature change is 3 hours.
Percentage index of the discharge at 25℃ at 10A (=1,950mAh) is 100%.
8 Charge rate capabilities
Discharge capacity is measured with constant current 10A and 2.5V cut-off after the cell is charged with 4.2V as follows.
| Charge condition | ||
|---|---|---|
| Current | Standard 1A | Maximum rapid charge 4A |
| Cut-off | 100mA | 100mA |
| Relative Capacity | 100% | 98% |
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