3.6V-3150mAh-Samsung-INR18650-33G
Samsung INR18650-33G
The Sansung INR-18650-33G battery comes up with a nominal capacity of 3150mAh, the voltage of 3.6V. It is an absolutely excellent cell for anyone seeking high performance 18650 cells.
HIGHLIGHTS OF INR18650-33G
Nominal Capacity: 3150mAh
Nominal Voltage: 3.6V
Max. Discharge Current: 9750mA(not for continuous discharge)
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 INR18650-33G
Item | Specification |
---|---|
Typical Capacity | 3,150mAh (0.2C, 2.5V discharge) |
Minimum Capacity | 3,000mAh (0.2C, 2.5V discharge) |
Charging Voltage | 4.20V |
Nominal Voltage | 3.60V (0.2C discharge) |
Charging Method | CC-cV(constant voltage with limited current) |
Charging Current | Standard charge: 975mA |
Charging Time | Standard charge: 5hours |
Max. Charge Current | 3,250mA (not for cycle life) |
Max. Discharge Current | 6,500mAh (continuous discharge) |
9,750mAh (not for continuous discharge) | |
Discharge Cut-off Voltage | 2.5V |
Cell Weight (max. (g)) | 48g max |
Cell Dimension | Diameter(max.) : Φ 18.40 mm |
Height : 65.2mm 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 (30% of charge), the capacity recovery rate is more than 80%.
Characteristics of INR18650 20Q
1 Standard Charge
This “Standard Charge” means charging the cell with charge current of 975mA and constant voltage 4.20V at 25°C, 0.02C cutoff.
2 Standard Discharge Capacity
The standard discharge capacity is the initial discharge capacity of the cell, which is measured with discharge current of 650mA with 2.5V cut-off at 25°C within 1 hour after the Standard charge.
Standard Discharge Capacity ≥ 3,000mAh
3 Rated Discharge Capacity
The rated discharge capacity is the initial discharge capacity of the cell, which is measured with discharge current of 3,250mA with 2.5V cut-off at 25°C within 1 hour after the Standard charge.
Rated Discharge Capacity ≥ 2,700mAh (90% of 3,000mAh)
4 Initial internal impedance
Initial internal impedance measured at AC 1kHz after Standard charge.
Initial internal impedance ≤ 45mΩ
5 Temperature Dependence of Discharge Capacity
Discharge capacity comparison at each temperature, measured with discharge constant current 650mA and 2.5V cut-off with follow temperature after the Standard charging at 25°C.
Discharge temperature | |||
---|---|---|---|
-10°C | 25°C | 45°C | |
Relative Capacity | 50% | 100% | 95% |
Note: If charge temperature and discharge temperature is not the same, the interval for temperature change is 3 hours.
Percentage as an index of the Standard discharge capacity (=3,000mAh) is 100%.
6 Temperature Dependence of Charge Capacity
Capacity comparison at each temperature, measured with discharge constant current 650mA and 2.5V cut-off at 25°C after the Standard charge is as follow temperature.
Discharge temperature | Discharge Temperature | |||
---|---|---|---|---|
-10°C | 25°C | 45°C | 45°C | |
Relative Capacity | 50% | 100% | 95% |
Note: If charge temperature and discharge temperature is not the same, the interval for temperature change is 3 hours. Percentage as an index of the Standard discharge capacity (=3,000mAh) is 100%
7 Charge Rate Capabilities
Discharge capacity is measured with constant current 650mA and 2.5V cut-off after the cell is charged with 4.2V at 25°C as follows.
Charge Condition | |||
---|---|---|---|
Current | 975mA | 1,625mA | 3,250mA |
Cut-off | 5h or 0.02C | 3h or 0.02C | 2.5h or 0.02C |
Relative Capacity | 100% | 95% | 90% |
Note: Percentage as an index of the Rated discharge capacity (=2,700mAh) is 100%.










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