3.65V-3200mAh Samsung-INR18650-32E Battery
INR18650-32E
The Samsung INR18650 32E battery comes up with a nominal capacity of 2850mAh, the voltage of 3.65V .
The Samsung 32E is a popular lithium-ion cell. It is intended for use in high capacity 18650 battery packs. It can power a wide range of devices including an infrared thermometer, portable bill counter, or smart light-up clothing
This original lithium-ion Samsung INR18650-32E Flat Top battery has a voltage of 3.7 V and a capacity of 3000 mAh. This provides a power capacity of approximately 11.5 Wh. This 18650 battery has flat ends and is therefore slightly shorter than a conventional 18650 battery with Button Top. The battery has a continuous discharge of 6.4 A.
Please note: Flat Top batteries are not secured. It is therefore important to use these batteries in a safe manner and to be aware of the correct procedure with regard to discharging, charging, placing and using these batteries. Do not charge the battery above 4.2 V and do not discharge it further than 2.5 V.
This is an absolutely excellent cell for anyone seeking high performance 18650 cells.
HIGHLIGHTS OF Samsung INR18650 32E
Typical Capacity: 3,200mAh (0.2C, 2.50V discharge)
Minimum Capacity: 3,100mAh (0.2C, 2.50V discharge)
Charging Voltage: 4.2V
Nominal Voltage: 3.65V (0.2C discharge)
Charging Method: CC-CV (constant voltage with limited current)
Charging Current Standard charge: 960mA
Charging Time Standard charge: 5hours
Max. Charge Current: 3,200mA (not for cycle life)
Max. Discharge Current: 6,400mA (for continuous discharge), 9,600mA (not for continuous discharge)
Discharge Cut-off Voltage: 2.50V
Cycle life: 500 cycles to 70% with 3200mA discharge, 300 cycles with 6200mA discharge.
Cell Weight: 50g max
Cell Dimension: Height : 65.2mm max, Diameter(max.) : Ø 18.50 mm
Operating Temperature (Cell Surface Temperature): Charge : 0 to 45°C, Discharge : -20 to 60°C
Storage Temperature: 1 year : -20~25°C, 3 months : -20~45°C, 1 month : -20~60°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 : 18.50 mm(MAX)
Diameter is defined as the largest data value measured on the “A” area of a cylindrical cell.
Height :65.2mm(MAX)
Nominal Specification of Samsung-18650-32E
| Item | Specification |
|---|---|
| Typical Capacity | 3,200mAh(0.2C,2.50V discharge) |
| Minimum Capacity | 3,100mAh (0.2C,2.50V discharge) |
| Charging Voltage | 4.2V |
| Nominal Voltage | 3.65V(0.2C discharge) |
| Charging Method | CC-CV(constant voltage with limited current) |
| Charging Current | Standard charge: 960mA |
| Charging Time | Standard charge: 5hours |
| Max. Charge Current | 3,200mA (not for cycle life) |
| Max. Discharge Current | 6,400mA (for continuous discharge) |
| 9,600mA (not for continuous discharge) | |
| Discharge Cut-off Voltage | 2.50V |
| Cell Weight | 50g max |
| Cell Dimension | Height:65.2mm max |
| Diameter(max.): 18.50 mm | |
| Operating Temperature(Cell Surface Temperature) | Charge:0 to 45℃ |
| Discharge:-20 to 60℃ | |
| Storage Temperature | 1 year : -20~25°C |
| 3 months : -20~45°C | |
| 1 month : -20~60°C |
Characteristics
Standard Charge
This “Standard Charge” means charging the cell with charge current of 960mA and constant voltage 4.2V at 25°C, 0.02C cutoff.
Standard Discharge Capacity
The standard discharge capacity is the initial discharge capacity of the cell, which is measured with discharge current of 640mA with 2.50V cut-off at 25°C within 1 hour after the Standard charge.
Standard Discharge Capacity ≥ 3,100mAh
Rated Discharge Capacity
The rated discharge capacity is the initial discharge capacity of the cell, which is measured with discharge current of 3,200mA with 2.50V cut-off at 25°C within 1 hour after the Standard charge.
Rated Discharge Capacity ≥ 3,007mAh (97% of 3,100mAh)
Initial internal impedance
Initial internal impedance measured at AC 1kHz after Standard charge. Initial internal impedance ≤ 35mΩ
Temperature Dependence of Discharge Capacity
Discharge capacity comparison at each temperature, measured with discharge constant current 3,200mA and 2.50V cut-off with follow temperature after the Standard charging at 25°C.
| Charge Temperature | Discharge temperature | ||
|---|---|---|---|
| 25°C | -10°C | 25°C | 40°C |
| Relative Capacity | 60% | 97% | 97% |
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 (=3,100mAh) is 100%
Temperature Dependence of Charge Capacity
Capacity comparison at each temperature, measured with discharge constant current 550mA and 2.50V cut-off at 25°C after the Standard charge is as follow temperature.
| Charge temperature | Discharge temperature | |||
|---|---|---|---|---|
| 0°C | 25°C | 45°C | 25°C | |
| Relative Capacity | 80% | 100% | 100% | |
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 (=3,100mAh) is 100%.
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