Lithium-ion rechargeable cell Samsung 35E 3500mAh 18650 battery cell, model INR18650-35E, produced in Korea by Samsung SDI Co., Ltd. Battery Cell Business Division

Standard discharge Capacity, Minimum 3.35Ah 

                        - Charge : 0.5C 1.7A, 4.2V, 0.02C 68mA cut off  

                        - Discharge : 0.2C 0.68A, 2.65V cut off   

                                             1C=3.4A

Charging Voltage: 4.2V

Nominal Voltage: 3.6V

Charging Method: CC to CV, constant voltage and constant current.

Charging Current:  Standard charge: 1.7A, For lifetime : 1.02A

Charging Time: Standard charge time 4h

Maximum Charge Current: 2A (not for lifetime)

Maximum Discharge Current:  8A (continuous discharge current) 

                                                13A (peak current)

Discharge Cut off Voltage: 2.65V

Cell Weight: 50g Maximum

Cell Dimension: Height : Maximum 65.25 mm 

                          Diameter: Maximum Φ 18.55 mm

Operating Temperature (for battery cell): Charge : 0 to 45°C 

                                                              Discharge : -10 to 60°C

Storage Temperature: 12 months : -20 to 25°C  

                                      3 months : -20 to 45°C 

                                        1 month : -20 to 60°C 

Features

1 Standard Charge 

      This "Standard Charge" means charge the cell at charge current of 1.7A and constant voltage 4.2V at 23°C, 0.02C 68mA cut off.

2 Standard Discharge Capacity

      The standard discharge capacity is the initial discharge capacity of the cell, which is measured at discharge current of 0.2C 0.68A and 2.65V cut off at 23°C within 1h after the Standard charge. Standard Discharge Capacity ≥ 3.35Ah

3 Rated Discharge Capacity

     The rated discharge capacity is the initial discharge capacity of the cell, which is measured at discharge current of 1C 3400mA and 2.65V cut off at 23°C within 1h after the Standard charge. Rated Discharge Capacity ≥ 3.25Ah, 97 percents of 3.35Ah 

4 Initial internal resistance

      Initial internal resistance will be gauged at AC 1k Hz afterward Standard charge. Initial internal resistance less than 35mΩ

5 lifetime

      Each cycle is an interval between the charge (charge current 1.02A) and 0.1A cut off and the discharge (discharge current 3.4A) and 2.65V cut off. 

     Capacity after 500 cycles. Capacity ≥ 2.01Ah (60 percents of Standard Capacity)