Official specifications:
Model: INR18650
Size: 18.3*65.0mm
Nominal voltage: 3.6V
End-of-charge voltage: 4.20V
End-of-discharge Voltage: 2.50V
Typical Capacity: 2600mAh (0.2C discharge)
Min capacity: 2500Ah (0.2C discharge)
Weight: Max:48g
Internal resistance: Max:12mOhm (AC 1kHz)
Standard Charge: 2000mA,CCCV 100mA cut-off
Charging Time: 1.5hours(standard charge)
Quick Charge Current: 4000mA
Max Continuous Discharge Current: 25A
Operating Temperature: Charging: 0°C ~ 45°C, Discharging: -20°C~75°C
Storage: Temperature -5°C~35°C, Humidity <75%RH
Standard environmental condition: Temperature: 23±5°C, Humidity: 45-75%RH