4 pieces of LI-ION 3.7V NCR 18650B

Capacity (Ah): 3.4 Ah ( 3400mAh ) Charging Voltage (V): 4.2 V Energy (Wh): 12.2 Wh Energy Density (Wh/L): 730 Wh/L Nominal Voltage (V): 3.6V-3.7V Weight (g): 46 g Diameter (mm): 18.06 mm ( /- 0.03 mm) Height (mm): 65 mm ( /- 0.03 mm) Max. Continuous Discharge rate: C Rating 2C (Maximum load/current 6.8A) Top (positive side): Flat top Protected?: No, this battery is Unprotected Model-Part No: NCR18650B