3.6V 18500 size Cylindrical Li-Ion Cell Lighter weight and higher energy density than any other rechargeable cell 18500 cell is a little shorter than the 18650 cell, and it is perfect for building compact size packs and high capacity packs for RC aircraft, RC cars, or camera battery. 1.   Model Name: NCR18500A, w/ Tabs 2.   Typical Capacity: 1600mAh 3.   Nominal Voltage: 3.7V 4.   End Voltage: 2.5V 5.   Charging Voltage: 4.2V 6.   Charging Time (Std.): 3.0hours 7. Dimension(Max.): (D)18.15*(H)49.36mm