Cylindrical Battery Cell

Cylindrical cell 18650 is the most common specification. The single cell is mainly composed of positive electrode, negative electrode, diaphragm, positive electrode and negative electrode collector, safety valve, over current protection device, insulating part and shell. In the past, steel shells were mostly used , but currently aluminum shells are the dominant type. The dimension of 18650 cylindrical cell is widely used in kinds of consumer electronics products. Besides, we can also meet customized specification of various cylindrical cell, such as 14500, 21700, 26650, 32650, 32700 etc.

Cylindrical cells have good mechanical properties. Compared with prismatic and pouch cells, closed cylinders cell can obtain the highest bending strength under similar dimensions. in addition, its sealing performance is good and less likely to explode. The form is easy to control to avoid security incident,. It can also greatly reduce the self-consumption of the cells, increase the cells life, and can completely reach the level of international standards