First of all: BIC battery has been deeply involved in cylindrical technology for 20 years, and it is also a leading brand in the industry in China. In 20 19, BIC battery began to develop large cylindrical batteries with "all-pole ear" technology.

In addition, the tab is a metal conductor that leads the positive electrode and the negative electrode out of the battery cell. Then with the help of "all-pole-ear" technology, large cylindrical batteries can make up for their lack of power performance and realize faster charge and discharge.