●easy welding nickel plated copper strip
 Copper strip is a most function-price ratio conductive material, but it’s difficult to weld for it’s high conductivity and high thermal performance; it can be improved by adding tin, nickel, phosporus and  etc.
After equilibrium between  conductive and welding performance, it can be used on battery;
Now it’s vast applied by international tycoon such as Samsung, Sony and TTI.