We offer the battery packs nickel tabs, in order to facilitate the production of lithium battery pack, usually we directly use 4P pure nickel belt 18650 battery pack parallel or series, rather than the use of nickel strip single welding 18650 battery, which will greatly save welding time, but also make our battery pack more beautiful, the most important thing is to make the battery pack more safe, prevent 18650 battery leakage, extend the life of the lithium battery pack.