PURITY: 99.6% pure nickel strip is the material you want, the nickel strip here will never corrode and come loose after welded to a 18650 cell, lithium-ion batteries, and any other circuit systems. Nickel strip is commonly used in battery building due to its ease of use in spot welding and soldering as well its high corrosion resistance over time. Nickel is magnetic at or near room temperature. The hardness of the SSPN-0023 SHONAN pure nickel strips can be spot welded to lithium batteries. Besides, the pure nickel strips here can also be used for nickel electroplating, if you are hoping to achieve the bright, shiny appearance and give your projects a nice corrosion-resistant layer, the nickel strips SSPN-0023 from SHONAN.SYSTEMS is your best choice. PURE NICKEL AND CURRENT: Choose the right standard of pure nickel strip for a specific battery pack based on the current that you would like to draw. Users can increase the current rating by increasing the series connections between each parallel group or by stacking more than one layer of pure nickel strips. LITHIUM-ION BATTERY PACK: Every e-bike or wireless electro-tool needs a rechargeable lithium-ion battery pack. These pure nickel strips can be used for spot welding battery cells directly. QUANTITY: This package comes a roll of 0.1x4 mm pure nickel strip with a length of 32 feet and a purity of 99.6 percent. We only offer pure nickel strip and test all of our strips to ensure that you are getting the high-quality pure nickel.