General description The 32PCS Welding Needle set is designed for efficient and precise spot welding, particularly in the production of various battery types including Ni-, Ni-Cd, polymer, and lithium batteries. These welding needles are made from alumina copper, ensuring excellent electrical and thermal conductivity, which helps in achieving clean and beautiful welding points while avoiding issues such as electrode sticking and virtual welding phenomena. Technical specifications Material: Alumina copper Length: 40mm Package Contents: 32x Welding Needle Measurement allowed error: +/- 1-3 cm Usage Ideal for spot welding between nickel strips, nickel plated steel sheets, and coated steel strips in battery production. Applicable in the production of connectors, cores, and lead sheets for various battery types.