⭐Compatible with multiple battery types for wide applications. Welding thickness : nickel - plated 0.2mm - pure nickel 0.15mm. The welding head is locked tightly. After tightening the screws, you need to gently pry open the copper sheet to replace the welding head.

⭐Compatible with multiple battery types for wide applications. Welding thickness : nickel - plated 0.2mm - pure nickel 0.15mm. The welding head is locked tightly. After tightening the screws, you need to gently pry open the copper sheet to replace the welding head.