12V Spot Welder for 18650 Lithium Battery DIY Kit Power Adjustable Digital

12V adjustable digital spot welder DIY kit designed for welding nickel strips onto 18650 lithium battery cells and battery packs. Suitable for DIY battery assembly, repair, electronics projects, and workshop use.

• 12V DC operation
• Adjustable welding power
• Digital control/display
• Suitable for 18650 lithium battery pack building
• Ideal for nickel strip spot welding

Note: Use with a suitable 12V high-current power source and follow proper lithium battery safety procedures.