8000W Portable Spot Welder Pen Kit for 18650 Battery & Nickel Strip

8000W DIY Portable Spot Welding Machine Pen Kit

Take your battery pack builds to the next level with this compact yet powerful 8000W Automatic Spot Welding Pen Kit. Designed for DIY enthusiasts and electronics hobbyists, this mini spot welder delivers professional-grade welds on 18650 battery packs and nickel strips — all from a device small enough to fit in your pocket. Made in Mainland China.

Key Features

• High Power Output: 8000W output handles nickel strip welding with ease, producing clean, firm solder joints every time.
• Portable & Compact: Pocket-sized design makes it easy to carry to your workshop, garage, or job site — weld wherever you need to.
• DIY Assembly Kit: Perfect for makers and builders who love hands-on projects. Assemble the kit yourself and learn the mechanics as you go.
• Versatile Nickel Strip Compatibility: Supports 0.1mm, 0.15mm, 0.2mm, 0.25mm, and 0.3mm nickel strip thicknesses for a wide range of battery assembly applications.
• Adjustable Current: Fine-tune the welding current to match different material thicknesses for optimal results.
• Replaceable Welding Pins: Worn-out tips are easy to swap out, extending the life of your welder significantly.
• Long Battery Life: A single full charge delivers thousands of spot welds before needing a recharge.
• Beginner-Friendly Operation: Simple controls mean you can get started quickly with minimal learning curve.

Specifications

• Power Output: 8000W
• Compatible Strip Thickness: 0.1 / 0.15 / 0.2 / 0.25 / 0.3mm nickel strip
• Primary Use: 18650 lithium battery pack assembly
• Welding Pins: Removable and replaceable
• Current: Adjustable
• Country of Origin: Mainland China

⚠️ Note: This spot welder is specifically designed for battery spot welding. It is not suitable for welding copper, gold, silver, or other metals. Dimensions may vary by ±1–2cm due to manual measurement.

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Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What battery types is this spot welder kit designed for?

A: This 8000W portable spot welding pen kit is specifically designed for assembling 18650 lithium battery packs using nickel strips. It is not intended for welding copper, gold, silver, or other non-battery metals.

Q: What nickel strip thicknesses does this spot welder support?

A: The spot welder supports nickel strips ranging from 0.1mm to 0.3mm in thickness, including 0.1mm, 0.15mm, 0.2mm, 0.25mm, and 0.3mm — making it highly versatile for various battery pack assembly projects.

Q: Is this spot welder kit ready to use out of the box?

A: This is a DIY kit that requires assembly. It's ideal for makers who enjoy hands-on builds. The operation is straightforward once assembled, and the adjustable current makes it easy for beginners and experienced users alike.

Q: How long does a charge last on this portable spot welder?

A: When fully charged, this compact spot welder can produce thousands of spot welds, making it efficient for large battery pack assembly sessions without frequent recharging.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.