Copper point welding blade 16 / 25 squares for battery 18650

Copper spot welding pen is a professional tool designed for fast and efficient welding for DIY projects and small-scale production. This pen is suitable for those interested in electronics repair, battery pack assembly, or joining metal parts. The copper main body of the pen ensures high-quality connections and high energy transfer, making the copper spot welding pen undoubtedly the most reliable solution in these fields.

Copper spot welding pen – main features

• Pure copper base — Made from high-quality red copper, which provides a power transfer rate 3-5 times faster than brass. This material allows for reduced heat loss during high current operation.
• Hydraulic fastening — All contacts are fastened using a hydraulic system principle rather than standard screws. This guarantees a strong connection between the cable and the pen body, thus avoiding poor contact.
• Long service life — The pen can continuously perform 100+ welds in a row without shortening its contact part.
• Reliable welding needles — The set includes 2 pcs. of 3x50mm welding needles, which are smoothly attached to the pen body.
• Heat-insulating wrap — 2 pcs. of heat-resistant wrap (heat shrink skin) protect hands from heat and electric shock.
• Compact size — The pen is easy to carry and use with one hand, perfect for DIY enthusiasts and small-scale project builders.
• Universal compatibility — Works with 18650 battery packs and is suitable for both 16 and 25 square welding variants.

Technical specifications

• Main material: Red copper (pure copper)
• Energy transfer rate: 3-5 times higher than brass
• Fastening system: Hydraulic
• Welding needle size: 3x50mm
• Heat-resistant wrap: 2 pcs.
• Welding pen tips: 2 pcs.
• Maximum consecutive welding time: 100+ connections
• Model variants: 16 and 25 square versions

Who is it suitable for and how to use it?

The copper spot welding pen is ideal for those involved in battery pack assembly, electronics repair, the aforementioned projects, and professional small-scale welding work. When using this pen, it is very important to secure the welding needles with hydraulic pliers rather than screws – this ensures optimal contact and a high-quality connection. The pen works with 18650 battery packs and is suitable for both beginners and experienced welders. Regularly check the contacts and replace the needles when they wear out.

Buyer questions

Q: How long do the contacts of this pen last?
A: The copper spot welding pen can perform more than 100 welds without a significant decrease in quality. However, the contacts will gradually wear out depending on the intensity of use. It is recommended to periodically check the contact quality and replace the needles when they wear down.

Q: Can regular screws be used instead of hydraulic fastening?
A: Not recommended. Hydraulic fastening is important for the functionality of the copper spot welding pen. It ensures better contact and lower heat generation. Screw fastening can weaken the connection and reduce welding quality.

Q: Does this pen meet international safety standards?
A: The pen is made of safe materials and includes a heat-insulating wrap. However, as with all electrical tools, careful operation and adherence to safety instructions are required. The hydraulic fastening and red copper ensure stable and safe operation.

The copper spot welding pen is an essential tool for anyone interested in electronics and metal welding work. Its quality, durability, and reliability make it an ideal choice for both professionals and beginners. By purchasing this pen, you will have the most reliable solution for all your welding needs.

Sources: Spot welding – technical explanations | TopSmart store