I2C DL-03 Spot Welding Machine

Soldering a nickel tab straight onto a battery cell puts heat where it should never go. A spot welder joins the metal with a short pulse of current instead, which is why the I2C DL-03 sits on benches that rebuild phone batteries.

The listing describes adjustable power levels for different materials and thicknesses, automatic and manual triggering, and fine welding pins for tight areas. It's aimed at battery tabs, nickel strips, grounding points on boards and small metal contacts. The box contains the host, a spot welding pen, a power cable and a nickel sheet.

When to reach for it

• A battery flex tab that came loose from the cell.

• Broken nickel strips during a pack rebuild.

• Weak grounding points on a board.

• Small metal contacts that won't take solder.

Tips

Test the power level on scrap nickel first, then step up until the weld holds when you pull it. Keep the pins clean and press evenly.

The listing doesn't give output power, voltage or plug type, so check before you order.