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Handheld battery spot welder with brass welding pen and 1.8 inch colour screen

BFKK

BFKK 5000mAH Double Pulse Handheld Spot Welder 0.1-0.25mm

SKU CH-S1A0-60SSC

Handheld spot welder with double-pulse welding for 0.1–0.25 mm nickel, iron, stainless and aluminium sheets, powered by a 5000 mAh battery that also works as a power bank

  • Double-pulse welding cleans oxide layer for stable joints
  • 5000mAh A-grade batteries deliver thousands of welds per charge
  • Four combination gears adjust output for 0.1-0.25mm material thickness
  • Detachable brass pen tip replaces without buying new pen
  • 8 inch colour LCD shows voltage, temperature and warning indicators

Portable Battery Spot Welder

The BFKK handheld spot welder runs on two built-in 5000mAH A-grade cells and delivers double-pulse output for 0.1-0.25mm nickel, iron, stainless steel and aluminium sheets. A 1.8 inch colour LCD shows voltage, temperature, preheat, pulse and interval timing plus fault warnings. The brass welding pen has a replaceable tip so only the head needs changing if it wears.

Battery Pack Builders and Field Repairs

Makers assembling 18650 packs or repairing nickel-strip tabs will appreciate the four combined gear settings and the ability to weld thousands of spots per charge. The unit also functions as a power bank for phones or tools. Users who need to join thicker plate, require continuous mains duty or want automated CNC integration should look at a bench-top transformer welder instead.

Sustained Use Thermal Behaviour

Double-pulse firing cleans the oxide layer on the first pulse and completes the weld on the second, reducing spatter and keeping energy output consistent across long sessions. The on-screen temperature readout and over-temperature warning let the operator pause before the batteries overheat. Brass pen construction resists heat buildup at the contact point, maintaining stable resistance during repeated spot sequences.

Highlights

  • Double-pulse welding cleans oxide layer for stable joints
  • 5000mAh A-grade batteries deliver thousands of welds per charge
  • Four combination gears adjust output for 0.1-0.25mm material thickness
  • Detachable brass pen tip replaces without buying new pen
  • 8 inch colour LCD shows voltage, temperature and warning indicators

Specifications

No published specifications for this item yet.

Questions about this item

Does this spot welder need an external power supply or can it run on its built-in 5000mAH batteries?

It runs on two built-in 5000mAH A-Grade batteries that can deliver thousands of welds per charge and also function as a power bank.

Will the 0.1-0.25mm welding thickness range handle the 18650 nickel strips I already use?

Yes, the four combination gears adjust from .1 to .25mm, covering typical 18650 nickel-strip thicknesses for iron, stainless steel and nickel sheet.

What should I watch on the 1.8 inch LCD to confirm a good weld?

The screen shows welding status, battery voltage, temperature, preheat time, pulse time, interval time and warning indicators for over-temperature, low voltage or short circuit.

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