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Home / Development Boards & Control Boards / KEKK K100 Compact Handheld 12V Supercapacitor Spot Welder Control Board Module for 18650 Lithium Batteries

Attributes

Brand -
Category Electronic Components / Maker DIY / Development Boards & Control Boards
Origin -
Input Voltage 12V DC
Energy Storage Supercapacitor
Welding Material 0.1mm-0.2mm Nickel Strip
Battery Compatibility 18650 Li-ion Cells
Assembly Required Yes (DIY Kit)
PCB Material FR-4 Fiberglass
Control Method Manual Pulse Button
Enclosure ABS Plastic Case
Cable Length 1.5 Meters
Weight 250 Grams

5 reviews

A

Anonymous

Apr 05, 2026

Rating: 5/5

Safe supercap design

I like the supercapacitor approach instead of direct battery welding.

A

Anonymous

Apr 02, 2026

Rating: 3/5

Hard for beginners

Requires good soldering skills to assemble the board itself.

A

Anonymous

Mar 25, 2026

Rating: 5/5

Perfect for battery packs

Worked great for my e-bike battery project. Welds are strong and consistent.

A

Anonymous

Mar 03, 2026

Rating: 5/5

Consistent pulses

Very reliable for nickel strip welding on 18650 cells.

A

Anonymous

Feb 02, 2026

Rating: 4/5

Good value kit

Components are quality. Instructions could be more detailed for beginners.

5 FAQ

Q: Is soldering required?

A: Yes, you need to solder the components onto the PCB during assembly.

Q: Can it weld steel strips?

A: It is optimized for nickel strips. Steel may require higher power.

Q: What power adapter do I need?

A: You need a standard 12V DC power adapter with at least 2A current.

Q: Is it safe for lithium batteries?

A: The supercapacitor design minimizes heat transfer to the cells.

Q: Does this kit include all components?

A: Yes, all electronic components and the case are included.

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