Spot Welding Portable Mini DIY Machine for 18650 Battery Various Welding

1,750.00 EGP 1750.0 EGP 1,750.00 EGP

1,750.00 EGP

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Internal Reference: SPOT.WELDING.DIY.MINI

Portable DIY Mini Spot Welder Machine 18650 Battery Various Welding Power Supply 

NOTE: The power supply for this DIY board can use a 12V car battery, 12V lead-acid battery, or 3S, 40~70C 5000mAh Lithium battery. 


  1. Wide selection of welding power supply: lithium battery power supply or 12V car battery.
  2. The controller is controlled by a single-chip microcomputer, and the output pulse is accurate to ensure the welding quality.
  3. With LCD display screen, can display welding parameters.
  4. The welding pen and the input line are connected by U-shaped cold-pressed terminals, which is convenient for disassembly and replacement.
  5. Using automatic touch welding mode, while retaining the manual trigger interface, you can choose according to your own use.
  6. The power board uses 2 Gusi copper to increase the overcurrent capacity.
  7. using 5 300A MOS tubes, non-disassembled MOS tubes.
  8. The MOS tube driver adopts the imported special chip driver. The fastest MOS tube can be hit with 20nS. The switch is fast to prevent the explosion of the tube and the non-triode push-pull drive.
  9. The MOS drive design adds a transient diode to protect the MOS and prevent the explosion of the tube.
  10. 10AWG multi-filament flexible wire is used for the welding pen line and the input line to increase the overcurrent capacity.
  11. The controller is mainly for welding nickel-plated steel strips from 0.1mm to 0.12mm.
  12. A 25V10000uF high-frequency low-resistance capacitor is added to the power input for energy compensation, which increases welding stability.

Instructions for use:

  • Power connection: The controller comes with a 20cm long 10AWG input wire. One end has been crimped with a U-shaped terminal, and the other end has not been processed. Connect the crimped U-shaped terminal to the control power input terminal, and the other end is processed according to its power supply. Do not connect the negative electrode wrong.
  • Switch on and off: There is a power switch under the control board. After pressing, wait for 3 seconds. After the buzzer drops, the LCD lights up and the boot is complete. Press the power switch again to shut down.
  • Screen description and parameter adjustment.
  • Welding: Keep the welding pin clean. If the welding pin is polished into a round head, the welding effect can be improved. There are manual and automatic methods.


  1. Material: Metal
  2. Input line length: app.20cm
  3. Length of welding pen: app.30cm
  4. Color: Red+Blue+Black
  5. Battery: 18650 lithium battery (not included)

Package Contents:

  • 1Pc x Controller
  • 2Pcs x Welding pen
  • 2Pcs x Power input line (Red and Blue)
  • 1 Pair x U-shaped cold-pressed terminal (used to connect to input power)