Sell ✵Mini Spot Welder Portable Battery DIY Transistor best price

100% brand new and high quality Feature: 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, welding parameters can be displayed. 4. The soldering pen and the input wire are connected through U-shaped cold-pressed terminals, which is easy to disassemble and replace. 5. Use automatic butt welding mode, while retaining the manual trigger interface, you can choose according to your own use. 6. The power board uses 2 strands of bronze to increase the overcurrent capacity. 7. Use 5 300A MOS tubes, non-disassembly MOS tubes. 8. MOS tube driver adopts imported special chip driver. The fastest MOS tube can reach 20nS. The switch is fast and can prevent the explosion of electronic tube and non-triode push-pull drivers. 9. MOS driver design adds a transient diode to protect MOS and prevent lamp explosion. 10. Use 10AWG multifilament soft wire for soldering pen wire and input wire to increase the overcurrent capability. 11. The controller is mainly used for welding 0.1mm to 0.15mm nickel-plated steel strip. 12. A 25V10000uF high-frequency low-resistance capacitor is added to the power input terminal for energy compensation, thereby improving welding stability. Only the spot welder kit, does not include the demonstration of other accessories in the picture. Instructions for use: 1: Power connection The controller comes with a 20cm long 10AWG input cable. A U-shaped terminal is crimped on one end, and the other end is unprocessed. Connect the crimped U-shaped terminal to the control power input terminal, and the other end is processed according to its own power supply. Do not connect the negative pole incorrectly. 2: Open and close There is a power switch under the control panel. After pressing, wait 3 seconds. After the buzzer drops, the LCD lights up and the startup is complete. Press the power switch again to turn off. 3: Screen description and parameter adjustment. 4: Welding Keep the solder pins clean. If the welding needle is polished into a round head, the welding effect can be improved. There are manual and automatic methods. Specification: material: metal Input line length: about 20 cm/7.87 inches Soldering pen length: about 30cm / 11.81in Color: red + blue + black Battery: 18650 lithium battery (not included) Quantity: 1 set Package Contents: 1 x controller 2 x welding pens 2Pcs x power input line (red and blue) 1 pair x U-shaped cold-pressed terminals (used to connect to input power) Multiple heat shrinkable tubes for shrinking the power input line Note: 1. Due to lighting effects, monitor's brightness/contrast settings etc,there could be some slight differences in the color tone of the pictures and the actual item 2.If you have problem of the item, please contact us we will do our best to resolve the problem for you