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yeacher 12V 18650 Lithium Battery Spot Welder Kit with 9-Level Power Control, DIY PCB Circuit Board, Nickel Sheet, and Optional Enclosure for Precision Welding

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DC 12V 18650 Lithium Battery Spot Welder DIY Kit 5MOS Spot Welding Machine PCB Circuit Board Nickel Sheet 9 Gears Output Power 
 
Description: 
&nbsp; 
Pure copper conducts electricity and heat to improve spot welding efficiency. 
&nbsp; 
Aluminum oxide copper spot welding needle ensures high current carrying capacity and durability. 
&nbsp; 
The positive and negative marks are not easy to connect wrong wires. 
&nbsp; 
High frequency capacitance, low internal resistance, high temperature resistance. 
&nbsp; 
9 gear power regulation, digital tube real-time display gear. 
&nbsp; 
&nbsp; 
Specifications: 
 
Name: spot welder suit 
&nbsp; 
Material: PCB 
&nbsp; 
Working voltage: 6.5-16V 
&nbsp; 
Working current: ＜ 20ma 
&nbsp; 
Standby power consumption: ＜ 0.5ma 
&nbsp; 
Recommended operating temperature: - 10 ℃ to 60 ℃ 
&nbsp; 
Voltage: 12.0V 
&nbsp; 
Welding current: 1700A Max 
&nbsp; 
Welding thickness: 0.1-0.3mm 
&nbsp; 
&nbsp; 
The following battery packs can be used as working power: 
&nbsp; 
12V automobile starting power supply, model 3S high magnification battery pack, three series high magnification lithium battery pack, super capacitor polymer high magnification battery 
&nbsp; 
40900 3-string battery pack, lead-acid battery with good performance above 12V 20A. 
&nbsp; 
Calculation formula: capacity X discharge rate=load capacity 
&nbsp; 
Take 4000ma aviation model battery as an example, the discharge rate is 45C (4AX45C=180A) 
&nbsp; 
&nbsp; 
Instructions: 
 
Function keys: 1, used to switch the machine, 2, used to switch gears! 
&nbsp; 
When the power is on, you need to press once to start the machine. The default is 0. Press and hold the button for 1 second to release 
&nbsp; 
When the gear is increased by one gear, the buzzer sounds and the LED lamp flashes corresponding to the gear. 
&nbsp; 
For example, in gear 3, the buzzer sounds 3 times, and the LED flashes 3 times. There are 9 gears in total. Spot weld 0.1-0.15 from gear 1 to gear 5, 
&nbsp; 
Weld 0.2 for gear 5-7 and 0.25-0.3 for gear 8-9. Press and hold the button again for about 3 seconds. It will lose power. Under the power off state, press the power on button for a short time, and the gear will return to 0 
&nbsp; 
&nbsp; 
Packing list without case: 
1 x Control board 
2 x Input cable 
2 x Soldering pen 
4 x Screw 
1 x Nickel sheet 
 
Packing list with enclosure: 
1 x Control Board 
2 x Input Cables 
2 x Soldering pens 
4 x Screws 
1 x Nickel plate 
2 x Acrylic enclosure 
8 x brass posts 
4 x Screws