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PCB Circuit Board Welding Equipment 12V Portable Mini DIY Battery Energy Storage Welding Machine 18650/26650 Spot Welding Pen Features:Lightweight and portable, stable and reliable, wear-resistant, long service life.Through the output of the MOS tube, this energy will be concentrated at the end of the soldering pen and heated through a short circuit.Firmly fuse the nickel sheet to the battery.And it is precisely controlled by the microcontroller program without triggering the switch.It is fixed with screws, which is more stable and reliable.The welding current is about 90-130A, which is more than enough to weld an ordinary 0.1mm-0.12mm nickel plate.Upgrade to automatic trigger design, no longer need to press the button for a long time, completely free your hands.Power Requirements:It is forbidden to use farad capacitors for power supply, and it is forbidden to use lead-acid batteries or lithium battery packs of 60A and above.System voltage: 12V-14.6V (capacity X rate = must be greater than 150A)Current requirements: Instantaneous output above 150A (such as car starting power supply, 3S RC high-power battery pack, 20A lead-acid battery with good performance above 20A)The battery pack that can start the car can basically meet the power supply requirements of this circuit.The following battery packs can be used as operating power sources:1. 12V car starting power supply2. 3S type high rate battery pack3. 3 series high rate lithium battery pack4. 40900 3-string battery pack5. 12V 20A and above lead-acid batteries with good performanceSwitch function: long press the switch for 1.5 seconds to start (green light flashes, output low power spot welding pulse every 3 seconds), long press the switch for 1.5 seconds (blue light flashes, output medium power spot welding pulse every 3 seconds), press the switch for 1.5 seconds ( The red light flashes, and the high-power spot welding pulse is output every 3 seconds) Press and hold the switch for 1.5 seconds to shut down.Specification:Type: circuit boardColour: BlackSystem voltage: 12V-14.6VWorking current: 90-150ASwitch function: press the switch for 1.5