<p><kse:widget data-widget-type="customText" id="1005000000806197" type="relation"></kse:widget><br/></p><p><strong><span style="font-size:20px">12V DIY Spot Welder PCB Circuit Board 18650 Lithium Battery Assembly Control Board Portable Handheld Spot Welding Machine</span></strong></p><p><br/></p><p><span style="font-size:18px"><strong>Description:</strong></span></p><p><br/></p><p><span style="font-size:18px">The circuit board of this spot welding machine can be used for welding 18650/26650/32650 lithium batteries. Advantages: portable, stable, reliable, and durable. Low cost,</span></p><p><span style="font-size:18px">I have a car starter battery or a high-power battery pack, which can be used after connecting it! It saves production costs!</span></p><p><br/></p><p><span style="font-size:18px"><strong>Function keys:</strong></span></p><p><span style="font-size:18px">1, used to switch the machine, 2 used to switch gears!</span></p><p><span style="font-size:18px">When the power is turned on, the default is the first gear. Press and hold the button for 2 seconds to release it.</span></p><p><span style="font-size:18px">The gear is increased by one gear, and the buzzer sounds and the LED flashes corresponding to the number of gears.</span></p><p><span style="font-size:18px">For example: 3rd gear, the buzzer beeps three times, and the LED flashes three times</span></p><p><br/></p><p><span style="font-size:18px">There are 5 gears in total. From gear 1 to gear 5, the spot welding strength is gradually strengthened, and gear 5 is the strongest!</span></p><p><span style="font-size:18px">After the 5th gear, press and hold the button again. It will power off, and when the power is off, press and hold the button to power on, and the gear will return to the first gear at the same time.</span></p><p><span style="font-size:18px">Users need to bring their own 12V battery for power supply, the welding current is about 100A~200A, and it is easy to weld the common 0.1mm~0.15mm nickel plated sheet.</span></p><p><span style="font-size:18px">Please make sure that your battery can have a current greater than 100A, otherwise you will not be able to weld!</span></p><p><br/></p><p><span style="font-size:18px">Power supply voltage: 11.5V-14.8V</span></p><p><span style="font-size:18px">Working current: 100-200A (the best current: 150A is less than 100A discharge, it will not work)</span></p><p><span style="font-size:18px">A battery with a large discharge current will directly affect the welding effect. The following batteries are recommended:</span></p><p><span style="font-size:18px">36-45ah battery with good performance and small internal resistance (internal resistance is less than 10 milliohms, discharge current is greater than 100A), such as a new car starter battery!</span></p><p><span style="font-size:18px">4000mah35C-8000mah30C 3S model airplane lithium battery pack</span></p><p><span style="font-size:18px">30-35ah capacity 18650 battery pack</span></p><p><br/></p><p><span style="font-size:18px"><strong>Power requirements:</strong></span></p><p><span style="font-size:18px">Spot welding is welded by the principle of rapid local heating and cooling by high current, and requires sufficient current supply. Generally, 0.1-0.15 nickel-plated sheets are commonly used.</span></p><p><span style="font-size:18px">When welding, the current is about 90-150A, so the working power of the circuit board must be greater than or equal to 150A.</span></p><p><span style="font-size:18px">The following battery packs can be used as a working power source</span></p><p><span style="font-size:18px">12V car starter power, 3S high-rate battery pack for model airplane, three-string high-rate lithium battery pack, Hitachi 409003 string battery pack,</span></p><p><br/></p><p><span style="font-size:18px"><strong>Package includes:</strong></span></p><p><span style="font-size:18px">1 circuit board (V5) 1 piece</span></p><p><span style="font-size:18px">2 soldering pens 2</span></p><p><span style="font-size:18px">3 input wires 2</span></p><p><span style="font-size:18px">4 screws 3 sets</span></p><p><span style="font-size:18px">5 buzzer 1</span></p><p><span style="font-size:18px">6 capacitors 1</span></p><p><span style="font-size:18px">7 nickel sheet 1 meter</span></p><p></p>