<p><kse:widget data-widget-type="customText" id="1005000000542054" type="relation"></kse:widget></p><p><strong><span style="font-size:20px">12 V DIY Spot Welder Pen Portable Battery Storage Spot-Welding Machine Circuit Board Welding Equipment Spot-Welders </span></strong></p><p><br/></p><p><span style="font-size:18px"><strong>The whole set includes:</strong></span></p><p><span style="font-size:18px">1. Main circuit board*1</span></p><p><span style="font-size:18px">3.10AWG input wire*2</span></p><p><span style="font-size:18px">4.10AWG output wire with soldering pen*2</span></p><p><span style="font-size:18px">5.01*6mm nickel strip 1 meter</span></p><p><span style="font-size:18px">This spot welder circuit board can be used to weld 18650/26650/32650 and other lithium batteries,</span></p><p><br/></p><p><span style="font-size:18px"><strong>Advantage:</strong></span></p><p><span style="font-size:18px">Portable, stable, reliable and durable. Low cost, you have a car starter battery, or a high-power battery pack, you can use it when you connect it! Save the production cost!</span></p><p><span style="font-size:18px">Users need to bring their own 12V battery for power supply, and the welding current is about 90A~130A.</span></p><p><span style="font-size:18px">0.1mm~0.12mm nickel-plated sheet is easy to weld.</span></p><p><span style="font-size:18px">Please make sure your battery can have more than 90A current, otherwise it will not be able to weld!</span></p><p><br/></p><p><span style="font-size:18px"><strong>Parameter:</strong></span></p><p><span style="font-size:18px">Supply voltage: 12V-15V</span></p><p><span style="font-size:18px">Working current: 90-150A (discharge below 90A, it will not work.)</span></p><p><span style="font-size:18px">Batteries with large discharge current will directly affect the welding effect. The following batteries are recommended:</span></p><p><span style="font-size:18px">20-45ah lead-acid battery with good performance and small internal resistance (internal resistance less than 10 milliohms, discharge current greater than</span></p><p><span style="font-size:18px">90A), such as a new car starter battery!</span></p><p><span style="font-size:18px">About 3.5-5.5ah45C 3S model aircraft lithium battery pack</span></p><p><span style="font-size:18px">30-35ah capacity type 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 local rapid heating and cooling with large current,</span></p><p><span style="font-size:18px">Sufficient current supply is required, and the commonly used 0.1-0.15 nickel-plated sheet welding current</span></p><p><span style="font-size:18px">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 starting power supply, model aircraft 3S high-rate battery pack, three strings of high-rate lithium battery pack,</span></p><p><span style="font-size:18px">Hitachi 409003 series battery pack, lead-acid battery with good performance above 12V20A.</span></p><p><span style="font-size:18px">Calculation formula: capacity X discharge rate = load capacity</span></p><p><span style="font-size:18px">Take a 4000ma model aircraft battery as an example, the discharge rate is 45C (4AX45C=180A)</span></p><p><br/></p><p><span style="font-size:18px"><strong>Instructions for use:</strong></span></p><p><span style="font-size:18px">Function keys: 1, for switching the machine, 2 for switching gears!</span></p><p><span style="font-size:18px">Turn on the power and default to the first gear, press the button for 2 seconds to release,</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: the 3rd gear, the buzzer sounds three times, the LED flashes 3 times, a total of 5 gears. From the 1st gear to the 5th gear, the spot welding is strong</span></p><p><span style="font-size:18px">gradually increase</span></p><p><span style="font-size:18px">5th gear is the strongest!</span></p><p><span style="font-size:18px">After the 5th gear, press and hold the button again. It will turn off. In the off state, long pressing the button will turn it on, and the gear will return to the 1st gear.</span></p><p><br/></p>