This spot welder circuit board can be used to weld 18650 \/ 26650 \/ 32650 lithium batteries. Advantages: portable, stable, reliable and durable. Low cost, own car start battery, or high-power battery pack, can be connected to use! Save production costs!Function keys: 1, for switching machine, 2 for shifting gear! Turn on the power, the default is the . Press the button for 2 seconds to release, When the gear is increased by one gear, the buzzer rings and the LED flashesfor example: in the third gear, the buzzer rings three times and the LED flashes three times. There are 5 gears in total. The spot welding strength is gradually strengthened from the 1st to 5th gear, and the 5th gear is the strongest!After the 5th gear, press and hold the key again. It will turn off. If you press the key for a long time, it will turn on. At the same time, the gear will return to the Users need to provide 12V battery power supply, welding current is about 100A ~ 200A, for the common 0.1mm ~ 0.15mm nickel plate welding is easy. Please make sure that your battery can have a current 100A, otherwise it will not be to weld!Power supply voltage: 11.5v-14.8vWorking current: 100-200a (optimal current: 150A, discharge 100A, will not work)The battery with large discharge current will directly affect the welding effect. The following batteries are recommended:36-45ah lead-acid battery with good performance and low internal resistance (internal resistance less than 10 milliohm, discharge current 100 a), such as new car starting battery!About 4000mAh 35c-8000mah 30C 3S aviation model lithium battery pack18650 battery pack with 30-35ah capacityPower requirements:Spot welding is based on the principle of high current local rapid heating and cooling, which requires sufficient current supply. Generally, the welding current of 0.1-0.15 nickel plate is about 90-150a, so the working power supply of circuit board must be or equal to 150AThe following battery pack can be used as working power supply12V automobile starting power supply, aircraft model 3S high rate battery pack, three series high rate lithium battery pack, 40900 3 series battery pack, 12V 20A lead-acid battery with good performance.Colour: blackMaterial: plasticPackage Contents:1 * Spot Welder KitOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.
