Double-pulse spot welding technology is safe, firm and more reliable: two pulses are released during welding, one pulse cleans the oxide layer on the surface of the weldment to reduce the phenomenon of spark splashing, and the other pulse is welded to ensure the consistency of energy output and effectively improve the welding reliability. 1200A strong current discharge, stable welding: it can weld nickel/iron/steel sheet with thickness of 0.1-0.25mm, etc., with firm welding and excellent solder joints. Adjustable output, precise control: self-defined preheating, pulse, interval and connection times make welding more stable and firm. Copper spot welding pen, spot welding is more professional: the spot welding pen head adopts replaceable design! There is no need to replace the whole welding pen, which greatly saves the use cost. High-rate power battery, safer and more stable: equipped with two high-rate power lithium batteries, it can realize accurate and efficient output control. Intelligent temperature control protection for overheating and automatic power off: when the system detects that the temperature is higher than 60 degrees Celsius, it will stop charging the internal small battery and turn off the spot welding function, which is safer and more worry-free. Safe and steady, without shaking the crazy point: the back comes with a bracket, so it is more convenient to watch when using and adjust the parameters. 1.8-inch TFT high-definition LCD color screen: equipped with 1.8-inch high-definition TFT display screen at the same time, it realizes simple, beautiful and intelligent human-computer interaction interface. Small and portable, easy to operate: it is about the size of a mobile phone, more portable, and takes up no space when going out for maintenance and carrying. Product name: portable intelligent color screen