Long click more than 3 seconds to power on the spot welder,after spot welder powered on,try different gears from low to high,we suggest use gear 14 or 15 to welding 0.12mm thickness nickel plated strip. The thickness of the solder needs be thicker than the nickel strip and make sure the nickel strip and the battery surface shold be clean and close contact with each other. When welding, press down the soldering pin lightly,can’t be pressed hard,the harder you press the poor welding effort will be,when detects the welding pin is placed,start welding. The following welding is the wrong method:

The spot-welding machine has a built-in high-rate lithium battery, which is different with the mobile phone battery. The high-rate lithium battery can discharge with high current, so if it is not used for a long time, it may cause the battery voltage too low to shut down, and serious may cause battery damage. We recommend charging spot welder to about 80% for storage every 2-3 months

You can disconnect charging wire (be sure to remove the charging wire before reset),then click the “RST” hole next to the charging port to reset the spot welder. After rest,you can try to power on or insert charging wire to charge spot welder.