[High quality 18650 battery spot welder] This is a high quality spot welder with fine workmanship, stable performance and long service life Small size, light weight and easy to transport Easy to use, one-touch on / off, very convenient [High Speed Lithium Battery] Once fully charged, thousands of points can be continuously welded onto 0 1-0 15mm nickel foil With its own charge management control module, you can use a power supply electric mobile to charge the spot welder [With spot welding pen] Gold plated spot welding pen, good conductivity, low contact resistance, copper pen holder with 10AWG polysiloxane wire, humanized sleeve, safe to use [Self-check function] The soldering pen will fire automatically after touching the nickel foil, and the response time is 0 8s Low power consumption design, no need to worry about the battery draining when putting on the shelves Precision welding The 6-level power output of the spot welding machine is adjustable, 1-6-1 cycles, and the welding is more precise Long press to start, view last used file, short press to add one file at a time Advanced power management and software design will not be reset or reset during welding