DIY Portable Mini Spot Welder Machine Welding Power With Pen For 18650 Battery

Feature:1: Portable spot welder with quick release welding pen.2: Small and portable size design, easy to carry.3: Built-in welding pen with gold-plated terminal, good electrical conductivity, low contact resistance.4: Thickened pure copper strip and imported MOS tube, saving energy, longer service life.5: Built-in high speed power battery, excellent charge and discharge performance, more stable.Instructions for use:Please note that the battery is fully charged before use1. On/Off - Press the button for 3 seconds, release the button after hearing the start sound, that is, on/off.2. Simply press the button. If the buzzer goes off, that's the offset. Press once to increase one speed. 1-9 cycles, the ninth speed welding strength is the highest.3. Welding operation - Starting from level 1, the equipment will start welding after 0.5 seconds, once it detects the item. Power Settings can be adjusted to suit different welding jobs. If high level enters current protection mode and restarts, USB