DH20 Pro handheld DIY spot welder mini spot welder or quick-release pen

features: 1: Portable spot welding machine with quick-release welding pen. 2: Small and portable size design, easy to carry. 3: Adopt integrated gold-plated soldering pen terminal, with good conductivity and low contact resistance. 4: Thickened pure copper strip, imported MOS tube, energy saving, longer service life. 5: Built-in high-rate battery, excellent charge and discharge performance, more stable. Please note that: This product is not equipped with a charger. You can use a mobile phone charger to charge this product, so you can use this product normally regardless of whether you use 110v voltage or 220V voltage in your country. Specifications： Host size: 103