Feature: 1. LCD display interface, more intuitive display data, you can see the data clearly. 2. New driver design can provide bigger drive current and quicker on/off speed. 3. Re-layout of components, more reasonable PCB design, making everything easy to operate. 4. Equipped with 3 working modes, stop, manual, and auto, easy to switch mode according to your demands. 5. Stop: the controller can not perform welding operation. 6. Manual: welding by external trigger switch. 7. Auto: it will automatic welding when the soldering pen touching the nickel sheet. 8. Suitable for nickel sheet with the thickness from 0.1mm to 0.12mm, or it may burn out if exceeds this range. 9. Widely applications: 10. Suitable for 4000-6000mAh, 45C-60C 3S model airplane battery. 11. Suitable for 12 V car battery from 25-40ah, requires fine performance and small internal resistance. 12. Suitable for 30-35ah 12 V capacity lithium battery-pack. 13. Note: Can not be used for super-capacitor. Specification: This is a kind of quality spot welding tool set, include 1pcs mini spot welding machine, 1 pair of welding pen and 2pcs power lines. LCD display interface, more intuitive display data, you can see the data clearly. Equipped with 3 working modes, stop, manual, and auto, easy to switch mode according to your demands. Suitable for nickel sheet with the thickness from 0.1mm to 0.12mm, or it may burn out if exceeds this range. You can have a try. Features: LCD display interface, more intuitive display data, you can see the data clearly. New driver design can provide bigger drive current and quicker on/off speed. Re-layout of components, more reasonable PCB design, making everything easy to operate. Equipped with 3 working modes, stop, manual, and auto, easy to switch mode according to your demands. Stop: the controller can not perform welding operation. Manual: welding by external trigger switch. Auto: it will automatic welding when the soldering pen touching the nickel sheet. Suitable for nickel sheet with the thickness from 0.1mm to 0.12mm, or it may burn out if exceeds this range. Widely applications: Suitable for 4000-6000mAh, 45C-60C 3S model airplane battery. Suitable for 12 V car battery from 25-40ah, requires fine performance and small internal resistance. Suitable for 30-35ah 12 V capacity lithium battery-pack. Note: Can not be used for super-capacitor. Specifications: Name: Spot Welding Tool Set Material: plastics+metal Welding machine size: 85 * 50 * 30mm / 3.35 * 1.97 * 1.18in Item weight: 167g / 5.89ounce Package size: 138 * 85 * 75mm / 5.43 * 3.35 * 2.95in Package weight: 199g / 7.02ounce Packing List: 1 * Controller 2 * Welding Pen 2 * Power Line 1 * Guideline Package List: 1 * Controller 2 * Welding Pen 2 * Power Line 1 * Guideline