[One-Handed Precision Spot Welding · Hands-Free, Double Efficiency]: The battery spot welder features an integrated ergonomic design, eliminating the need for a traditional soldering iron. Small battery packs can be welded one-handed, increasing DIY repair efficiency by 30%. [Real-Time LCD Display, Dual Modes for Various Scenarios]: The welder's LCD screen displays preheating/trigger time/temperature in real time, with dual-mode icons automatically highlighted. Automatic mode intelligently matches mobile phone/Bluetooth battery cells, while manual mode precisely controls the welding of small battery packs, supporting 0.1-0.2mm nickel-plated thin sheets. [Modular Design Reduces Consumables Costs by 40%]: The battery spot welder's innovative replaceable spot welding pin design reduces replacement costs. This mini spot welder is suitable for home or outdoor use. [Dual-Core Safety Protection, Worry-Free Welding]: The spot welder features a unique safety system: a red light automatically illuminates when the battery voltage drops below 3.2V; a blue light automatically cuts off welding when the temperature exceeds 65°C. This dual protection eliminates the risk of over-discharge/overheating and preserves the battery's lifespan. It's DIY kits, needs to finish by yourself. (No spare needle) Color: Black Material: Plastic+Metal Package Contents: 1 * welding machine 1 * 2-meter nickel-plated plate 1 * Type C charging cable 1 piece * sandpaper