DIY Portable Mini Spot Welder | 8-24V Voltage Display | Specifically Designed for 18650 Lithium Battery Welding 🔧 Product Introduction: This high-precision portable spot welder supports 99 levels of precise power adjustment. Suitable for continuous welding of nickel sheets and thousands of weld points, its intuitive and flexible operation makes it an invaluable tool for DIY lithium battery pack building, repair, and assembly! ✨ Key Features: ✅ 99-level precise power adjustment — Achieves higher precision welding, adapting to various welding needs ✅ Three working modes — Normal mode / Enhanced mode / Super strong mode, one-button switching ✅ Real-time status display — 3-digit digital tube alternately displays the current power level and real-time voltage ✅ Powerful output — Employs 6 MOSFETs, peak current up to 1800A, capable of welding 0.1-0.2mm nickel sheets, resulting in strong and aesthetically pleasing solder joints ✅ Multi-power supply support — Compatible with various common power supplies, flexible and convenient 📌 Applicable power supply types: 1️⃣ Lead-acid batteries — Such as 2×20Ah electric vehicle batteries, 36-45Ah car starter batteries 2️⃣ Model batteries — 3S 4000mAh 35C, 3S 5000mAh 25C, etc. 3️⃣ Car starter — 11.5-14.8V 36-60AH, recommended internal resistance between 2.5-7 milliohms 4️⃣ Self-assembled battery pack — Voltage 11.5-14.8V, total internal resistance <7 milliohms 📊 Technical Specifications: Operating Voltage: 8-24V Operating Current: <20mA Peak Welding Current: Up to 1800A Standby Power Consumption: <0.5mA Welding Thickness: 0.1-0.2mm Nickel Sheet Temperature Limit Protection: 175°C 📦 Package Contents: 1 set of spot welding machine kit (outer shell has a brown protective film, please remove before installation)