1、FLEXIBLE AND DURABLE PEN: The terminal of the pen is gold plated and can pass through higher currents. 8mm spot welding special copper possess ultra low resistance, oxidation resistant. The length of the pen is 40cm, which is flexible and convenient to use 2、LARGE BATTERY CAPACITY: Spot welding machine with 5000mAh large capacity, built in rechargeable 2 electric power lithium battery, environmental protection. Type C 2A input, fully charged in about 2 hours, can also be used to charge other devices 3、PROTECTION MEASURES: Portable spot welding machine has perfect overcharge and overtemperature protection function, short circuit protection function. With a unique overheat protection device, automatically cut off the power when overheating occurs, and automatically shut down without any operation, so that you can use safer 4、FLEXIBLE AND ADJUSTABLE: The preheating, interval and pulse parameters of the main interface can be adjusted according to your situation 5、WITH INDICATOR LIGHT: When the pen is connected to the nickel sheet, the MOS tube will automatically output. Equipped with indicator lights that automatically turn off at low voltage to protect the battery Item Type: Mini Spot Welder Battery Capacity: 1 x 3.7V polymer lithium battery 5000mAh Product Screen: 1.8in color LCD Welding Pen Wire Thickness: 8AWG Welding Current: 6-1200A Overcurrent Protection: 1.12KA Full Charge Time: 2 Hours Endurance: 800-2000 Times Battery Cycle Life: 1000 Cycles Standby Current: 20uA Theoretical Standby: 2.5 Years or more Storage Temperature And Humidity: 55℃ 50% Maximum limited Charging: 5.2V 2.1A Discharge: 5V 2.4A maximum Support Welding: 0.25mm Nickel sheet, iron sheet, stainless steel Welding Time: Several milliseconds Maximum Welding Thickness: Approx. 10mm / 0.39in 1 x Spot Welder 1 x Data Cable 2 x Welding Pen 20 x Nickel Sheet