5500mAH 5-speed Portable Automatic Spot Welding Machine USB Charging

Features 5 speedpower using fully automatic detection welding technology Sound and light indicationSeparate copper welding pen high temperature resistance oxidation resistance and good electrical conductivity Intelligent safety design It will automatically shut down after 5 minutes of non operation cut off the output and save energy Specification Product model portable electric welding machine M1Battery Rechargeable polymer lithium batteryBattery capacity 5500mAHOutput voltage 4 2V MAX Input voltage 5V 1AOutput current 649A MAX Design current 1200A MAX Input interface USBNickel belt thickness 0 1 0 12mmPackage included 1 x Spot Welding Machine1 x Separate welding pen1 x USB charging cable1 x Nickel sheet1 x screw nut