Portable Welding Machine for Painting Replica Figurine and HobbyOOTDTYfeatures: The spot welder is developed for DIY or simple battery welder. It is suitable for stand-alone or simple welding welding, single battery welding or rechargeable battery. Small size, lightweight and easy to carry. The spot welding machine can be powered by 2s, 3s or 4s lithium batteries, and the supply voltage should be between 6.5v and 16v, otherwise the board components may be damaged. It can restore peak performance. It is best to use it in a warm room, refill the power in time, and turn off the power when the power is low. Specification: Material: PCBomesize: 5.3x10.7cm/2.09x4.21inches Package Includes: 1 x Mini Spot WelderNote: please allow 0-1mm errors due to manual measurement, please make sure you do not mind before ordering.