Description: Feature: 1. High Carrying Capacity: This high current spot welding pen has a built-in imported MOS tube, which can carry 550A current and has a powerful welding capacity. It adopts integrated design, you connect the handheld spot welder to the battery and you can use it. The simple and easy to use operation method makes your welding work faster and more efficient. 2. Removable Copper Pin: This handheld spot welder is designed with removable copper pin, the expandability and maintainability of the welder is improved. 3. 99-Speed Adjustment: This battery spot welding machine has 99-speed infinite adjustment, which makes it more convenient to operate. With this design, it can meet your different welding needs. Precise welding ability, help you easily cope with a variety of welding work. 5. 4. Trigger Button: This point welding machine has a trigger button, just press this button to complete a welding, very suitable for one-hand operation. 5. LED Indicator: This spot welder has a built-in LED indicator, which can keep you informed of its working status. You will operate with more peace of mind and can also grasp the current and other details in real time, making your welding safer and more reliable. It is compatible with 18650 batteries and 21700 battery packs. It is versatile, lightweight and portable and can be used in various fields such as electrician, metal welding and construction. Specification: Certification: NONE Origin: Mainland China Model Number: Spot Welding Machine Max. Welding Thickness: 0.1mm Dimensions: 170 x 25mm Weight: 150 g Usage: for spot welding Wire length: 350mm Wire specification: 12AWG silicone wire Power interface: Copper lug /EC5(optional) Operating voltage: 12V-16.8V Spot welding current: 80A-150A Power module: Imported 550A MOS tube Case material: high temperature resistant nylon Spot welding material: 0.1mm nickel-plated tape Welding needle specification: 3 x 1.5 x 40mm professional alumina copper welding needle Whether the copper needle can be replaced: Yes Material: ABS+ metal Package Included: 1 x Welding Machine Needle (Interface as your choice) Key points of use: 1. It is recommended to use 12V, 20AH-60AH lead-acid battery with good performance, or high-rate 3-string or 4-string lithium battery pack, or emergency starting power supply for automobile as power input (must have good performance, at least enough to start the automobile, voltage range: 12V-16.8V). 2. The interface should be firm, the wire is not extended at will, spot welding from a small power slowly adjusted upward enough to avoid excessive current affecting the performance of MOS tube. Do not reverse connect the input electrode and do not exceed the specified voltage range 3. It is recommended to weld nickel-plated steel strip within 0.1mm, and the effect of 0.2mm can be obtained by stacking two times of welding. Cannot weld pure nickel or copper aluminum, etc