Features: With 6 level output power adjustable, you can adjust it by the adjusting button according to your different needs. Power supplys function: This welding machine also can be used to supplys power for your mobilephone. Suitable for precision welding like lithium battery nickel sheet, nickel mbilephone battery, stainless steel sheet, stainless steel sheet, etc. Built-in large-capacity lithium battery which can providing long welding time, when no power can be recharged in time, give you a better using experience. Portable design, easy to carry and store, you can take it anywhere you need to use it. Suitable for 18650/26650/32650 and other cylindrical lithium batteries, nickel metal hydride batteries, cadmium nickel batteries.