1. Used for welding 18650/26650/32650 lithium batteries, advantages: portable, stable, reliable, and durable.2. The user needs to bring their own 12V battery for supply, and the welding current is about 90A-150A, which is easy to weld for the common 0.1mm-0.12mm nickel plated sheet. After several generations of product updates, it is now upgraded to automatically trigger welding and release the finger of the button.3. Portable, stable and durable4. This circuit with a 12V battery will become an energy storage spot welder for welding nickel sheets (such as lithium batteries and nickel-chromium batteries)5. Battery recommendation: 20-45ah lead-acid battery with good performance and small internal resistance, 3.5-5.5ah model airplane lithium battery pack around 45C, 30-35ah capacity packSystem voltage: 12V-14.6VWorking current: 90-150Acolour:BlackMaterial:PCBPackage Contents:1 set x electric welding machine with accessoriesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.