A cordless soldering iron is a soldering tool that runs on a battery or portable power source instead of being plugged into mains power. This portability lets you solder electrical connections, wires, and components anywhere — including job sites, inside electrical panels, vehicles, field service areas, or places without convenient access to power outlets. https://omertools.com.au/product/milwaukee-m12si-0-12v-li-ion-cordless-soldering-iron-skin-only