The Milwaukee M12 soldering iron is a cordless, battery‑powered soldering tool that runs on Milwaukee’s M12™ 12 V REDLITHIUM™ battery system. It’s designed for electricians, technicians, HVAC installers, automotive pros, and field service workers who need portable soldering power without being tied to a mains outlet. https://omertools.com.au/product/milwaukee-m12si-0-12v-li-ion-cordless-soldering-iron-skin-only