WEP 937D-I 3 Cordless Soldering Iron Kit Compatible with Milwaukee 20V/18V Battery, with Integrated Iron Holder, Digital Display, 6 Soldering Tips, Adjustable Temperature, Auto Sleep & Shutdown

I have one of these, running off an m18. For the spot time I do need to solder in the field, it's been great. Probably wouldn't trust it for surface mount, but basic wiring and through hole boards are very workable. https://a.co/d/003Ujxgf