TIL that my Milwaukee heated jacket battery adapter works for my dewalt heated jacket. Battery adapter for my dewalt jacket broke a year ago and haven't used it since. I am in
HoneyCare 12V Li-Polymer Replacement Battery Pack Fit for Metabo/Milwaukee/Dewalt/AEG Heated Jacket Coat Battery,Lithium-Ion Heated Kit(12V 5AH Battery and Charger) - Amazon.com