Radio power connector ID

Ahoy.
Need help identifying this power connector from a BK DMH5992X. Rectangular with 3 prongs. Openings are 5.5x6mm. Keyed on the same side as the tab. I found the other end as a pigtail (second photo) on ebay from china but would like to know the part number(s) and avoid the hassle, expense, etc.

Thank you.