It’s a very small post, and I forgot to take photos along the way, but I popped out to Daiso today and picked up a USB car charger for $3.80, back at home, I disassembled it and desoldered the contacts, I then cut open the end to fit a male XT60 connector in.
Re-soldered the XT60 in place of the old cigarette lighter socket connector and placed it back in the casing.
A little hot glue and I have a 12-24v >5v adaptors that works with all my 3s/4s lipos !!
Probably works a bit below 12 too, very convenient to keep in my bag in case I need some juice.