A universal adapter for the X20V Parkide tool battery with an addon for connecting a Pinecil or T100 style soldering iron. The adapter can be used to attach your own addon. I included a step file for remixing the designs to your own specifications.
Both are remixes.
Parkside x20v battery adapter to DC connector
Universal Adapter for Lidl Parkside X20v Battery
The top was made to fit a standard 20mm rocker switch and a 5.5 2.1 socket. M4 12 to 16 bolts should fit nicely. Faston spade connectors have been used to connect to the battery.
Take care to have firmware installed on your iron to protect the battery from under voltage.
The author remixed this model.