I have a tutorial for Mennekes type 2 connectors.
It’s in dutch, but Chrome can translate the complete site quite well.
I bought a small version of an adapter like this on ebay to charge my boards those of my crew when we do group rides. ebay item 274520865606 The PlugShare App and website also help to find free or inexpensive charging locations across North America. In the time of Covid-19 the more I can stay outdoors when charging the better.