> Did they roll their own?

For example, in the US, Francis Energy quickchargers require a Francis Energy RFID card or use of their app.

Some gas station pump terminals will allow you to pump your debit card’s available balance and no more. No charger I have come across can do this, billing some arbitrary amount like $40 that is eventually replaced with the correct expense, if not outright requiring credit. Forget paying with cash, even for quick chargers located at gas stations.