(nw["amenity"="charging_station"]["fee"="no"]["parking:fee"!="yes"];
- nw["amenity"="charging_station"]["fee"="no"]["parking:fee"!="yes"][~"^authentication:.*$"~"^yes$"];);
nw["amenity"="charging_station"]["fee"="no"]["parking:fee"!="yes"]["authentication:none"="yes"];
overpass-turbo