For $80 why bother beating up Hyndai. Look, these units are not exactly rocket science, it's more about the quality of the connectors used to make the DC connection. In my case the max charge rate is around 70KWH, so I'm not going to get excited about something rated for 500KW. Most stations are not going all that high anyway, and frankly your vehicle is going to start stepping down from 350/250 pretty fast past 60%. At this point these things are engineered and starting to get stamped out. For older cars like mine, just grab something. If you have a newer car that will actually hit 250 maybe look at the customer reviews. I bought one of the compact units for each vehicle.