Checking EV Charging Connector Compatibility
Unlike Korea, where nearly all EVs launched since 2021 standardized on a single DC fast-charging connector, the US market still runs on three overlapping standards. CCS1 (Combined Charging System) is used by most non-Tesla EVs, Tesla vehicles use the NACS (North American Charging Standard) connector, and older Nissan Leafs still use the CHAdeMO standard, which is gradually being phased out of new charging networks.
This checker takes your vehicle's fast-charging connector and the charger you're hoping to use, then tells you whether they're directly compatible. As more automakers adopt NACS and Tesla opens up its Supercharger network, many locations now offer "Magic Dock" stalls with a built-in adapter that lets CCS1 vehicles charge on NACS hardware — this checker treats that combined option as compatible with both CCS1 and NACS vehicles.
CHAdeMO generally isn't cross-compatible with either CCS1 or NACS without a separate adapter, and CHAdeMO-compatible public stations are becoming less common as the network shifts toward CCS1 and NACS. If you're planning a road trip, it's worth checking a charging network's app or map ahead of time to confirm which connector type is available at your planned stops, since not every station carries every standard.
Frequently Asked Questions
CCS1 (Combined Charging System) is the standard used by most non-Tesla EVs, while Tesla vehicles use the NACS (North American Charging Standard) connector, and older Nissan Leafs use CHAdeMO.
It's becoming more common: many non-Tesla EVs can now get an adapter for Tesla's NACS Supercharger network, and some Superchargers have a built-in CCS1 adapter, but CHAdeMO generally isn't cross-compatible with either.