Buying an EV adapter by connector shape alone is an easy way to buy the wrong thing.
The correct adapter depends on the vehicle inlet, the charger connector, and whether the session is AC Level 1/2 or DC fast charging. The tool deliberately returns “no adapter needed” when that is the right answer.
| Vehicle | Charger | Physical adapter path |
|---|---|---|
| J1772/CCS1 | J1772 AC | No adapter |
| J1772/CCS1 | NACS AC | NACS to J1772 |
| J1772/CCS1 | Tesla Supercharger DC | NACS to CCS1, only when that vehicle/automaker has Supercharger access |
| J1772/CCS1 | CCS1 DC | No adapter |
| NACS | J1772 AC | J1772 to NACS |
| NACS | NACS AC | No adapter |
| NACS | Tesla Supercharger DC | No physical adapter when vehicle and network access are supported |
| NACS | CCS1 DC | CCS1 to NACS, only when the exact vehicle supports DC fast charging through that adapter |
NACS uses the same compact connector shape for both AC and DC charging, but that does not make an AC adapter a DC-fast-charging adapter. First identify the car port. Then identify the charger connector. Then identify AC versus DC. Only after all three do you know the adapter direction.
Eligibility check: Connector shape alone does not establish Tesla Supercharger or charging-network access. Confirm the exact vehicle’s eligibility against current automaker and network guidance before using a DC fast-charging adapter.
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