EV plug and connector types: NACS, J1772, CCS and what your car actually needs

A connector type tells you two things at once: whether it carries AC or DC power, and which cars physically fit it. Those are worth separating before any of the names make sense.AC charging is what happens overnight in a garage or all day at a workplace lot, at a rate your car's onboard charger controls. Only two connectors do this in North America: J1772, which is AC-only, and NACS, which does AC and DC through the same port.DC fast charging is what happens on a road trip, where the charging station itself pushes high-power direct current straight into the battery, bypassing the car's onboard charger. Three connectors do this: CCS1, NACS, and the older CHAdeMO.Once you sort a connector into 'AC' or 'DC' the rest of this page is just detail. Home charging almost never touches CCS1 or CHAdeMO at all.

One table, because this is the kind of thing you want to scan once and stop thinking about.The power figures below are what the connector hardware is rated to carry, not what any specific charger or car will actually deliver — a given Level 2 unit, Supercharger stall or fast-charging station is very often set well below the connector's ceiling.

NACS is the compact five-pin plug Tesla designed and used exclusively for years, and it is now standardized by SAE International as J3400. That standardization is what turned it from 'the Tesla plug' into a connector other automakers can build to.The standardization happened in two dated steps: SAE published a Technical Information Report for J3400 in December 2023, then in August 2024 the SAE EV Coupler Task Force voted to advance it to a full Recommended Practice, which SAE formally published on September 30, 2024. Both dates are on the record with the DOE Joint Office of Energy and Transportation and in industry trade coverage of the release.What makes it different from the other three: one port does both jobs. The same physical connector carries AC for overnight charging and DC for fast charging, because the extra pins other standards need for DC are folded into the same compact shape.Every Tesla built for the North American market uses this port. Beyond Tesla, the federal Joint Office of Energy and Transportation states that 'all major Auto OEM and EV charging companies have announced plans to adopt the J3400 connector as early as 2025' — that is a plan and a direction, not a claim that every non-Tesla car on the road has one. Check your own vehicle's port before assuming.

J1772 is the connector almost every EV sold in North America before the NACS transition uses for AC charging — the plug on your home Level 2 unit or a public Level 2 station. It carries no DC pins and does no fast charging.It matters beyond its own hardware, too. AC charging over NACS uses the same J1772 control-pilot signalling underneath the different plug shape. That shared signalling is the entire reason a passive adapter can move an AC connection between NACS and J1772 in either direction — the two plugs are already speaking the same protocol, just through different pin arrangements.If your car has a J1772 port, that has no bearing on what DC connector it uses for fast charging. J1772 is AC-only; the DC decision is a separate one, covered below.

CCS1 — Combined Charging System, also called the J1772 combo — is built by keeping the J1772 AC pins on top and adding two larger DC pins underneath. One inlet on the car, one connector at the station, for both AC and DC.It is the DC fast-charging standard most non-Tesla EVs sold in North America carry today, and the DOE's connector overview states plainly that 'most EV models on the market today charge using the CCS1 connector.' A car with a CCS1 inlet takes an ordinary J1772 plug for AC charging without any adapter at all, because the top part of the connector is J1772.This is the connector in transition. New models from automakers that have committed to NACS are shipping with NACS ports instead, model year by model year — but a CCS1 inlet on a car you already own, or a car for sale today, is not obsolete. Public CCS1 fast-charging infrastructure is extensive and stations aren't disappearing.

CHAdeMO is the oldest DC fast-charging standard in wide use, a round connector developed in Japan and carried on older Nissan Leaf models and some older Mitsubishi Outlander PHEV and i-MiEV models. It does DC only — no AC pins at all.It is declining, and the clearest evidence is the car most associated with it. The redesigned third-generation Nissan Leaf drops CHAdeMO entirely: it ships with a J1772 port for AC on one front corner and a NACS port for DC fast charging on the other, a two-port layout built specifically because NACS still doesn't carry AC and DC through federally required safety features the same way on every implementation. If you own an older CHAdeMO vehicle, existing CHAdeMO stations keep working, but expect the network to keep shrinking rather than growing, and don't plan a new purchase around it.

The two AC connectors adapt cheaply because they share the same underlying signalling. A NACS-to-J1772 or J1772-to-NACS AC adapter is a passive piece of moulded plastic with no electronics in it, and it works reliably in either direction for home and workplace Level 2 charging.DC adapters are a different, more serious category, because CCS1 and NACS use different DC communication protocols underneath — the adapter has to do real electrical translation, not just reshape a plug. The Joint Office of Energy and Transportation describes Tesla's 'Magic Dock' as 'an attached NACS-to-CCS1 connector that allows a non-Tesla EV owner to plug in at a Tesla Supercharger station' — built into the charging stall itself at locations that offer it, not something you carry. Going the other way, the same source notes that certified adapters letting a NACS-equipped vehicle use a CCS1 DC fast charger exist as a distinct product category, separate from the stall-mounted kind.CHAdeMO is the hardest of the three to adapt, because it's the oldest and least standardized against the newer connectors. Treat CHAdeMO compatibility as something to confirm with your specific vehicle and adapter manufacturer rather than something to assume.The practical rule for any DC adapter: confirm both the vehicle manufacturer and the charger network support that specific pairing before you buy or rely on one. A DC adapter carrying real current on a wrong or unsupported pairing is a warranty and safety question, not just a fit question.

Nothing above tells you what to bolt to your garage wall, and that's on purpose. At home you're doing AC charging, and AC charging over NACS and J1772 uses the same signalling — which is why a cheap passive adapter closes that gap in either direction. The DC connector question that fills most of this page — CCS1 versus NACS versus CHAdeMO — is a road-trip question you settle when you buy the car, not a garage question.We've written that decision out in full, including the adapter table for every car-port-and-charger-connector combination and what a mixed two-car household should actually buy: see NACS or J1772 at home. This page is the map of the whole territory; that one is the answer for your driveway.