Lectron vs A2Z charging adapters

Get the direction right before you get the brand right. Both companies make adapters in both directions, and buying the wrong direction from the better brand still leaves you with a part that does not fit. The second name in the product title is your car — the direction guide is the one-line rule.

With that settled: both brands are legitimate, both publish certifications, and at residential power levels both deliver identical charging. What separates them is sealing, temperature range, and how much each one tells you.

Quick picks

Ranked, with the reasoning underneath. Tap any row to jump to that write-up; tap the price to check it on Amazon. Prices come from the live layer, never from this page.

#	Product	Best for	Type	Price
1	Lectron Tesla (NACS) to J1772 Adapter, 48AThe adapter a J1772 car needs to use a Tesla wall, destination or mobile connector — which is the direction many apartment buildings have already installed.	A J1772 car at a Tesla cable	AC charging adapter	Check price#ad
2	A2Z EV Stellar NACS to J1772 Adapter, 80AThe same direction as the Lectron with a higher rating, an IP67 body and a published temperature range — the one to buy if it lives outdoors.	Outdoor, year-round use	AC charging adapter	Check price#ad
3	Lectron J1772 to Tesla (NACS) AdapterThe opposite direction, and the one Tesla drivers actually need: it lets a NACS car take the J1772 cable that most workplaces and older buildings already have.	A Tesla at a J1772 station	AC charging adapter	Check price#ad
4	A2Z EV J1772 to NACS Adapter, 80ASame direction as the Lectron, with an integrated locking pin — the answer if your charging happens somewhere other people walk past.	Cables that get knocked	AC charging adapter	Check price#ad

#1 · A J1772 car at a Tesla cable

Lectron Tesla (NACS) to J1772 Adapter, 48A

The adapter a J1772 car needs to use a Tesla wall, destination or mobile connector — which is the direction many apartment buildings have already installed.

Published specifications for the Lectron Tesla (NACS) to J1772 Adapter, 48A, each linked to its source

Rating	Up to 48A / 240V (11.5 kW)source
Direction	Tesla (NACS) charging source into a J1772 vehicle portsource
Compatibility	Tesla High Powered Wall Connectors, all generations of Destination Charger, and Mobile Connectorssource
Charging type	AC Level 1 and Level 2 only — not compatible with Superchargerssource
Certification	SGS certified to UL 2251source

What those numbers mean

Get the direction right before the brand. This adapter goes on a Tesla-shaped plug so a J1772 car can take it. If you drive a Tesla and the building's charger is J1772, you need the opposite adapter and this one will not physically fit.

The 48 amp rating is the adapter's ceiling. It does not raise anything: the slowest link in the chain — station, adapter, cable, car — sets the speed.

AC only, and that is a property of the adapter rather than a limitation to work around. Superchargers are DC and use an entirely different UL standard.

What it does well

• Rated to 48A, above what any Tesla AC source will deliver, so the adapter is never the bottleneck
• Certified to UL 2251, the standard written for charging couplers
• Turns a building's existing Tesla destination chargers into infrastructure your J1772 car can use

What it does not

• AC only, so it does nothing at a Supercharger
• Small enough to walk off from a shared parking structure

Skip this one if: You drive a Tesla. This is the wrong direction — you want a J1772-to-NACS adapter instead, and buying this one is the most common mistake in the category.

Check price on Amazon

#ad · how this is funded

#2 · Outdoor, year-round use

A2Z EV Stellar NACS to J1772 Adapter, 80A

The same direction as the Lectron with a higher rating, an IP67 body and a published temperature range — the one to buy if it lives outdoors.

Published specifications for the A2Z EV Stellar NACS to J1772 Adapter, 80A, each linked to its source

Rated current	80Asource
Rated voltage	277Vsource
Direction	NACS charger connector into a J1772 vehicle portsource
Charging type	AC only — not compatible with DC chargerssource
Certification	UL 2252 / CSA-C22.2 certified, certification number 80265273source
Ingress rating	IP67; IP54 when matedsource
Operating temperature	-30°C to 50°Csource

What those numbers mean

A published operating temperature range is rarer in this category than it should be, and it is the figure that matters if your car lives in an uncovered lot through a real winter.

IP67 is the unmated rating — the adapter sitting in a puddle. IP54 mated is the number that applies while it is actually plugged in, and it is the more useful of the two.

80A and 277V are far above anything a residential AC source produces. Treat them as headroom, not as speed.

What it does well

• Published -30°C to 50°C operating range
• IP67 sealed body, IP54 while mated
• UL 2252 and CSA certified, with the certificate number published

What it does not

• Costs more than the adequate-for-most 48A alternatives
• The 80A headline is irrelevant on any residential AC circuit

Skip this one if: The adapter will live in a glovebox and get used indoors in a mild climate. You are paying for sealing and a temperature range that will never be tested.

Check price on Amazon

#ad · how this is funded

#3 · A Tesla at a J1772 station

Lectron J1772 to Tesla (NACS) Adapter

The opposite direction, and the one Tesla drivers actually need: it lets a NACS car take the J1772 cable that most workplaces and older buildings already have.

Published specifications for the Lectron J1772 to Tesla (NACS) Adapter, each linked to its source

Maximum current	Up to 80A at 240V ACsource
Direction	SAE J1772 charging station into a Tesla (NACS / J3400) vehicle portsource
Compatibility	Any Level 1 or Level 2 charger with a J1772 connector; Tesla Model S, 3, X and Y plus other NACS (J3400) vehiclessource
Ingress rating	IP67-rated for water and dustsource
Operating temperature	-22°F to 122°Fsource
Certification	UL 2252 certified, with built-in temperature monitoring and over-temperature protectionsource

What those numbers mean

Most public and workplace AC charging in the US is still J1772, and most Teslas ship without an adapter for it. This is the part that fills that gap, and it lives in the frunk.

IP67 is the strongest ingress rating of any adapter here — dust tight and rated for temporary immersion rather than just spray. That is the specification to want for something left connected outdoors overnight, though it is still worth keeping the coupling out of standing water.

80A is roughly double what any Level 2 AC station will hand you, so the adapter is never the limiting factor in the chain. The built-in temperature monitoring is the more meaningful feature: it is watching the connection you are not.

What it does well

• The direction Tesla drivers actually need for apartment and workplace J1772 cables
• IP67 rating and a published -22°F to 122°F operating range
• UL 2252 certified, with over-temperature protection built in

What it does not

• AC only — it does nothing at a CCS DC fast charger
• Small and valuable, which is exactly the theft profile of a shared parking garage

Skip this one if: Your car has a J1772 port. This adapter is for NACS-port vehicles and will not fit yours in either orientation.

Check price on Amazon

#ad · how this is funded

#4 · Cables that get knocked

A2Z EV J1772 to NACS Adapter, 80A

Same direction as the Lectron, with an integrated locking pin — the answer if your charging happens somewhere other people walk past.

Published specifications for the A2Z EV J1772 to NACS Adapter, 80A, each linked to its source

Rated current	80A maximum at 240VACsource
Maximum power	19.2 kWsource
Direction	SAE J1772 charger into a NACS vehicle portsource
Charging type	AC only (Level 1 and Level 2)source
Certification	UL 2252 / CSA-C22.2 certified, certificate number 80259177source
Ingress rating	IP54, Type 3R enclosuresource
Operating temperature	-22°F to 122°F (-30°C to 50°C)source
Retention	Integrated locking pin prevents accidental disconnectionsource

What those numbers mean

The locking pin is the differentiator and it addresses a real failure: an adapter that separates when someone brushes the cable ends the charging session, and you find out in the morning.

Type 3R is an enclosure classification for outdoor use against falling rain. Together with IP54 it describes an adapter meant to stay connected outside, not one meant to be sheltered.

19.2 kW is the theoretical AC ceiling of the standard, not a speed you will see. No residential circuit a renter can reach produces it.

What it does well

• Integrated locking pin against accidental disconnection
• UL 2252 and CSA certified with the certificate number published
• Type 3R and IP54 rated, with a stated temperature range

What it does not

• More expensive than adapters that do the same electrical job
• The locking pin is one more thing to operate in the cold with gloves on

Skip this one if: You charge in a private, sheltered spot nobody walks past. The retention feature you are paying for solves a problem you do not have.

Check price on Amazon

#ad · how this is funded

• It publishes certificate numbers. Both A2Z adapters state their UL 2252 / CSA certification number outright. A published number is checkable in a way that the word "certified" is not, and very few brands in this category bother.
• It publishes a mated ingress rating. The Stellar states IP67 unmated and IP54 while connected. The mated figure is the one that applies overnight, and publishing both is the careful way to do it.
• The J1772→NACS unit has an integrated locking pin against accidental disconnection — a real failure mode, since an adapter knocked loose ends the session and you find out in the morning.

• The J1772→NACS adapter carries IP67 and built-in temperature monitoring with over-temperature protection. That is the strongest sealing figure of the four and the only one that actively watches the connection while it runs.
• Wider availability and a broader catalog, which matters if you are buying several parts at once.
• Its NACS→J1772 adapter names its compatibility precisely — Tesla Wall Connectors, all generations of Destination Charger, and Mobile Connectors — rather than saying "works with Tesla chargers" and leaving you to guess whether that includes DC.

Three of these four are rated at 80 amps. Residential AC charging tops out at 40 amps on a plug-in circuit, so that rating is headroom rather than speed. It is not worthless — headroom on a connection carrying current for eight hours a night is genuine margin — but nothing about it will charge your car faster. What amp rating you need works through where the real ceiling sits.

1. 1Confirm the direction first. J1772 car using a Tesla cable → NACS-to-J1772. Tesla or NACS car using a J1772 cable → J1772-to-NACS.
2. 2If it lives outdoors year-round, take the one that publishes a mated ingress rating and a temperature range. In the NACS→J1772 direction that is clearly the A2Z Stellar.
3. 3If it lives in the car and gets used occasionally in a mild climate, either brand's certified option is genuinely fine and the cheaper one is the sensible buy.
4. 4If the cable gets knocked — a shared structure, a walkway nearby — the A2Z J1772→NACS locking pin is the feature worth having.
5. 5Whichever you choose, in shared parking, add [a lock](/adapters/j1772-lock). The adapter is the most stealable item in the setup.

Every adapter on this page is AC. None works at a Supercharger, because DC fast charging is a different technology that happens to share a connector shape. That catches people out constantly, and it is worth understanding rather than memorizing — why adapters are AC only explains what the standards actually separate.

Contact wear across hundreds of cycles, real thermal behavior at sustained current, and how each seal ages. Those need a test program we do not have. What this comparison does is put the published specifications beside each other and flag which figures each manufacturer declines to publish — which is itself information. The method is written down.