Plug & Range

Lectron NEXUS J1772 48A Review

A full 48 amps with nothing to sign into, and an ENERGY STAR certification we could confirm on the certifier’s own list rather than in a marketing bullet. The catch is a single missing number, and it decides whether you can install this charger at all.

By Stephen V.Last updated How we pick

Almost every 48-amp charger sold today arrives with an app, an account and a firmware channel. The Lectron NEXUS, in the hardwired J1772 build we are reviewing here, does not. It is 48 amps at 240 volts — 11.5 kW, the fastest current a house can feed without a service upgrade — wired straight into a 60-amp circuit, with an IP66 body, a 23-foot cable, a J-hook and plug holder in the box, and an ETL listing to UL 2594, UL 2231 and UL 2251. No Wi-Fi is described anywhere on Lectron’s page for it.

What makes it genuinely interesting is not the absence of the app. It is that we can prove the absence is deliberate. ENERGY STAR publishes its certified EV charger list as data, model number by model number, and Lectron’s 48-amp hardwired NEXUS appears on it twice — once as LECHGNexusHWJ1772with network capability recorded as “No,” and once as LECHGNexusHWJ1772-APPwith network capability “Yes.” Same amperage, same output, certified as two models because one has a radio in it. This is not a cheaper, stripped-down charger. It is the same hardware with the networking left out.

It is also the review on this site where the most important paragraph is about a number that is not published. Keep reading before you buy.

How this is funded:we earn a commission if you buy through our links, at no extra cost to you. It never changes which product we recommend, and we’ll tell you when we’d skip one. Full disclosure.

#1Best 48 amps with no app

Lectron Nexus J1772 48A (Hardwired)

The fastest charger we can find that has nothing to log into. It is a full 48 amps, ETL-listed to UL 2594, IP66 for an outside wall, and — unusually for a charger with no app — it is on the ENERGY STAR certified list under its own model number, which is the kind of proof a rebate administrator will actually accept. The price of that simplicity is real: no published way to dial the current down, so it wants a 60-amp circuit and nothing less, and no scheduling of its own, so your car has to do that part.

Strengths

  • 48A / 11.5 kW with no Wi-Fi, no account and no app to keep working
  • ENERGY STAR certified under its own model number (LECHGNexusHWJ1772), listed with network capability "No"
  • ETL listed to UL 2594, UL 2231 and UL 2251, with an IP66 indoor/outdoor body
  • 23 ft cable, a wall-mount J-hook and a plug holder included, with a 3-year warranty

Trade-offs

  • Lectron publishes no adjustable current range for this model, so it needs a 60-amp circuit to be used at all
  • Hardwired only — a licensed electrician, and it stays with the house
  • No scheduling on the charger: off-peak charging has to be set in the car
  • No operating-temperature range published, which is the spec a cold-climate install turns on
Max output48 A
Power11.5 kW
ConnectorJ1772
InstallHardwired
Cable length23 ft
Warranty3 years
WiFi + appNo
CertificationsETL listed to UL 2594, UL 2231 and UL 2251; FCC; ENERGY STAR (confirmed on the certifier's own list as model LECHGNexusHWJ1772)

Our charging-speed math. Forty-eight amps at 240V is about 11.5 kW, which at our 3.5 miles-per-kWh reference is roughly 40 miles of range an hour, or about 400 miles across a ten-hour overnight window. Lectron's own figure is 46 miles an hour, which assumes a more efficient car than our reference — plan around 40.

Build note. Lectron publishes up to 48 A at 240 V (11.5 kW), an SAE J1772 connector, a hardwired installation it says requires a professional, an IP66 rating for indoor and outdoor use, a 23 ft cable with a wall-mount J-hook and plug holder, UL 2594 / UL 2231 / UL 2251 certification under an ETL listing plus FCC and ENERGY STAR, and a 3-year warranty. Nothing on the page describes Wi-Fi, an app or an account, and the no-app build is a separately certified model: the ENERGY STAR certified AC-EVSE list carries LECHGNexusHWJ1772 with network capability "No" and a separate LECHGNexusHWJ1772-APP row with network capability "Yes". Two figures to note. The ENERGY STAR entry gives the output cord as 22 ft where Lectron and the Amazon listing both say 23 ft, and we record the manufacturer's figure that both of those agree on. And Lectron publishes neither an adjustable current range nor an operating-temperature range for this model, so neither is recorded here — the first of those is the reason it cannot be fitted to a circuit smaller than 60 amps.

Specs read from the manufacturer spec sheet, on October 4, 2026. “Not published” means the brand does not state that figure.

The one number Lectron does not publish

Start here, because it is the difference between this being an excellent charger and an expensive mistake. Lectron publishes no adjustable current range for this model.Not a narrow one, not a coarse one — none. There is no app to set it in and no DIP switch described on the product page.

That turns a feature into a constraint. NEC Article 625 treats EV charging as a continuous load, so the branch circuit is sized at 125% of the charger’s draw: 48 amps continuous needs a 60-amp circuit. A charger that can be turned down to 32 amps fits a 40-amp circuit instead, which is frequently the difference between a $400 install and a $4,000 service upgrade. This one cannot be turned down, so the 60-amp circuit is not negotiable. If your electrician’s load calculation does not leave room for one, stop reading and go to our load management roundup, which ranks the chargers that publish a range you can dial down, or our 100-amp panel picks for the small-service case specifically.

We could have inferred a range from the fact that the charger negotiates current with the car over the J1772 control pilot, or from what Lectron’s other NEXUS SKUs do. We will not. A spec the manufacturer does not publish is not a spec, and the whole point of the way we record products is that “not published” reads as a finding rather than a gap. Our spec sheet guide makes the same argument at length: a blank field is data.

The ENERGY STAR listing is the real headline

Plenty of chargers print ENERGY STAR on a box. This is the first non-networked charger we have reviewed where the certification can be confirmed in the certifier’s own dataset, under its own model number, and that is worth more than it sounds.

ENERGY STAR publishes the certified AC-output EVSE list as machine-readable data. Query it and the 48-amp hardwired NEXUS appears as LECHGNexusHWJ1772with network capability recorded as “No,” and a measured no-vehicle standby draw of 1.86 watts. The networked twin, LECHGNexusHWJ1772-APP, is recorded at 3.02 watts with network capability “Yes.” The 40-amp plug-in NEXUS is on the list the same way, as a pair at 1.88 and 3.14 watts.

Two things follow from that. The first is practical: utility purchase rebates are often tied to an ENERGY STAR listing rather than to smart features, so a charger with no radio can still qualify — check your own utility’s terms, and read our rebates and tax credits guide before you buy rather than after. The second is about what you are actually giving up by skipping the app: roughly 1.2 watts, which across a full year is about 10 kWh, or a dollar and change on a typical residential rate. Do not buy a charger without Wi-Fi to save electricity. Our cost-to-charge guide lets you run that on your own rate.

Build, listing and enclosure

The certification set is the deepest part of the spec sheet. Lectron publishes an ETL listing to UL 2594 (the standard for EV supply equipment), UL 2231 (personnel protection systems) and UL 2251 (plugs, receptacles and couplers), plus FCC. That is a named third-party listing with the standards numbered, which is the bar our cheap charger safety guide sets before we will recommend anything at any price. The Amazon listing title carries the UL 2594 certification and the ETL listing too, which is a good sign in a category where safety language is often vague on purpose.

The enclosure is IP66, rated for indoor and outdoor use — dust-tight and sealed against water jets. That is a real rating, and on paper it is enough for an exposed wall.

On paper. Here is the second gap, and it is the one that would stop us recommending this charger in a cold climate: Lectron publishes no operating-temperature range for it.An IP rating describes water and dust ingress; it says nothing about whether the electronics inside are specified to run at -20°F. Chargers that take winter seriously publish the number — the Autel MaxiCharger states -40 to 131°F, the ELEGRP states a -21°F floor, Grizzl-E publishes -30°C to +50°C. Lectron does not, so if your install is on a north wall in Minnesota, our outdoor and cold-weather roundup is the better starting point, and our cold weather guide explains why the number matters more than the enclosure class.

Cable, mount and the install

Twenty-three feet of cable, with a wall-mount J-hook and a plug holder included rather than sold as accessories. That is a good length — enough to reach around a car parked nose-in or to cover two bays in a pinch — and the included hook matters more than it sounds, because an unmanaged 23-foot cable on a garage floor is the thing people complain about six months in. Our long-cable roundup covers how far different lengths actually reach.

One discrepancy to record rather than smooth over: the ENERGY STAR entry for this model gives the output cord as 22 feetwhere Lectron’s page and the retail listing both say 23. We record the manufacturer’s figure that both of those agree on, and note the certifier’s. A foot either way will not change a buying decision, but a review that quietly picks the bigger number is not a review you should trust on the specs that do matter.

The install is hardwired only, and Lectron says it requires a professional. That is the right advice: a 60-amp circuit for a continuous load is not DIY territory, and in most jurisdictions the work needs a permit and an inspection. Our Level 2 installation guide covers the sequence, our installation cost guide covers what the quotes contain, and our permits guide covers the two moments skipping the paperwork costs real money. Hardwiring is also the more permanent choice in the sense that matters to a renter: the charger stays with the house. Our hardwired versus plug-in comparison argues that trade both ways.

What you give up with no app

Three things, and only the first is one we would hesitate over.

Measured energy at the wall. Your car reports what reached the battery. A metering charger reports what left the wall. The gap between them is the charging loss you pay for and do not drive on, and no charger without a radio can show it to you. If you need wall-side kWh for tax, business or landlord reasons, this is the wrong charger — our energy monitoring guide explains the distinction, and the smart roundup is where those picks are.

Scheduling on the charger. Off-peak charging has to be set in the car instead. For most people that is the better place for it anyway: the setting travels with the vehicle to every charger it ever plugs into, and it does not depend on a manufacturer’s cloud service staying online. Our time-of-use guide covers doing it car-side. If your car is old enough that it cannot schedule, that is a genuine reason to buy a smart charger.

Load management and access control. Neither is possible here. If an electrician has told you a charger needs to watch the rest of the house, you need a networked unit — that is not a feature you can work around, and our load management roundup is the page for it. Same for charging guests or tenants and billing them.

Who should buy it — and who should skip it

Buy itif you have confirmed two things: that your panel can carry a 60-amp circuit, and that your car can actually accept 11.5 kW. Clear both and this is the fastest charger we know of with nothing to sign into, with a certification set that names its standards and an ENERGY STAR listing you can confirm in the certifier’s own data if a rebate depends on it. Buy it, too, if dependency is what you are trying to avoid — no account, no firmware channel, no cloud service to be discontinued by a company that has moved on. Our no-Wi-Fi roundup makes that case in full and ranks this charger as the fastest way to act on it.

Skip itif your service is tight. This is the single clearest reason, and it has nothing to do with the charger’s quality: with no published adjustable range, 48 amps is the only setting, and a 60-amp circuit is the only circuit. Skip it if your charger will live fully exposed in a cold climate, because the temperature range is not published and that is the spec that decides it. Skip it if you want wall-side energy measurement or dynamic load management, both of which require a radio by definition. And skip it if you want to plug a charger in rather than wire it — this is hardwired only, so it is not a renter’s charger; our renter picks cover that case instead.

One last note on availability and price, because we do not print prices in prose: the live price above comes from the retailer on the date shown, not from this text. We confirmed the listing was in stock on the day this review was published and we do not feature a charger we cannot verify as currently purchasable. If the buy button has gone quiet by the time you read this, that is the honest state of the listing rather than a number we forgot to update.

Frequently asked questions

How fast does the Lectron NEXUS 48A charge?

Lectron publishes up to 48 amps at 240 volts, which is 11.5 kW. At our standard reference of roughly 3.5 miles per kWh that is about 40 miles of range an hour, or close to 400 miles across a ten-hour overnight window. Lectron's own figure is 46 miles an hour, which assumes a more efficient car than our reference — plan around 40. In practice your car's onboard charger sets the real ceiling, and on plenty of EVs it is below 11.5 kW, at which point 48 amps buys you nothing over a 40-amp unit.

Can the Lectron NEXUS 48A be turned down to a lower amperage?

Lectron publishes no adjustable current range for this model, so we record none. Practically that means it is a 48-amp charger or nothing: NEC Article 625 treats EV charging as a continuous load and sizes the circuit at 125% of the draw, so 48 amps continuous needs a 60-amp circuit. If a load calculation says your service cannot spare that, this is the wrong charger and no setting will rescue it. Chargers that do publish a range are ranked on our load-management and 100-amp-panel pages.

Does the Lectron NEXUS have Wi-Fi or an app?

Not in this build, and that is by design rather than omission. Nothing on Lectron's product page for this SKU describes Wi-Fi, an app or an account, and ENERGY STAR's certified-product list records the model as LECHGNexusHWJ1772 with network capability "No" — with a separate LECHGNexusHWJ1772-APP entry for the networked version of the same charger. If you want the app, buy that model number instead; if you want nothing to sign into, this is the one.

Is the Lectron NEXUS ENERGY STAR certified?

Yes, and unusually for a charger with no app, we can point at the certifier rather than the brand. ENERGY STAR's certified AC-output EVSE list carries model number LECHGNexusHWJ1772, so the certification is verifiable in the dataset a utility rebate administrator would check. That matters more than it sounds: purchase rebates are frequently tied to an ENERGY STAR listing, and this charger holds one without needing a radio.

Does the Lectron NEXUS 48A need an electrician?

Yes. It is hardwired only — Lectron states the installation requires a professional — and at 48 amps it needs a dedicated 60-amp circuit with appropriately sized conductors. Budget for a permit and an inspection as well; both are normal for an EV charger circuit and both are cheap compared with what skipping them can cost at resale or on an insurance claim.

Will it work outside?

Lectron publishes an IP66 rating for indoor and outdoor use, which covers dust and water jets. What it does not publish is an operating-temperature range, and that is the spec a cold-climate install actually turns on — an enclosure rating says nothing about whether the electronics are rated to run at -20°F. If your charger will live on an exposed wall through a hard winter, prefer a unit that publishes the temperature range.

How long is the cable, and does the mount come with it?

Lectron publishes 23 feet, and both the wall-mount J-hook and a plug holder are included rather than sold separately. One figure to note for completeness: the ENERGY STAR entry for this model records the output cord as 22 feet. We record Lectron's 23 feet because the manufacturer page and the retail listing agree on it, and flag the discrepancy rather than hiding it.

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