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Model review

Lectron Tesla portable charger review

A 40-amp portable with a native NACS connector, sold with an app or without one. Here is what Lectron publishes, and where it fits in a Tesla household.

By Sawyer V. · Published September 10, 2026

A portable EV charger and cable stored in a car trunk organizer
Illustrative photo, not the Lectron unit reviewed.

How this page is funded: we earn a commission if you buy through our Amazon links, at no extra cost to you. It does not change what we recommend, and we say plainly when the honest answer is to buy nothing. Full disclosure.

This is the Tesla-only sibling of Lectron's J1772 portable: the same idea -- a Level 2 charger that lives in the car -- with a NACS connector on the end. We have not tested one; figures come from Lectron's product page, linked at the foot of this page.

The specs

Published specifications
Lectron 40 A NACS portable
Output40 A / 9.6 kW at 240 V
ConnectorNACS
PlugNEMA 14-50
Cable16 ft, per Lectron's FAQ
VersionsWi-Fi with the Lectron app, or plug-and-play
StatusLED indicators
CertificationUL 2594 / UL 2231; handle UL 2251; Energy Star, ETL and FCC -- all per Lectron
Outdoor useWeather-resistant for indoor and outdoor use; Lectron advises avoiding extreme weather
In the boxCarrying case
From Lectron's product page and its FAQ, fetched 2026-09-10.

What 40 amps delivers

The arithmetic

40 A x 240 V = 9,600 W = 9.6 kW

At 3.5 mi/kWh: about 34 miles of range per hour (Lectron quotes up to 36)

Needs a NEMA 14-50 on a 50 A circuit: 50 x 0.8 = 40 A continuous

App or no app

The Wi-Fi version adds charging schedules and energy settings in the Lectron app. The plug-and-play version has neither, per Lectron's FAQ, and shows progress on its LEDs. A Tesla can schedule its own charging from the car, so for many owners the plug-and-play version loses nothing that matters. Chargers without an app.

Who should skip it

  • A non-Tesla may borrow it. A J1772 portable plus the Tesla's adapter serves both. J+ Booster 2 review.
  • The outlet is far from the car. 16 ft is short for a portable; measure the run, and never add a household extension cord. Extension cords.
  • You also want a standard outlet. Lectron's Level 1 & 2 model adds a 5-15 plug. Lectron Level 1 & 2 review.

The Lectron 40 A NACS portable in full

Full published specifications, and the case against it.

1. A Tesla-only portable

Lectron Portable Level 2 Tesla EV Charger (40 A)

Lectron · NACS · 40 A / 9.6 kW · 16 ft cable

A 40-amp portable with a native NACS connector, so it plugs straight into a Tesla. Sold with or without Wi-Fi, and Lectron publishes UL 2594 / UL 2231 certification.

What is good

  • Native NACS connector -- nothing between the plug and a Tesla
  • 40 A, the most a 14-50 on a 50 A circuit supplies continuously
  • Published UL 2594 / UL 2231 certification
  • Choice of an app or a no-app version

What is not

  • NACS only -- a J1772 car needs an adapter
  • 16 ft of cable, per Lectron's FAQ -- short for a portable, so measure the run
  • Needs a 14-50 on a 50 A circuit to run at 40 A
Published specifications for the Lectron Portable Level 2 Tesla EV Charger (40 A)
Output40 A / 9.6 kW at 240 V
ConnectorNACS (Tesla)
PlugNEMA 14-50
Cable16 ft, per Lectron's product FAQ
VersionsWi-Fi with the Lectron app, or plug-and-play
CertificationUL 2594 / UL 2231, per Lectron

Skip this if: Skip it if a non-Tesla might ever borrow it. A J1772 portable plus the Tesla's adapter serves both.

Specifications above are the manufacturer’s published figures. Source: Lectron. We have not tested this unit — see how we pick.

Check price on Amazon#ad how we are funded

FAQ

Questions people actually ask

Is the Lectron Tesla portable charger any good?
On paper it covers the essentials: 40 A, a native NACS connector, published UL 2594 / UL 2231 certification and a choice of app or no app. Its cable, at 16 ft per Lectron's FAQ, is on the short side.
How long is the Lectron 40 A Tesla charger's cable?
16 ft, per Lectron's product FAQ.
Does the Lectron 40 A Tesla charger work on a regular outlet?
No -- it has a NEMA 14-50 plug. Lectron's Level 1 & 2 model adds a standard 5-15 plug.

Sources

Where these numbers come from

  1. Lectron Portable Level 2 Tesla EV Charger, 240 V, 40 A, NEMA 14-50 — LectronOutput, NACS compatibility, Wi-Fi and plug-and-play versions, LED status, the 16 ft cable (product FAQ), outdoor-use note, carrying case and the certifications Lectron states. Fetched 2026-09-10.
  2. NEC Article 625: EV charging equipment — WireRefContinuous-load rule behind every circuit figure on this page.

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