A NACS portable EV charger is a Level 1 or Level 2 charger that ends in the North American Charging Standard connector, now standardized by SAE International as SAE J3400. Demand is growing because Tesla vehicles have always used the connector and many other automakers have moved new models to a NACS charging port. For a US importer, the right NACS portable charger is one that matches the outlets customers actually have, carries a recognized safety listing and is honest about its current rating.
This guide lists the specifications to fix before you request quotes, the compliance documents to collect and the mistakes that cause returns.
Specifications to Decide Before Quoting
| Specification | Common options | What to consider |
|---|---|---|
| Vehicle connector | NACS (SAE J3400) or J1772 | Offer NACS for new vehicles; keep a J1772 version or adapter for older non-Tesla vehicles |
| Grid plug | NEMA 5-15P, NEMA 14-50P, NEMA 6-50P | NEMA 14-50 is the most common Level 2 outlet in garages and RV parks |
| Maximum current | 12 A (120 V), 16 A, 32 A, 40 A (240 V) | EV charging is a continuous load, so a 40 A charger needs a 50 A circuit |
| Adjustable current | Button or app selectable steps | Lets users charge safely on older or smaller circuits |
| Cable length | 20 ft, 25 ft, longer | Longer cables add copper cost and weight; 25 ft suits most driveways |
| Enclosure | IP65 or IP66 control box, rated connector | Garage and outdoor use, rain and winter conditions |
For outlet choices and circuit sizing, see NEMA 14-50 vs 6-50 vs 5-15, and for the connector background see Type 2 vs J1772 vs NACS.
Safety Listing and FCC
US customers, installers and inspectors expect EV chargers to be listed by a Nationally Recognized Testing Laboratory, such as UL, Intertek (ETL) or another OSHA-recognized lab. Ask for the listing for the exact model, including the NACS configuration and plug, and check it on the lab’s online directory. Our guide to UL and ETL listing explains how NRTL certification works.
Chargers are electronic devices, and models with Wi-Fi or Bluetooth are radio devices, so FCC equipment authorization is also needed before marketing or importing them; see FCC rules for EV chargers. If you plan to sell into rebate programs or big-box retail, ask whether the model has ENERGY STAR certification.
Adapters and Mixed Fleets
Many households own one NACS vehicle and one J1772 vehicle. You can serve them in two ways: a NACS charger plus a NACS-to-J1772 adapter, or separate NACS and J1772 versions of the same charger. Adapters must be rated for the full charging current and used as the vehicle maker recommends. Selling both versions keeps listings clear and reduces the number of customers who buy the wrong connector.
Packaging and Listing Details That Prevent Returns
- State the connector clearly on the box and in the first line of the listing: “NACS (Tesla-style) connector”.
- Show the grid plug in a photo and list which outlet it fits.
- State the maximum current and the circuit size it needs, for example “40 A charging, requires a 50 A circuit”.
- Include a warning against extension cords; see why in our portable EV charger buying guide.
- Use a storage case or bag; portable chargers live in car trunks.
Our checklist for selling portable chargers online covers marketplace listings and returns in more depth.
Importing
Check HTS classification, Importer Security Filing and any additional duties on Chinese-origin goods with a licensed customs broker before you set prices, because tariff rates have changed repeatedly. Our guide to importing EV chargers into the US covers the basics.
How EVDANCE Supports NACS Programs
EVDANCE builds NACS portable chargers with NEMA 14-50P plugs, such as the EV-ACS4005T, alongside J1772 versions and NACS-J1772 adapters. Cable lengths of 25 ft or 28 ft are available for North America, private label starts from 50 units and products carry a 3-year standard warranty. See our USA supplier page for more.
Frequently Asked Questions
Is NACS the same as the Tesla connector?
Yes. NACS is the connector Tesla developed, now standardized by SAE as J3400 so that other manufacturers can use it.
What current should a NACS portable charger support?
For Level 2 on a NEMA 14-50 outlet, 32 A or 40 A is common, with adjustable steps for smaller circuits. A 40 A charger needs a 50 A circuit because EV charging is treated as a continuous load.
Can a NACS charger charge a J1772 vehicle?
Only with a suitable NACS-to-J1772 adapter rated for the charging current, or by choosing a J1772 version of the charger.
Do I need UL listing to sell in the US?
Listing by an NRTL such as UL or Intertek is expected by inspectors, installers and major retailers, and is the normal route for EV chargers sold in the US.
Related Reading
- OEM and Private-Label EV Chargers: A Complete Guide for Brands
- Type 2 vs J1772 vs NACS: Which EV Charger Connector Does Your Market Need?
- UL and ETL Listing for EV Chargers: How NRTL Certification Works
- Importing EV Chargers Into the US: Customs, HTS and Section 301
Key Takeaways
- Fix connector, grid plug, current, cable length and enclosure rating before requesting quotes.
- Ask for NRTL listing and FCC authorization that cover the exact NACS configuration.
- Serve mixed households with clear NACS and J1772 versions or rated adapters.
- State connector, plug and circuit size plainly on packaging and listings to cut returns.
Sources & Standards
- SAE J3400 — North American Charging System (NACS) electric vehicle coupler
- NFPA 70, National Electrical Code — Article 625, Electric Vehicle Power Transfer System
- U.S. OSHA — Nationally Recognized Testing Laboratory Program
- Federal Communications Commission — Equipment Authorization