Adapter to Convert Tesla NACS to J1772 EV Charging Port - Secure

In this review the Schumacher SA947 adapter is assessed for EV owners who want to keep charging options open as connector standards shift. The bottom line: this adapter is for drivers with a J1772 port who need reliable access to Tesla NACS Level 1 and Level 2 chargers, and the single biggest reason to buy is its keyed security lock combined with broad compatibility, which lets you plug into thousands of destination chargers without worry. The reviewer found it straightforward to use, compact to carry, and built to resist dust and water in everyday charging situations.

Key Features

• Future proofing: Lets a vehicle with a J1772 inlet use NACS chargers so owners can access expanding Tesla destinations and public networks.
• Level 1 and Level 2 support: Works with both slower and faster AC chargers, making it versatile for home and destination charging.
• Keyed security lock: Prevents unauthorized unplugging so owners can leave a vehicle charging while running errands with extra peace of mind.
• Compact size: Small enough to store in a glove box or backpack so it is practical to carry during travel or daily use.
• Ingress protection: IP54 dust and water resistance gives confidence for outdoor charging in light rain or dusty locations.
• Simple installation: Snaps on the NACS charging gun in seconds and then plugs into the J1772 inlet without tools.

Who It's For

The Schumacher SA947 is well suited for current EV owners with a J1772 charging port who want to retain full access to the growing number of NACS chargers, or for fleet and shared vehicles where a security lock reduces the risk of unauthorized removal. It is also useful for drivers who frequently travel and need a small, easy-to-store adapter to expand available charging options.

Owners who rely exclusively on high-power DC fast charging or vehicles that require OEM adapters for warranty reasons should evaluate whether an adapter meets their exact needs. Likewise, those needing adapters for proprietary or non-standard inlets should look for solutions specific to their vehicle rather than this J1772-to-NACS adapter.

Pros & Cons

Pros

• Secure keyed lock stops others from unplugging the vehicle during charging.
• Compact and lightweight for convenient storage in a glove box or bag.
• IP54 rating offers dust protection and resistance to light water exposure.
• Easy snap-on design enables quick connection to NACS charging guns.

Cons

• Works for Level 1 and Level 2 AC charging only; it does not provide DC fast charging capabilities.
• Compatibility depends on physical fit and local regulations; users should verify fit with their specific charger models.

Specifications

Model	SA947
Rated current	80 Amps
Rated voltage	250 Volts
Ingress protection	IP54 (dust and water resistant)
Included items	Adapter, storage case, two lock keys
Use	Converts Tesla NACS Level 1 and Level 2 chargers to J1772

Our Verdict

The Schumacher SA947 adapter is a practical, economical tool for drivers who need access to NACS chargers while keeping their J1772 vehicle compatible; its keyed security lock and compact design add real everyday value. For those seeking a simple, portable way to expand charging options without complex installation, this adapter delivers solid utility and peace of mind at a reasonable cost.

Frequently Asked Questions

Will this adapter allow DC fast charging?
No, the SA947 is designed for Level 1 and Level 2 AC charging and does not enable DC fast charging.

Does the adapter prevent theft of an EV while charging?
The keyed security lock helps prevent unauthorized unplugging but does not secure the vehicle itself; it deters removal of the charging connector.

Is the adapter weather resistant for outdoor use?
Yes, the SA947 has an IP54 rating for dust protection and resistance to light water exposure, suitable for normal outdoor charging conditions.