Both adapters do the identical job — let a Tesla or NACS-port car charge at the huge installed base of J1772 stations — and both name a UL standard, so this is a close call on listing and price. Buy the LENZ for its UL 2251 listing. Buy the FOCSPROD for a UL 2252 listing at usually the lowest price. Both are AC only.
For a NACS-port owner, a J1772-to-NACS adapter is cheap insurance that multiplies where you can charge, and these two are the value finalists. We compile published specs and owner feedback and explain the trade-off; we have not bench-tested either.
What they both do
Both let a Tesla, or a 2025-onward NACS-port car, draw AC power from standard J1772 chargers — workplaces, older public stations, and any home charger with a J1772 cable. Both are AC only and both point one direction: a NACS car using a J1772 charger. For the reverse, you want a NACS-to-J1772 adapter.
The listings
This is the substance of the comparison, and both pass. The LENZ names UL 2251 and the FOCSPROD names UL 2252— both are recognized safety standards for EV connectors and adapters, and naming a specific standard is exactly what separates a trustworthy adapter from an unlisted bargain. Both are also rated well above any home circuit. Neither is a weak link on safety.
Price and fit
Both are inexpensive and pocketable, and the FOCSPROD usually undercuts the LENZ by a little. As value brands, the sensible move with either is a quick fit check on your specific connector on first use — it should seat firmly with no wobble. Buy on price and whichever fits your connector more snugly; the safety listings are comparable.
The one-line split:both do the same job and both name a UL standard (2251 vs 2252). The FOCSPROD is usually cheaper; the LENZ is the other well-reviewed option. It is close — buy on price and fit.
The verdict
This is genuinely close. Choose the FOCSPROD for the lowest price with a named UL 2252 listing. Choose the LENZ for its UL 2251 listing if it is similarly priced or fits your connector better. Either opens up the J1772 network to a NACS-port car; see them ranked in our best J1772-to-Tesla adapters roundup.
