@EVCar , this is a worm hole I have been down personally. getting electronics approved under CE for use in the EU. It costs MANY thousands of dollars to get a product certified under UL or ETL. And UL and ETL are themselves NRTLs!
Trust me but just saying so does not ALWAYS make it so. Amazon and eBay are littered with tens of thousands of items with phony UL certifications for China. Amz and Ebay do nothing to check if the UL or ETL stamps are legitimate. And its not easy at all to check if an item really has been UL or ETC or CSA approved. The Lectron adapter is not actually certified by UL, but was certified by a totally independent lab to the published UL standards. The UL 2252 JUST CAME OUT. SGS is a very old, quality EU testing firm. SGS certified that the unit complies with the newly published UL 2252 in March.
In light of the brand new UL 2252 standard, I would only be concerned about a UL or ETL from a Amazon product with a goofy name. And even then, the likely hood of a phone cert if great.
Many have been waiting for UL 2252 for a LONG TIME. A2Z claimed the first unit meeting the certification. If you really want to get into the weeds, look at this Redditt
Redditt Link UL 2252 discussion
I can easily see why Lectron, as a marketing firm out of China, would want a UL cert from a NRTL like SGS in Switzerland. Makes great marketing sense. A unique selling point -- for a time.
So, I agree, a UL or ETL is nice. But I put more trust in the electronic engineers at Lucid, with tons of experience in designing, testing building and using HV DC circuits, to properly review the circuits in an adapter.
Last note: in light of the new UL standard, it could well be the Lucid's adapter has not finished the process. It can take MONTHS from submittal of the product until certification. I am told UL is backed six months on certs.