I got twelve 5W Apple A1265 and A1385 USB Cube Adapters which look real. No spelling errors or other obvious visual issues, but one weighted 23 gram instead of 25 gram.
The one I used for reference was still the original sealed box bought at the Apple store, guaranteed to be 100% authentic.
When I tested the resistance between the prongs of the original with a Fluke 87V it showed Open Loop (OL).
From all others only one showed that same behavior, most others show a resistance starting at 0.7, 2.1, or 17.4 MegaOhm (MΩ) and crawling up.
Other observations, the original was manufactured by Lite-On, the one that also tested OL has the mark Artesyn the rest in the MegaOhm range have the marks Artesyn, Salcomp or Flextronics. The 23 gram was the only one that started at 0.7 MegaOhm.
Can you reproduce this test with some other real Apple Cube adapters?
The one I used for reference was still the original sealed box bought at the Apple store, guaranteed to be 100% authentic.
When I tested the resistance between the prongs of the original with a Fluke 87V it showed Open Loop (OL).
From all others only one showed that same behavior, most others show a resistance starting at 0.7, 2.1, or 17.4 MegaOhm (MΩ) and crawling up.
Other observations, the original was manufactured by Lite-On, the one that also tested OL has the mark Artesyn the rest in the MegaOhm range have the marks Artesyn, Salcomp or Flextronics. The 23 gram was the only one that started at 0.7 MegaOhm.
Can you reproduce this test with some other real Apple Cube adapters?