@thequacker - Knockoff most likely! Apple didn’t alter the design and even the MagSafe 2 is basically the same design.
Many years ago I was supporting a large international engineering firm. One of the engineers forgot his charger so he went shopping from the hotel to the local computer shop near where he was staying and bought one, went back to the hotel plugged in his system and went to dinner, when he came back there was a bunch of fire men and equipment blocking the lobby. When he finally got to the desk they told him his room was badly burnt and his belongings where being held. They gave him a room for the night but told him due to the fire he will need to find other accommodation as they where fully booked with the loss of the floor. The investigation proved the charger was at fault. And the hotel sued for 3 million, after a lengthy court battle it cost the company better than 4 mill and we needed to check every charger almost a fifth where knockoffs as people often just grabbed one when at the meetings getting some else’s in the process.
We embossed the company logo on the good chargers and we disposed of the knockoffs and if some came in with one they would need to pay for the replacement.