There is significant prior art around larger-than-Apple-magsafe magnetic-attach power connectors - if you ever used a Japanese-made domestic deep fryer in the 8

There is significant prior art around larger-than-Apple-magsafe magnetic-attach power connectors - if you ever used a Japanese-made domestic deep fryer in the 80s or 90s, you'll have noticed the same concept. Design IP is a different matter of course.