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I quite like Lenovos charger though. It's the only one I have not managed to destroy in a year of owning a laptop.

It could use magsafe. That thing has a death grip on my laptop.

Apple definitely has a patent on that. (I'm not exactly sure how patents work, but they filed one on Magsafe as late as 2017)

There's quite a few USB-C magnetic breakaway adapters on Amazon etc

Apple knows that if they tried to sue every random manufacturer making $5 magsafe clones they would end up losing more money on legal fees.

If Lenovo did it though...

They could also easily make their own break off usb-c.... but they don’t.

And Apple got the idea for magnetic break-away connectors on tabletop deep fryers. It should not have been patentable.