[therein]

They still do. My m1, m1max and m4max Macbook Pros all build a positive static charge. It isn't even something that renders it "returnable" because I observed it on every single Macbook in the last 4-5 years so I just assume that's just how Macbook Pros are now.

[jacobolus]

This hasn't changed in at least 2 decades: I was getting zapped by Apple metal laptops circa 2004. But I have never encountered this problem when using a grounded plug.

It was also a lot worse for me when plugged into outlets in an old house in Mexico, especially when my bare feet were touching the terracotta floor tiles; it's not really an issue in a recently re-wired house in California with a wood floor, using the same laptops, power strips, etc.

If you are having this issue and you currently plug a 2-pronged plug into a grounded outlet, try using Apple's 3-pronged plug instead, and I expect it would go away. If you don't have grounded outlets, then that's a bit more complicated to solve.

[therein]

That's what confuses me, I am using the cable with three prongs, it is grounded. I am beginning to suspect some other appliance I am plugging into it that is responsible of the build-up of charge, but then why is it not finding its way to the ground... something doesn't add up but has been my experience consistently.

[jacobolus]

Perhaps the outlet isn't properly grounded?

[trallnag]

Is there any laptop with a metal body out there that does not have this issue? I've had two RedmiBook by Xiaomi and both has that vibrating electric feeling to them when plugged in.

[Liftyee]

It's an artifact of the charger.

This comment explains it well: https://news.ycombinator.com/item?id=45686427