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Yup, some of the keys on my 2016 MacBook Pro started not working reliably and thankfully Apple had their extended warranty program for that and they replaced the entire top cover (keyboard, trackpad, aluminum housing) + battery. This was about 5 years after buying it. It was pretty nice because I had like 1200 cycles on the battery or something crazy like that!

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My personal record is two battery replacements (AppleCare, both due to capacity being below spec given the number of charge cycles*) and two logic board replacements (GPU failure, first under AppleCare and then out-of-warranty due to a recall) on one MacBook Pro (2011, 17").

* Incidentally, I've received at least half a dozen battery replacements under AppleCare over the years for this reason, going back to the original Titanium PowerBook G4. As far as I can tell, leaving a (Power/Mac)Book plugged in, closed, and running most of the time kills batteries in a warranty-preserving fashion.

My laptop is plugged in most of the time and I use a menu bar app called "Al Dente" that sets the max charge at a certain value (I set 80%). I'm hoping this will help with battery longevity, however I have no real idea if it will. My iPhone it will cap charging at 80% sometimes until the morning to help prevent the battery being at 100% for too long, so I figured 80% was a good number for the MacBook as well.

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