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mtbdudex

macrumors 68040
Original poster
Aug 28, 2007
3,312
7,458
SE Michigan
I bought my MacBook Pro M3 fully loaded (Max, 64GB memory, 4TB SSD).
It's battery is now at 92%, shows 50 cycles, I've got AppleCare good thru Nov-19-2026.

Other M3 owners, how is your battery doing?
I use mine 97% un-plugged, at night may plug it into the USB-C if I'm near it.

This seems "low" to me, like iPhone's does Apple replace the battery if 79% or at what % is it deemed "bad" and warranty?

Screenshot 2025-11-11 at 6.04.01 AM.png


Screenshot 2025-11-11 at 6.05.21 AM.png
 
This seems "low" to me, like iPhone's does Apple replace the battery if 79% or at what % is it deemed "bad" and warranty?
Apple will replace Mac battery when max charge capacity is below 80% of new max charge capacity. Doesn’t matter if it’s under warranty or not.
 
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