Most of Apple’s modern laptops can handle 1,000 charge cycles before needing a battery replacement. Follow along for how to check MacBook battery cycle count as well as its condition and capacity.
Battery charge cycles, condition, and capacity all go hand-in-hand. For some context, here’s how Apple says your MacBook calculates its charge cycle count:
A charge cycle happens when you use all of the battery’s power—but that doesn’t necessarily mean a single charge.
For example, you could use half of your notebook’s charge in one day, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two. In this way, it might take several days to complete a cycle.
Read more at 9to5Mac.com