The laptops in the Apple MacBook line are engineered to last for years of normal use. However, if there was one piece of hardware that might need to be replaced at the time, it was the internal battery.
Your computer’s battery can only last a certain number of cycles, depending on your MacBook model. When these cycles are exhausted and your computer reaches its maximum cycle count, you will start to notice a drop in battery performance. Ultimately, you need to decide whether to keep using the laptop on just wired power, or buy a new battery.
About the number of cycles
Every time you use your MacBook, its battery goes through a charge cycle. A cycle is when you use all the battery power. The important thing to understand is that every time you charge your computer battery, you don’t run out of cycle counts. For example, if your MacBook’s battery is at 40% and you charge it, it’s currently 60% charged. The next day, you charge the battery at 50%, with 10% remaining in the cycle. In this case, you’ve had two days to run out of a cycle. In another example, you charge your MacBook’s battery 50% one day and 50% the next day. Here, it takes a full two days to use up a single charge cycle.
As you continue to use your MacBook, the battery’s charge capacity will slowly decrease. In fact, the charge cycle won’t last that long. When the device reaches its maximum cycle count, it should retain up to 80% of its original charge capacity, and it will drop from there.
Find your battery cycle count and health
To find the cycle count on a MacBook, hold down the Option key while clicking the Apple menu in the upper left corner. Select System Information. Under the Hardware section of the System Information window, select Power. You will see the current cycle count in the “Battery Information” section.
In the same section, you can also find the battery condition and its current maximum capacity percentage. If the battery condition is not “OK”, you should contact Apple Technical Support.
Maximum number of cycles
Apple has a list of maximum cycle count runs for each MacBook, MacBook Air, and MacBook Pro version. Newer MacBook models have a maximum cycle count of 1000, while earlier models have a cycle count of 300 to 500.
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