With either System Information or coconutBattery, you can quickly see how much capacity it’s lost and whether it needs to be replaced. If you’ve got an older MacBook, the battery almost certainly holds less charge now than it did when it was new.

Losing 15% capacity over almost three years isn’t too bad at all. When it was new, it had a capacity of 8755 mAh. When you run the app, you’ll see something like the screenshot below.Īs well as the cycle count, this app shows us that the battery now has a Full Charge Capacity of 7098 mAh. If you want a little bit more info that’s easier to understand, download the free app coconutBattery. For example, it tells you your battery’s current maximum capacity but not it’s original capacity. Apple's newest MacBooks are powered by the company's own Apple Silicon M1 processors, and because of that Apple was able to extend the battery life of its M1 MacBook Air and MacBook Pro far beyond. System Information has most of the data you need to assess your battery’s health, but it’s not very well laid out and could provide a bit more information. Apple calims all-day battery, but the truth is it depends on what your using your Mac for. If there is a problem with your battery, the “Condition” entry (which shows Normal in our example) will display something like “Service Battery.” Get a Bit More Information with coconutBattery How long will a MacBook Air battery last From my personal experience as well as a poll I ran on reddit, the average MacBook Air battery charge will last a few hours short of what’s advertised from Apple (12 hours).

The battery doesn’t need to be replaced yet, but it probably will need to be done later this year. The MacBook in our example has a cycle count of 695.

Mac air battery life