I have a 2014 MacBook Air. It's done 978 charging cycles & still runs very well. I understand it's good for 1000 charging cycles. What happens when I get to 1000? Do I need a new battery, or does it just get a bit slower?
MacBook Air 11″, macOS 10.15
The 1,000 cycles is Apple's best guess. Some last more; some fewer. What you need to watch is the percent of original capacity. Once below 80%, Apple recommends you have the battery replaced. That's irrespective of cycle count.
An aging battery's first clue to degradation is decreased run time, not necessarily a slower clock speed or slower operation in general.
You can continue to operate at greater than 1,000 cycles or less than 80%, but batteries are consumable items and it's generally prudent to replace on Apple's schedule.
The 1,000 cycles is Apple's best guess. Some last more; some fewer. What you need to watch is the percent of original capacity. Once below 80%, Apple recommends you have the battery replaced. That's irrespective of cycle count.
An aging battery's first clue to degradation is decreased run time, not necessarily a slower clock speed or slower operation in general.
You can continue to operate at greater than 1,000 cycles or less than 80%, but batteries are consumable items and it's generally prudent to replace on Apple's schedule.
coconutBattery app will give you all sorts of details, but 3 hours max run time is a strong indication of its degraded condition.
Thank you. It is saying service required. Is that how I know it's under 80%? The battery only lasts for 3 hours of continuous usage and it feels quite warm after 2 hours
Battery life - MacBook Air early 2014
