Apple Batteries are rated for 1000 Full Battery Cycles and / or 80% Capacity before needing Evaluation or replacement.
Recalibrate the Battery Here are the step you'll need to follow: Charge your battery to 100 percent. Once it's charged, use the MacBook/Pro/Air for about two hours while the charger is still plugged in and turned on. At this point, unplug the charger and use the Mac until it runs out of battery power.
According to Apple, The MacBook Pro battery is designed to hold 80% of its total charging capacity for at least these estimated battery cycle count numbers.How Many Cycles Can MacBook Battery Go Through?
MacBook Model | Max Cycle Count |
---|---|
All other models (including the latest MacBook Pros released in 2020 and 2021) | 1000 |
For most new MacBook models, that number is 1,000; for older MacBooks, the cycle count can be as low as 300.
Keeping your Mac plugged into the mains will reduce the cycle count— you can not over charge your Mac. There is no harm. If you keep your laptop plugged in most of the time I would recommend once in a while running the laptop on just the battery so the battery gets a little exercise.
Hold the Option key and click the Apple menu. Choose System Information. Under the Hardware section of the System Information window, select Power. The current cycle count is listed under the Battery Information section.
Factory-installed MacBook Pro 15" Retina (Mid 2015) batteries are rated to last 1,000 cycles. If your laptop won't turn on, turns off suddenly, has a "service battery" warning, or simply won't hold a charge, this replacement battery may be what you need to fix it.
About battery cycles
The cycle count is a one-way trip. It keeps increasing but can't go back. Just like the TIME. However, you can replace the battery to bring the cycle count to 0.
As confirmed by an iFixit teardown, the battery in all Retina MacBook Air models is designed to be removable. Apple intends for the battery only to be replaced by a professional.
Once you install batteries app in your iPhone, iPad, Apple Watch and Mac, all your devices' battery levels become available to every other device. So no matter what device you are on, you can check battery level of any of your devices.
Servicing the battery in your Mac notebook Some older Mac notebooks have removable batteries that you can replace yourself. Contact an Apple Authorized Service Provider or an Apple Store for assistance servicing a removable battery.