How to Check Your MacBook Battery Cycles and Monitor Long-Term Health Performance
Understanding MacBook Battery Health
The battery is one part of a MacBook that you should check when buying a used MacBook Pro or MacBook Air. Besides the SSD or hard drive, it is one of the few parts that can fail from normal wear and tear. But how exactly can you check battery health?
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What Is a Charge Cycle?
A charge cycle is complete when you have used (discharged) an amount that equals 100% of the battery's capacity – not necessarily all from one charge. So the counter is not the number of times the battery was charged from 0% to 100% and run down again, but how often its full capacity has been used up in total.
Since most people don't discharge their MacBook Pro/Air from 100% to 0%, but only partially, for example from 100% to 55%, the question is how partial discharges add up to one cycle.
With partial discharges, the percentages are simply added up, and each time the total reaches 100%, the number of charge cycles increases by 1.
Practical Example:
- Discharge from 100% to 75% (then charge) = 25%
- Discharge from 100% to 27% (then charge) = 73%
- Discharge from 100% to 58% (then charge) = 42%
Result: That's a total discharge of 140%, so the battery counter shows about 1.4 charge cycles.
Check Battery Cycles and Battery Health
Read MacBook Battery Cycles – Step-by-Step Guide
To read the battery cycle count and battery health (Maximum Capacity) on a MacBook Pro or Air, there's a simple way through System Settings (this works in macOS Ventura and all newer versions; on Monterey: Apple menu → About This Mac → System Report):
- Open System Settings (via the Apple menu or Spotlight)
- Select "General" in the sidebar
- Select "About" on the right side
- Click "System Report" at the bottom of the About section
- Expand "Hardware" on the left side
- Under "Hardware", select "Power"
- Here you'll find the important values:
- "Cycle Count"
- "Condition"
- "Maximum Capacity"
What Does "Maximum Capacity" Mean?
The "Maximum Capacity" value indicates how much capacity the installed battery still has compared to a new battery. This value decreases over time for every battery. For a new MacBook, this value is 100%.
Evaluating Battery Health
System Settings → Battery shows the assessment as "Battery Health": "Normal" means the battery is functioning normally. The other value Apple shows there is "Service Recommended". In the System Report, the "Condition" line shows the assessment.
Important: Apple rates the battery of every MacBook Air since late 2010 and every MacBook Pro since 2009 for 1,000 charge cycles. The battery is designed to retain up to 80% of its original capacity up to that count. Once the battery reaches that count, Apple recommends a new battery to maintain performance. The MacBook keeps working, just with a shorter battery life, and a MacBook battery replacement becomes worth considering.
Properly Evaluating MacBook Battery Cycles and Battery Health
You would normally assume that a high number of charge cycles is bad and a low number is good. In practice, it's not quite that simple. The reason is that it also harms a battery to be kept at 100% (fully charged) for long periods.
This happens when people use their MacBook Pro/Air almost exclusively at home at their desk, where it's plugged in all the time. So after a year, you might have only 10 charge cycles, but the battery has still lost a lot of "battery health".
Apple's "Optimized Battery Charging" Since 2020
Since 2020, Apple has built a feature called "Optimized Battery Charging" into macOS that addresses exactly this problem. macOS learns your daily charging routine and delays charging past 80% when the MacBook is likely to stay connected to power for an extended period – this shortens the time the battery spends fully charged, which is good for its lifespan.
When Buying Used
When buying used, you should always ask the seller for a screenshot showing all three values:
- Cycle Count
- Condition
- Maximum Capacity
Only with these values can you really tell the actual condition of the battery. If the maximum capacity is 80% or below, a battery replacement will be due soon. Keep this in mind when you negotiate the price.
Service and Further Information
Battery Replacement at Sadaghian
If you have a MacBook Pro or Air that needs a battery replacement, please contact us. We offer MacBook battery replacement at a fixed price.
- Replacement batteries for all MacBook models
- Installation in our Hamburg workshop
- 12-month warranty on labor and parts
We can replace batteries on both old and new MacBook models (including all M-series machines), so your MacBook lasts a full day away from the charger again. Current prices for battery replacement can be found in our price overview.
Contact us for a free consultation:
Conclusion: Check Battery Health Regularly
Check your MacBook battery health regularly, so that you recognize in time when a battery replacement is needed. With the method described above, you can quickly and easily find all the important information about your MacBook battery.
If your MacBook has other problems, remember: A repair at Sadaghian is often easier and cheaper than you think. We repair MacBooks of all generations – from classic Intel models to the latest Apple Silicon MacBooks.