Check your battery cycle count in System Settings

Your Mac tracks how many times your battery has charged and discharged — called a cycle count — and stores this information where you can read it. Open System Settings, click General in the left sidebar, then select About. Click the System Report button at the bottom right. In the window that opens, click Power in the left sidebar. Look for the line labeled Cycle Count — that number is what you need.

The cycle count appears as a single number, usually between 0 and several hundred depending on how old your Mac is. One cycle means your battery went from fully charged to fully drained and back to fully charged again. Partial charges do not count as full cycles — if you charge from 20% to 80%, that is one-fifth of a cycle.

This method works on any Mac with a built-in battery running macOS 10.15 or later. If you have an external battery or a Mac with a removable battery (older models), the cycle count may not appear in System Report, and you will need to use the terminal method instead.

Key Takeaways

  • Your Mac's cycle count appears in System Settings > General > About > System Report > Power, listed as a single number.
  • One cycle equals a full charge from empty to full, and partial charges count as fractions of a cycle.
  • If System Report does not show cycle count, you can retrieve it using the Terminal with a single command.
  • Apple considers most Mac batteries at the end of their useful life when they reach 1,000 cycles, though the exact number varies by model.

Use Terminal if System Report does not show the cycle count

If you do not see a Cycle Count line in the Power section of System Report, open Terminal (search for it in Spotlight by pressing Command+Space). Paste this command and press Enter: system_profiler SPPowerDataType | grep "Cycle Count". The terminal will return your cycle count on the next line.

Terminal works on older Macs and some configurations where the graphical System Report does not display battery information. If the command returns nothing, your Mac either has no built-in battery or the battery is not recognized by the system — this sometimes happens after hardware repairs or on very old models.

Understand what your cycle count means for battery health

A higher cycle count means your battery has been used more and is closer to the end of its useful life. Apple designs Mac batteries to retain up to 80% of their original capacity at 1,000 cycles, though some models are rated for different numbers. A MacBook Air, for example, is typically rated for around 1,000 cycles before the battery should be replaced, while some newer models may have different specifications.

Cycle count alone does not tell you the whole story. A Mac with 500 cycles might have a battery in poor condition if it was exposed to heat or charged in extreme temperatures. A Mac with 800 cycles might have a perfectly healthy battery if it was always charged in normal conditions. System Report also shows Condition, which tells you whether Apple considers the battery Normal, Replace Now, or Service Recommended — that is often more useful than the raw cycle count.

If your cycle count is below 300 and your Mac is more than three years old, your battery is in good shape. If your cycle count is above 1,000, your battery is likely near the end of its rated life and may hold a charge for noticeably less time than it did when new.

Check the battery condition status alongside cycle count

In the same Power section of System Report where you found Cycle Count, look for the Condition line. This field shows one of four states: Normal, Replace Now, Service Recommended, or Not Charging. Normal means your battery is working as expected. Replace Now means the battery has degraded enough that you should plan a replacement soon. Service Recommended means the battery is not performing at its rated capacity and Apple recommends service.

Not Charging appears when your Mac is plugged in but the battery is not accepting a charge — this usually means a hardware problem rather than normal wear. If you see Not Charging, your Mac may still run on power, but the battery itself needs attention.

The Condition field is more important than cycle count for deciding whether to replace your battery now or wait. A Mac with 600 cycles and Normal condition can safely be used for months or years longer. A Mac with 800 cycles and Replace Now condition should be scheduled for replacement within weeks.

Track your cycle count over time to predict battery replacement

Write down your cycle count today and check it again in three months. Divide the difference by three to estimate how many cycles per month your Mac uses. If you use 30 cycles per month and your battery is rated for 1,000 cycles, you have roughly 30 months (two and a half years) before replacement becomes necessary. This rough estimate helps you plan ahead instead of being surprised by a battery that suddenly fails to hold a charge.

Cycle count increases faster if you use your Mac on battery power frequently and slower if you keep it plugged in most of the time. A Mac that is plugged in 90% of the day might gain only 5 cycles per month, while a Mac used on battery for 8 hours daily might gain 20 cycles per month. Your actual usage pattern will determine how quickly you approach the rated cycle limit.

Understand what does and does not count as a cycle

A full cycle means your battery went from 100% charge to 0% and back to 100%. If you charge from 50% to 100%, that counts as half a cycle. If you charge from 75% to 100%, that counts as one-quarter of a cycle. macOS adds these fractions together, so five charges from 80% to 100% equal one full cycle.

Leaving your Mac plugged in overnight does not add cycles — only actual charging from a lower percentage to a higher one counts. Turning your Mac off and on does not affect cycle count. Using your Mac while it is charging does not change how cycles are counted. The only thing that matters is the total amount of energy that has flowed out of and back into the battery.

Frequently Asked Questions

Is 500 cycles a lot for a Mac battery?

No. Apple rates most Mac batteries for around 1,000 cycles, so 500 cycles means your battery is roughly halfway through its useful life. Check the Condition field in System Report — if it says Normal, your battery is performing as expected and does not need replacement yet.

Can I reduce my Mac's cycle count?

No. Cycle count only goes up as you use your battery. You cannot reset it or reduce it. You can slow down how fast cycles accumulate by keeping your Mac plugged in more often, but the count itself is permanent.

What should I do if my cycle count is very high?

Check the Condition field first. If it says Normal, your battery is still working within spec and does not need when ready replacement. If it says Replace Now or Service Recommended, contact Apple or an authorized service provider to schedule a battery replacement. High cycle count alone is not an emergency — condition matters more.

Does my cycle count affect my Mac's performance?

Not directly. A high cycle count means your battery holds less charge, so your Mac will run on battery for less time. But when plugged in, your Mac runs at full speed regardless of cycle count. Performance only drops if the battery fails completely or if your Mac is running on battery power and the charge is very low.

Can I check cycle count on an iPad or iPhone?

No. iPads and iPhones do not display cycle count in their settings. You can only see battery health as a percentage in Settings > Battery > Battery Health. Macs are the only Apple devices that show cycle count to users.