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MacBook Battery Health: Capacity, Cycle Count and When to Replace

Where to check MacBook battery health, maximum capacity and cycle count, what Service Recommended means, and how to slow battery aging with macOS settings.

· 5 min read

Mac PerformancemacOS

Maxim listens to a glowing battery with a pulse line using a stethoscope; circular arrows of charge cycles surround it, the holographic cat traces one with its paw

Open System Settings → Battery: Battery Health shows Normal or Service Recommended, and the ⓘ button next to it shows Maximum Capacity. The cycle count is in System Information under Power; modern MacBooks are rated for 1,000 cycles.

A battery is a consumable. What matters isn’t that it ages, but how fast.

Where to check battery health

System Settings → Battery, the Battery Health row. There are two values:

  • Normal — the battery is working as it should;
  • Service Recommended — it holds noticeably less charge than when it was new, or isn’t working normally.

The ⓘ button next to it shows Maximum Capacity — how much the battery holds now compared with when it was new. The lower the percentage, the fewer hours between charges. On older versions of macOS the condition isn’t in Settings — Option-click the battery icon in the menu bar instead (Apple).

Where to find the cycle count

  1. Hold Option and click the Apple menu → System Information.
  2. In the Hardware section on the left, select Power.
  3. Under Battery Information you’ll find Cycle Count, along with Condition and Maximum Capacity.

The same in Terminal with one command:

system_profiler SPPowerDataType | grep -A3 "Health Information"

It prints the cycle count, condition and maximum capacity — and changes nothing.

What the numbers mean

A cycle is using up 100% of the charge, but not necessarily in one go. According to Apple: use half the charge today, recharge, use half tomorrow — that’s one cycle.

How many cycles a battery is rated for. For all MacBooks with Apple silicon and most models of recent years, Apple lists 1,000 cycles; the oldest models have 300 or 500. The exact figure for your Mac is in the table on the same page. Apple says a battery is designed to retain up to 80% of its original capacity at its maximum cycle count.

How to read it:

  • few cycles, high capacity, yet the charge melts away — it’s not wear, it’s apps. Find the culprit with the guide to MacBook battery drain;
  • capacity slowly dropping as cycles grow — normal aging;
  • Service Recommended — time to think about a replacement, but not urgently (see below).

According to Apple, you can keep using the Mac with this condition — it won’t harm it. If battery life no longer covers your day, arrange a service:

  • under warranty or AppleCare, replacing a defective battery is covered; without them, it’s paid;
  • have it replaced by an Apple Authorized Service Provider or an independent repair provider using genuine parts: Apple warns that non-genuine parts and untrained repairs may affect safety;
  • for Macs from 2020 and later, Self Service Repair offers genuine parts and manuals in some regions.

Before you go, test the hardware with Apple Diagnostics (how to run it) and make a fresh Time Machine backup.

How to slow battery aging

  • Optimized Battery Charging (macOS 11 and later). The Mac learns your charging routine and, when it’s going to stay plugged in for a while, holds charging past 80% until you need the battery. The battery menu shows Charging on Hold; Charge to Full Now cancels the delay (Apple).
  • Charge Limit — on Macs with Apple silicon in macOS 26.4 and later. In System Settings → Battery, click ⓘ next to Charging and pick a limit from 80 to 100%. Useful if the laptop is plugged in nearly all the time. The Mac still charges to 100% now and then — that keeps its charge estimate accurate.
  • Battery health management — on Intel MacBooks. It’s on by default and may temporarily reduce the maximum charge so the battery ages more slowly (Apple). Leave it on.
  • Heat is the main enemy. Apple gives 10–35 °C (50–95 °F) as the ambient range where a MacBook works best and warns that above 35 °C (95 °F) capacity can be permanently reduced (Apple). Don’t leave the laptop in a car in the sun or charge it under a blanket. Why a Mac heats up is in the guide to Mac temperature.
  • Storage. If the MacBook will sit unused for months, Apple suggests charging it to around 50% and turning it off.

What not to do

  • Don’t “calibrate” the battery by draining it to zero. A lithium-ion battery doesn’t need it; you can charge it whenever you like.
  • Don’t trust third-party “health checks”. Apple says outright that third-party battery apps may be inaccurate: rely on what macOS shows.
  • Don’t keep the charge “exactly at 50%” every day — for everyday use there’s optimized charging and the charge limit.

In the app

To be clear up front: Mac Resources doesn’t show battery health, capacity or cycles — the app takes only the charge level, whether it’s charging and the time estimate from macOS. For battery health, use Settings and System Information.

How the app is useful alongside:

  • the small Battery widget — a charge ring and the time to full or to empty; the medium Resources widget shows the charge as a ring next to CPU, memory and disk;
  • in the menu bar item’s menu, Prevent sleep has a “Turn off when battery is below 20%” option, so the Mac won’t stay awake until it’s empty.

The app is free and runs on macOS 14 and later. If the battery is fine but the MacBook drains fast, move on to the guide to MacBook battery drain.