Cap battery charging at 80% to reduce wear — via Apple Support

Hidden settinglow riskmacOS 26.4 Tahoe and later (Apple silicon)

If your MacBook lives on the charger, keeping the battery below 100% helps it age more slowly. macOS Tahoe 26.4 added a built-in Charge Limit, so you no longer need a third-party app for this.

Takes effect right away

How to do it

  1. Open System Settings > Battery.
  2. Click the ⓘ button next to Charging (or Battery Health).
  3. Set Charge Limit anywhere from 80% to 100%, then click Done.
Apple silicon Macs only. The Mac still charges to 100% now and then to keep its battery readings accurate. When you need a full battery for a trip, choose Charge to Full Now from the battery menu. On older macOS versions, Optimized Battery Charging (same screen) does a similar job automatically.

Sources

Source reviewed
2026-11-02
Link checked
2026-11-02
Tested hands-on
Not by Oddbyte.Me

Oddbyte.Me hasn't tried this on every macOS version, so keep the undo handy.

batterycharge limit80 percentbattery healthoptimized chargingtahoe

More in Performance & Power

Check memory pressure, not 'free RAM' — via Apple Support

Tricklow risk

A Mac that shows almost no free memory is usually fine: macOS keeps recently used files cached in RAM so apps reopen faster. The number that matters is the Memory Pressure graph in Activity Monitor, which combines free memory, swap and cached files.