Guides

MacBook battery guides

Plain answers to common MacBook battery questions: charge limits, 100% charges, macOS 27, calibration, health and keeping a Mac plugged in.

By , who makes Chargeberry · Published · 1 min read

Every guide here is written by the maker of Chargeberry and checked against Apple’s own support pages and the battery tests Chargeberry runs on a real MacBook. Where macOS can do something by itself for free, the guide says so first.

How to limit MacBook charging to 80% Three ways: macOS’s Charge Limit, Optimized Battery Charging and an app, with steps for each. How to set a Mac charge limit below 80% 60% or 50% for a desk Mac: which apps can on macOS 14–26 and on macOS 27. Why does my Mac still charge to 100%? The eight usual reasons, from macOS’s own calibration charges to two apps fighting. macOS 27 and charge limits Why battery apps stopped working on macOS 27, which work now, and what they can no longer do. How to calibrate a MacBook battery What calibration does and doesn’t do, a manual method, and one-click calibration. Is it bad to keep a MacBook plugged in? What really wears a battery out, and five habits that keep it healthy for years. MacBook battery health calculator Work out health, wear per cycle and how far the battery is from Apple’s 80% mark.

According to Chargeberry’s charge-rate record, charging from 0 to 79% took about 1.2 minutes per percent, 80 to 89% about 2.5 minutes, and 90 to 99% about 3.0 minutes. On that Mac the last 20% takes nearly as long as the first 50%, so stopping at 80% skips the slowest part of every charge.

Measured by Chargeberry: Chargeberry’s own charge-rate record on a MacBook Air (M1, 2020) with a 30 W USB-C charger: 104 one-percent steps, as recorded on October 28, 2026. A different Mac or charger changes the times.

Keep your MacBook’s battery fresh

Chargeberry is $5.99, once. No subscription, no account, free updates, and it works on up to 3 of your Macs.

  • A limit from 50 to 100%
  • Pauses charging when hot
  • Full by a time, or every weekday
  • Calibration, health and Wrapped
Chargeberry for MacOne-time purchase · Version 1.1.2

$5.99once

Buy — $5.99

macOS 14 Sonoma or later · Apple silicon MacBooks (M1 or newer) · 4.9 MB · Signed and notarized by Apple

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The best battery charge limiters for Mac in 2026Six ways to stop a MacBook charging to 100%, from free built-in macOS settings to paid apps, compared on price, features and macOS 27 support. Mac battery charge limiters, comparedChargeberry side by side with AlDente, BatFi, batt, Battery Toolkit and macOS’s own Charge Limit, including where each one is the better pick. Chargeberry supportSetup takes about a minute: open Chargeberry, approve its helper once, paste your license key and pick a limit. Here’s how, and how to fix problems.