What fills your disk, where it hides, and what is safe to remove. Every guide gives you a way to check it on your own Mac.
How Optimized Battery Charging decides when to stop at 80 percent, where to turn it on or off on a Mac, and why it sometimes seems not to work.
Read the guideWhy a MacBook holds its charge at 80 percent, what Optimized Battery Charging and battery temperature have to do with it, and how to charge to full today.
What Service Recommended means for a MacBook battery, how to check capacity and cycle count behind it, and when a replacement is worth it.
Why a MacBook battery percentage drops suddenly or jumps, what a worn battery and heavy load do to the reading, and how to let it settle.
Where to turn on the battery percentage in the menu bar on macOS, and why the number sometimes jumps or differs from what you expect.
Why a MacBook loses charge while connected to power, from a low watt charger to a heavy workload, and how to read the charger's wattage on your Mac.
How much wattage a MacBook needs to charge, what happens with a lower watt charger, and how to see the wattage your Mac is actually getting.
Whether a USB-C phone charger can charge a MacBook, how slow it is, and when it will not keep up with the Mac in use.
What the amber, green and flashing amber light on a MagSafe connector mean, and what to do when the light is off or keeps flashing.
How long a MacBook takes to charge from empty, why the last 20 percent is slower, and how charger wattage and use while charging change it.
Where to read the battery temperature on a MacBook from Terminal, the normal range, and what makes a battery run hot.
Why a MacBook warms up while charging, how to tell normal warmth from a problem, and the simple changes that keep it cool.
What a charge cycle is, how many cycles a MacBook battery is rated for, and how many a year of normal use adds. Ours: 619.