How to look after a MacBook battery so it lasts longer
The habits that slow MacBook battery wear: heat, time at full charge and deep discharges, and which popular tips make no difference.
Can I improve my MacBook battery health?
Not the number you already have; capacity lost to wear does not come back. What you can change is how fast it falls from here.
What actually slows battery wear?
Heat, long periods at 100 percent and frequent deep discharges are the main causes. Keep the Mac on a hard surface, leave Optimized Battery Charging on, and plug in before the battery is nearly empty.
Which tips do not matter?
Unplugging at exactly 80 percent by hand, calibrating every month and keeping the Mac off the charger all day. macOS already manages charging; staying plugged in is fine: keeping a MacBook plugged in.
Common questions
Can battery health go back up on a Mac?
Rarely, and only by a point or two as the estimate updates. Lost capacity does not return.
Is it bad to let my MacBook die?
Occasionally is fine. Doing it often adds deep discharge wear.