Don’t keep your Mac laptop charged to 100 percent all the time. Here’s why
If you leave your MacBook, MacBook Pro, or MacBook Air plugged in all the time—no matter the vintage—the battery suffers wear for being charged to full. Over time, the maximum charging capacity diminishes and you lose many minutes—even hours—of usable time. It is just a characteristic of the lithium-ion batteries in laptops and nearly all modern electronics.
Here is a quick list of the best practices for managing your MacBook’s battery.
- Routinely unplug your laptop, as frequently as daily, and let it drop its power down to the 30 to 40 percent range.
- Don’t fully discharge your battery regularly—that is, don’t let it run down to zero. As Battery University (not a degree-granting institution) notes, “If at all possible, avoid full discharges and charge the battery more often between uses.…There is no memory and the battery does not need periodic full discharge cycles to prolong life.”
- With modern Apple laptops, in macOS Catalina’s 10.5.5 release you can make sure that Battery Health Management is enabled in the Energy Saver preference pane’s Battery tab by clicking Battery Health.
- In macOS 11 Big Sir, recent Mac laptops will have more modern options enabled by default.
If you’d like more details, read on Macworld How-To