How to make your MacBook battery last longer

Updated June 2026 · 4 min read

To get more runtime per charge, lower your screen brightness, turn on Low Power Mode, quit energy-hungry apps and disconnect peripherals. To extend the battery’s lifespan over years, keep it cool, avoid leaving it at 100% all day (use Optimized Battery Charging or a charge limit), and don’t routinely drain it to 0%.

“Make my battery last longer” means two different things — more hours today, and more years of healthy capacity. Here’s how to do both.

More runtime per charge

  • Lower brightness — the display is usually the single biggest draw.
  • Turn on Low Power Mode (System Settings → Battery).
  • Quit energy-hungry apps — see how to find what’s draining power.
  • Disconnect peripherals and external displays when you don’t need them.
  • Close idle browser tabs — and prefer Safari over Chrome for battery.

A longer lifespan (over years)

  • Keep it cool. Heat ages a battery faster than anything else — don’t block the vents on soft surfaces.
  • Avoid parking at 100%. Use Optimized Battery Charging or a charge limit, especially if it lives on a charger.
  • Favour shallow cycles. Topping up little and often is fine; deep 0–100% swings add wear. More on cycle count.

Myths to drop

You don’t need to “fully drain to recalibrate” modern MacBooks, and an occasional charge to 100% before a trip is perfectly fine. Consistency beats rituals.

Make the habits stick

Mac 4 Breakfast shows your live power draw, a health forecast, and a charging coach that flags when your habits are helping or hurting — so the long game is something you can actually see, not guess at.

Frequently asked questions

Should I drain my MacBook to 0% regularly?

No. Modern lithium batteries prefer shallow cycles. Routinely running to 0% adds stress; keeping roughly between 20% and 80% is gentler.

Does Low Power Mode really extend battery?

Yes. It lowers clock speeds and trims background activity, which can noticeably extend runtime during light tasks at a small performance cost.

Is it bad to leave my MacBook plugged in all the time?

It’s fine occasionally, but sitting at 100% in heat for long stretches is the main cause of capacity loss. Optimized Battery Charging or a charge limit prevents that.

See all of this, live, in one app

Mac 4 Breakfast shows your battery health, charging, every Apple device and smart insights — natively and privately, for one price.