How to save battery on Mac — 7 settings that actually help

MacBook battery life varies enormously based on what you're running and what macOS is doing in the background. The good news is that the biggest gains come from settings changes, not hardware — and most of them take under a minute. Here are seven that make a measurable difference.

1. Enable Low Power Mode

Low Power Mode is the single biggest lever available in macOS. It reduces CPU and GPU clock speeds, lowers the display refresh rate (on ProMotion displays), dims slightly, and aggressively throttles background activity. Apple estimates it extends battery life by up to 50% under some workloads — in practice you'll see 20–35% for typical use.

To enable it: go to System Settings > Battery and set Low Power Mode to Always or Only on Battery.

Or via Terminal:

# enable Low Power Mode
sudo pmset -a lowpowermode 1

# disable Low Power Mode (restore normal performance)
sudo pmset -a lowpowermode 0

The trade-off is real: CPU-intensive tasks like video export or compilation will run noticeably slower. For browsing, writing, and video calls the difference is barely perceptible. Most people get better results keeping it on during the day and turning it off when they're at a desk.

2. Reduce display brightness

The display is the largest single power draw on a MacBook — often more than the CPU. Dropping brightness from full to roughly 70% can add 30–45 minutes of real-world battery life on longer sessions. Use the keyboard brightness keys (F1 / F2 on older keyboards, or the equivalent Touch Bar or function key controls) or drag the slider in Control Center.

Also: enable Auto-Brightness in System Settings > Displays. It uses the ambient light sensor to adjust brightness automatically — often keeping it lower than you'd manually set it in dim indoor environments.

3. Shorten display sleep

If the display stays on while you're reading or thinking, it's draining battery for no reason. Set it to sleep after 2–3 minutes on battery:

1. Open System Settings > Battery.
2. Click the Options button (macOS Ventura and later) or look for the Battery tab directly.
3. Set Turn display off after to 2 minutes or 3 minutes when on battery.

This is one of the highest-impact changes for people who frequently step away from their Mac. The system can still do CPU work with the display off — it's not the same as system sleep.

4. Disable Power Nap on battery

Power Nap wakes your Mac periodically during sleep to check email, sync iCloud, and run Time Machine. When you're on battery this is almost always wasted energy — the data will sync within seconds when you wake the Mac anyway. Disable it for the battery power source:

1. Open System Settings > Battery > Options.
2. Turn off Enable Power Nap.

Or via Terminal:

# disable Power Nap on battery only
sudo pmset -b powernap 0

# re-enable if needed
sudo pmset -b powernap 1

See our full guide on disabling Power Nap on Mac for more detail and the Terminal approach.

5. Check which apps are using the most battery

Before tweaking settings, it's worth knowing what's actually spending your battery. Go to System Settings > Battery and look at the Battery Usage section — it shows which apps consumed the most energy in the last 24 hours or last week. Click the clock icon to see a timeline view.

If a browser is near the top (it almost always is), look at how many tabs are open. Each Chrome or Firefox tab is its own process. Switching to Safari can also help — Apple has optimized it specifically for battery life on macOS, and it often outperforms Chrome by 20–30% on the same workload.

6. Turn off Bluetooth when you don't need it

Bluetooth uses a small but continuous amount of power scanning for and maintaining connections. If you're not using AirPods, a wireless mouse, or another Bluetooth device, toggle it off from Control Center (the icon in the top-right of the menu bar) or go to System Settings > Bluetooth and switch it off.

This matters most on longer sessions without a charger — Bluetooth on its own isn't a huge draw, but every milliwatt adds up.

7. Close what you're not using

macOS suspends background apps fairly aggressively, but some apps — particularly Electron-based ones like Slack, VS Code, Notion, and Figma — run background processes even when their window is hidden. Close apps you're not using, not just hide their windows. Cmd+Q quits; Cmd+H or clicking the red dot only hides.

Check Activity Monitor (Applications > Utilities > Activity Monitor) and sort by Energy Impact. Anything in the double-digits for extended periods is worth closing when you don't need it.