Why is my Mac battery draining so fast?

Background apps, browser tabs, and GPU-heavy processes like video calls or creative tools often drain your battery without you noticing. Activity Monitor shows an unhelpful "Energy Impact" number with no units. PowerVigil shows real watts per app so you can identify the actual culprit.

What app is draining my Mac battery?

PowerVigil ranks every running app by real energy consumption measured in watts via Apple's IOReport framework. It also learns each app's normal baseline and alerts you when something spikes to 3x its usual power draw.

Is PowerVigil an iStat Menus alternative?

Yes. PowerVigil offers features iStat Menus doesn't have: actionable battery tips, anomaly detection, real watts measurement, and usage intelligence with health prediction. It's also lighter (776 KB vs 30+ MB) and costs less.

Does it work on Intel Macs?

PowerVigil is built for Apple Silicon (M1/M2/M3/M4). Core features like real watts measurement depend on IOReport APIs only available on Apple Silicon. Intel Macs are not officially supported.

Is it a subscription?

No. PowerVigil Pro is a one-time purchase with all future updates included. The Founding Edition at €5.99 is limited to the first 500 licenses, after which the price goes to €9.99. There is no subscription, ever.

Tips

Mac Energy Saver Settings: The Best Configuration for Battery Life

March 23, 2026

Apple Silicon Macs redefined battery life expectations. The original M1 MacBooks proved you could leave your charger at home. Yet even a highly efficient M3 or M4 chip will drain quickly if your system settings are working against you. Dialing in the best Mac Energy Saver settings guarantees your MacBook survives a long flight or a full day of meetings. These specific configurations will stretch your battery to its absolute limit.

The Evolution of Mac Energy Settings

If you run macOS Ventura, Sonoma, or Sequoia, the traditional “Energy Saver” panel is gone. Apple overhauled System Preferences into System Settings. This redesign renamed and reorganized all your power options. You will now find

Frequently Asked Questions

What are the best Energy Saver settings for MacBook?

Enable automatic display sleep (2-5 minutes), turn on optimized battery charging, and enable Low Power Mode when you need extended runtime.

Does "Put hard disks to sleep" save battery?

Marginally. Modern SSDs use very little power. The biggest battery savings come from display brightness, CPU usage, and closing power-hungry apps.

Should I use Optimized Battery Charging?

Yes, always. It learns your charging routine and delays charging past 80% until needed, reducing battery wear from staying at 100% for extended periods.

Ready to take control of your Mac battery?

Download PowerVigil Free