How to Set Up a UPS on macOS 26 Tahoe

Source: Dev.to

Introduction

In this article, I’ll show you how to set up a UPS (Uninterruptible Power Supply) on macOS. The example uses an APC UPS on macOS 26, but the process is similar for other UPS models. Some vendors may require additional software for full compatibility.

Connecting the UPS

1. Plug the UPS’s signal cable into a USB port on your Mac.
2. Connect the other end of the cable to the data/signal port on the UPS.

If you’re using a desktop Mac, a battery icon will appear on the right side of the menu bar (the same icon you see on a MacBook). Clicking the icon shows that a UPS is connected and displays the current battery level.

Checking the UPS has been detected

The UPS should appear in System Information under both Power and USB sections. Verify that it is listed there before proceeding.

Configuring

1. Open System Settings → Energy Settings.

2. At the top of the Energy Settings pane, you’ll see the UPS level and a UPS Options button. Click it.

3. In the UPS Options window, you can configure three settings:

   • Shutdown when UPS level falls below – choose a percentage (e.g., 25 %).
   • Other options – vendor‑specific features may appear here.

   Choose the settings that suit your workflow. I prefer shutting down when the UPS level drops below 25 %, which gives enough time to save work and power down safely.

4. Click Done to apply the changes.

What to expect during a power outage

• When mains power is lost, the UPS will emit a beep.
• A warning message appears on the screen, indicating that the system is now running on UPS battery power and prompting you to save documents and shut down.
• Once the battery level reaches the threshold you set (e.g., 25 %), macOS will automatically shut down.

That’s all there is to setting up a UPS on a Mac, assuming no additional vendor software is required.

I hope this guide was helpful—thanks for reading, and have a great day!