Ups - Tag - Defingo Nethttps://defingo.net/tags/ups/Ups - Tag - Defingo NetHugo -- gohugo.ioen-usodd.grape2822@defingo.net (William E. Whitaker, Jr)odd.grape2822@defingo.net (William E. Whitaker, Jr)Sun, 25 Oct 2026 00:00:00 +0000My UPS Said 32 Minutes. It Lasted 14.https://defingo.net/posts/ups-runtime-reality/Sun, 25 Oct 2026 00:00:00 +0000odd.grape2822@defingo.net (William E. Whitaker, Jr)https://defingo.net/posts/ups-runtime-reality/For years my homelab ran on two small APC Back-UPS units, simply because I didn’t have enough battery-backed outlets on one. A 600 VA unit carried the NAS and the Proxmox host. A 550 VA unit carried the modem, gateway and switch. Both were “fine” according to their status lights.

Then I actually tested one.

The Test

I pulled the plug on the 600 VA UPS on a quiet evening and watched. The load was about 21%. NUT, the Network UPS Tools daemon, estimated 32 minutes of runtime.

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