What UPS do you use?
What size and brand UPS do you use?
Considering getting a backup supply after the last power outage.
I see Prusa article recommended at least 1500 VA for 34 minute tested run time.
RE: What UPS do you use?
CyberPower CP1000PFCLCD PFC Sinewave UPS System, 1000VA/600W, 10 Outlets, AVR, Mini-Tower, Black
As a side note, you will need to disable power panic. Offline and line interactive UPSes still have a transition time when switching to battery power. Depending on when in the AC cycle the switchover happens, it can trigger the power panic. The switch is fast enough that it doesn't actually impact printer functionality, but the printer has no way of knowing that.
RE: What UPS do you use?
The Prusa printer is on a Best Buy special, Cyberpower 650VA.
We did have a power failure during a print a couple of years ago. There was also a delay getting the backup generator on line, so it was about 15-20 minutes from lights out to lights on.
The printer did not miss a beat. Print continued like nothing happened.
I have a similar Cyberpower 850VA unit for the Ultimaker. It's been tested with a trivial print by unplugging the power and did not miss a beat, but never during an actual power failure.