Sorry, @Spamming_Eddie , I run my Shapeoko with a Makita router on a APC 1500 UPS all the time (and all my other electronics on their own UPS.) I’ve done the same with a APC 1000.
I’ve finished several pieces now when the power goes off completely. There’s always at least 30 minutes of UPS power available to finish a cut. The machine doesn’t even know the power went off.
APC UPS 1500VA Sine Wave UPS Battery Backup, BR1500MS2 Backup Battery Power Supply, AVR, 10 Outlets