#UPS recommendation
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What's the total power draw? Can you put them all on one power strip and use a Kill-A-Watt or a Ponnie PN2000 or similar? How long do you want them to run? Do you want to try and get the Optiplex to shut down gracefully instead of just powering off?
In general, if you want a plug and play, an APC Back-UPS Pro 1500 with AVR (automatic voltage regulation; i.e. it compensates for brownouts and slight overvoltage without going to battery) and true since wave output has the juice for quite a lot, though you'll replace batteries every 2-4 years. Eaton has some true sine wave equipment with AVR as well that should be reliable.
Anything small from APC will be fine. I rather like my Back-UPS CS 500. Now on its third battery. Works well with apcupsd though that’s also a bit out dated. HA integration is great.
I honestly hate APC, every, single, one, of their UPSes that I've purchased have crapped out on me inside 2 years. (like 5-7 so far)
I understand lithium ion batteries significantly degrade by 2 years... I replaced the batteries and the electronics were bad.
Looks like the Back-UPS CS 500 is still being made, 15 years or so after I bought mine. Cool.
Odd. We used a lot of em at work. It almost seemed like they had a monopoly. But that personal unit has been going strong for 15 years. 3rd battery. Good old lead acid. Reconditioned batteries for the 2nd and 3rd and yeap they hold the charge, I test them.
I use my APC Bavk-UPS Pro 1500 since about 10 years to buffer my NASes, Router, Switches, Smart home System and my SIP phones (PoE) and have changed the battery pack twice. I'm also on the 3rd battery pack. I'm happy with it so far. Size depends on time you wana buffer by a power outage.
I user CyberPower and they have been great...cheaper than APC
I use the eaton 3s and eclipse models. No annoying hum, doesn't get too hot, uses < 5W standby and is cheap.
i've had a second-hand Eaton Ellipse Pro that lasted like 2 years
i've read so much disappointed customers with Eaton and APC consumer-grade UPSes that i fell back to an older, dumb MGE Ellipse
probably from the 2000s
it's been great for my usage so far (simple 50W homelab) but last week the (8 years-old) battery died without notice
i'd have liked the UPS to warn me but eh 🤷♂️ longevity/features/price, pick two
from my research, seems like nobody wants to fill the gap between shitty consumer UPS and professional UPS
and pro UPSses need a minimum current draw in order to function properly, which i can't provide with 50W
Unifi are releasing a prosumer UPS soon (1 rack Mount, 1 free standing): https://uk.store.ui.com/uk/en/category/integrations-power-tech/collections/unifi-power-tech-ups/products/ups-tower-eu