Might be worth looking around if you can find a used Eaton enterprise model locally, they're much better quality than APC and similar ones.
this post was submitted on 08 Oct 2024
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Selfhosted
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At least 900VA capacity
Just being pedantic here, but VA is a power rating, not a capacity rating. A UPS has both a power rating that tells you how much power it can deliver at any given moment and a capacity that tells you for how long it can do so.
Can be monitored with NUT over USB or Ethernet
NUT has a hardware compatibility list.
I have older 1500VA FSP UPS, I don't think that exact model is available anymore, but it's been solid for several years. It currently has 3rd or 4th set of batteries and they are standard bulk batteries, so replacements are easy to find from anywhere. Only problem I've had with that is that on display it doesn't give out clear warnings when batteries degrade and it has crashed my system few times in a power outage, but I've been lazy and didn't bother to properly monitor it nor have scheduled battery replacements, so that's mostly on me.
Eaton seems to be pretty solid too, but I don't have a ton of experience on any of their models. Local suppliers had dirt cheap PowerWalker UPS's a few years ago, but one of them didn't survive when battery died, so maybe I got what I paid for. Those worked fine too, but apparently they cooked the carging circuit when battery degraded.
This is of course just my own experience over a few models, but personally I wouldn't spend my money on APC. Propietary batteries and multiple failures after battery replacement at work few years back were enough to choose something else.