I'll absorb the interactive vs. standby discussion when I have more time but just a word of caution. The worst thing you can do to a LiPo/LiIo is keep it fully charged. The internal negative electrode becomes plated quickly and the battery becomes almost useless. Until they have this resolved I'd stay away from them in this application that always requires a full charge. (Now maybe APC and others have this figured out be only charging to 80% but I haven't seen this to be true yet.)
Two computers failing - power issue
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Sky-Knight
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I have ONE in service, and it's the secondary battery on a server rack. So if the thing faults, I have a 5 year warranty to get it fixed. And while it's down, the 2nd power supplies in three servers aren't fed. But yes, I have concerns about the chemistry and do not trust it as a primary use because of that. They are VERY new from APC, this year in fact... buying version 1.0 is always risky. So, it comes down to do you trust APC or not, in my case I don't trust anything. But I did want to give it a try, because while the cost is high, if you toss in the replacement battery costs for five years, it winds up being less expensive.
Also, the packs are wired in the same as traditional UPSs, APC makes it seem like the batteries aren't replaceable, but they are. At least they were easily accessible on the 1000VA I installed this last Spring. So I'm hoping in 5-10 years I can just snag replacement batteries at Batteries Plus like I do for my normal UPSs.
For individual computers and small servers I like the APC BE700G, which has a mix of battery backup outlets and surge-only-protected outlets (for monitors, etc). I think the US equivalent model is the BN700. I would make sure that you clearly label the outlets with this type of UPS though, especially any spare outlets, to deter staff from plugging things in that they shouldn't, such a space heaters.
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Sky-Knight
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Sadly the electrical testing equipment you need to do that, costs more than the UPS does...
Personally, I'd put a unit in there on my dime for 30 days. If it fixes the problem then I'd invoice them. If not then I'd find a new home for it somewhere else in the future. I'd also set it to audio alarm when there is a power issue. They can hear it chirp and beep as proof the power is wonky.
Larry Sabo
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A hefty extension cord that you plug into another circuit that is (hopefully) healthy.
JoelM
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I am looking at APC units. Sometimes it's hard to tell for sure which ones are line interactive. What is the easiest way to show that.
They usually say right in the details. APC is excellent but I prefer Tripplite for a bigger bang-for-the-buck. Here's my favorite and it says Line Interactive in the details.
Sky-Knight
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I've been electrocuted by far too many Tripplite and Cyperpower devices to ever recommend them.
As for figuring out APC's topology, Back UPS is standby, Smart UPS is line interactive, Symmettra is usually double conversion, but can be others as well.
As for figuring out APC's topology, Back UPS is standby, Smart UPS is line interactive, Symmettra is usually double conversion, but can be others as well.
frase
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Power stripsor UPS are only limited to certain amount of surges, some people think they buy one and lasts forever. I personally advise replace power surge boards every three years.
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