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TEST APC Smart UPS

What should I need to check on APC Smart UPS as a Preventive maintenance ?

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Tomas Valenta
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The most important is battery condition (capacity) and for your information how long will this UPS serve your equipments before it shut down.
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AXISHK

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There is a "test" button on the UPS, should I press it to check for potential problem ?

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That will work, but the UPS software will tell you the same thing.

Lasting time depends on load. My UPS will start shutting things down in 15 minutes (lots of capacity left), but with only a network load (computers off or laptop on battery), it is good for a couple of hours.
That will work, but the UPS software will tell you the same thing.

In my own experience, this is not always true.  The UPS software makes the potentially invalid assumption that everything in the UPS is normal.  As examples, if a wire has corroded or an output MOSFET has failed, the only way to discover that is to exercise the UPS.
It normally works for me and for my clients. I do not keep these in damp environments, and short of an outright failure, they do not corrode inside.
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You are very welcome and I was happy to help.
Exercising the UPS for a full deep cycle shortens the time for the next deep cycle.  Don't do it.

It's best to just keep track and replace the batteries on a proper fixed schedule, based on how many deep cycles you've had and how many years you've had them.  Having dealt with a location that has quarterly outages that last 2 hours or more, I've had experience with UPS battery life.  At 1 cycle per quarter, 8 cycles means just about 2 years of battery life before replacement is definitely needed at this site.

That's in line with the deep cycle life of full house/full business battery backups for Solar Panels for the same amount of cycles.  They basically told me the same thing that I found from experience when I got a quote for a commercial location.  If you don't ever deep cycle your lead acid batteries, they can last up to about 5 years, but if you want to keep the same uptime, 4 years is when you swap them.

The sliding scale is 8 full deep cycles or about 4 years, whichever comes first.  That basically means that each full deep cycle shortens the life by about 6 months.  Powerchute can really only tell you charge levels by checking the voltage and doesn't really keep track of the cycling.  It's only really good for telling you if the UPS failed earlier than expected, because one of the cells failed sooner than expected to generate a lower voltage.