My APC unit batteries I think lasted about 3-4 years at a guess, Not kept records, I brought a new UPS instead of just replacing batteries.

I have also brought a second portable sized UPS for my modem now as well meaning if I get a powercut my VDSL and most of my network should stay online now.

Has my UPS ever kicked in? yes even in a city it has probably easily kicked in dozens of times. In about 5 years have had maybe around 10 full on power cuts (most less than 10 minutes), and probably at least 3 to 4 dozen brownouts.

Also there is correction applied to the voltage if its out of spec by decent UPS.

Edited by Chrysalis (Fri 09-Apr-21 08:57:44)

Edited by deleted (Fri 13-May-22 00:46:57)

I love how people ask for advice and other peoples advoce is why are you bothering to want that,

They do want it so its up to them suggesting they should want to do it is unhelpful

The original question was

When installing network equipment is it user requirements, best practice or common practice to instigate the use of a UPS to cope with short term power outage eg 1-20mins,

They were asking opinions on whether it was common practice - I answered in that vain based on the question - they didn't say "can you advise what UPS to get" - in fact the person posing the question already had a UPS..

The post is also over 4 years old!