Re: Cascading UPSs

On 1/10/2025 1:50 PM, Bertrand Sindri wrote:

Don Y <blockedofcourse@foo.invalid> wrote:

And, the home/SOHO markets have got to be "one time" purchases

 The home/SOHO market is much more likely a "disposable appliance" where
UPS'es are concerned.
 They buy one.  When the ear peircing continuous scream of "battery
gone" eventually occurs, they trash it and buy another new one.

I suspect the sorts of people who would have bought these are the
same sorts who would have bought a (crappy) "tape backup" unit
(nowadays, that would be a shingled external disk) thinking they
were "doing things right".
The reality would eventually sink in when (as you say) it "demanded
attention".  (By contrast, the tape/disk backup would silently
become "unused")
I brought a small unit home for a neighbor to power her CPAP
(as she was talking about buying one).  I suspect the same
will happen with her usage -- outages being so infrequent
(and, she would have to be using the CPAP, at the time, for
it to matter) that it just becomes a bulky "outlet strip"
by the bed.

A small subset that would be willing to swap the battery /might/ look
at the manufacturers cost for a replacement battery and then conclude
that it is cheaper to just trash it and buy the one on sale on Amazon
right now, because new battery for old unit is 110% the cost of the
sale item on Amazon.  So those become disposable appliances as well.

What I find more amusing is the number of (likely) commercial users
who must be discarding them -- that assumption based on the size and
cost of the units I see (2U, $1K+).  This week's pile of discards:
<https://mega.nz/file/JzhE3R5C#2q6j98sBJ2uSW7z5VjmoJcYCgYIUnz8kVcZlpW6j4-Q>
(sigh)  Maybe there should be a warning printed on the package to
discourage unnecessary purchases?  <frown>