[Nut-upsuser] Question about Tripp-Lite UPS life span

[Larry Fahnoe]

Well the last rites have been performed for this little UPS. 

I put the old batteries back in and no change, still dead. I did check the polarity of the new batteries and they were okay. The UPS gave me 25 years, now it's time to rest. I'm no electronics expert but I now have a better understanding of the likely failure (a cap or IBGT). Given the potentially serious consequences of a massive failure, better to respect the life-cycle of the components and replace it.

Thanks for the information and suggestions!!

--Larry

------- Original Message -------
On Tuesday, February 7th, 2023 at 7:11 AM, Julian H. Stacey <jhs at berklix.com> wrote:


> > If you can, I suggest
> > to also test the new batteries using a decent load ( an incandescent 12V
> > automotive light bulb for instance - something in the region of 100W ; I
> > have one from my old car, when testing batteries I connect in parallel
> > main and high beam )
> 
> 
> Cars are not wired for bulbs to use both filaments simultaneously,
> so presumably bulbs are not designed to operate with both filaments
> on, so bulb will get hotter than designed for, increasing burn/
> melt/ glass fracture risk.
> 
> I prefer to connect single filaments of 2 or more glass bulbs in parallel.
> 
> I've collected half blown bulbs for decades. Tell friends & car
> service garages you'd like their old blown headlamp bulbs, when
> they have to replace for new; always just one filament of 2 blows
> in use.
> 
> While 1 or 2 bulbs are sufficient for quick checking & calculating
> internal resistance of batteries, it's nice to have more bulbs in
> a collection, to build a mesh of parallel & series to adjust load
> current to usually 1/10th of battery's rated Amp hour capacity, for
> doing timed discharge tests.
> 
> 
> PS Now we're all replacing 230 V (or 110 in USA) incadescent bulbs
> for LED to reduce power, I save those too: May help make graduated
> test loads for inverters from solar cells + battery systems, or in
> case LEDs start to fail from premature aging during next pandemic
> or economic/societal disruption, or voltage surge (whether from
> fluctuations of human controlled power net, lightning surge or solar
> / EMP pulse etc).
> 
> Cheers,
> --
> Julian Stacey www.StolenVotes.UK/jhs/ Arm Ukraine, Zap Putin. Brexit broke UK
> 
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