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From: druck <news@druck.org.uk>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Backup power supply
Date: Fri, 15 Mar 2024 13:43:53 +0000
Organization: A noiseless patient Spider
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On 15/03/2024 10:51, Ahem A Rivet's Shot wrote:
> 	Make that 5 minutes * 500W/5W or 500 minutes which is indeed a long
> time but a lot shorter than the 150 hours you were expecting.

If you want 150 hours, you need to be looking at a backup generator, so 
your UPS only needs to last as long as it takes for your generator to 
fire up.

That's usually a couple of minutes for professional diesel ones, but as 
its home setup it might take you a few minutes to connect it up and pull 
the starter cord on a cheap petrol one.

It might then take a few more minutes to drain the tank of the sludge 
that used to be fuel last time you used it, and to run to the garage to 
get some fresh petrol.

It might take a few more minutes if your spark plugs have been fouled as 
you didn't clean it after use, and your air filter has a hundred 
different types of bugs living it.

So make sure the UPS lasts an hour or 2.

Oh and once you've managed to get it going, and it's making a tremendous 
racket, just remember everyone else in the neighbourhood who is without 
power will be turning to look in your direction...

---druck