[time-nuts] Oncore battery backup

[Hal Murray]

paulswedb at gmail.com said:
> The chargers on the small UPS's 70-100 watt class are not really set up to
> do a good job on a much larger battery set.

What's the problem and/or what do the larger units do differently?

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Several/many years ago, I got a UPS when somebody on this list (I think) 
pointed out that the APC units would tell you the line voltage.  Mostly, I 
wanted something to run a PC that monitors line voltage if/when it went out 
so that worked out nicely.

I looked at the charts and did some quick calculations.  The smaller units 
don't have many watt-hours.  I ended up getting a big unit in order to get 
hours rather than minutes of holdover.


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