Good to know. I did google and found a suggestion to not turn off the UPS because it will stop charging the battery. Your information contradicts this. I wonder if the charging of the batteries even when the UPS is off varies depending on the manufacturer?
--- In Avid-L2@yahoogroups.com, Ross Flint <rossf@...> wrote:
>
> Hi John,
>
> Since you haven't had any takers yet...
> The advice from APC is that you should always keep the UPS plugged in to
> the mains, but switch it off when it doesn't need to be on. Switching it
> off means that it doesn't output power, but it continues to charge the
> batteries as necessary. The advantage of switching it off, as I
> understand it, is simply that if the power should go out the battery
> will drain much more slowly than if the UPS is on (it has to power
> itself, even if everything else is off).
> Conversely, the best way to kill the batteries is to leave the UPS
> unplugged for a long time - this allows them to do a "deep discharge"
> which damages the cells.
>
> Hope that helps,
> Ross
>
>
> On 07/10/2013 17:06, John Moore wrote:
> > I recently inherited a rack which came with a UPS. I replaced the
> > batteries and it seems to be working fine. I'm curious if I should
> > always leave the UPS on even with the computer shut off or should I
> > power it down when the system is not in use. At work I always leave
> > the UPS on but I've found that almost every UPS I find on jobs has
> > dead batteries. Does anyone have a recommended procedure that might
> > extend the useful life of the UPS batteries?
> > John Moore
> > Barking Trout Productions
> > Studio City, CA
> > bigfish@...
> >
>
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