RE: [Nolug] AC and UPSes

Hi Chris.

I don't believe that this is a problem with the types of batteries used in
UPS's. It mainly applies to Ni-CAD and somewhat to Ni-MH type batteries.

John

    John Souvestre - Southern Star - (504) 888-3348 - www.sstar.com

-----Original Message-----
From: owner-nolug@joeykelly.net [mailto:owner-nolug@joeykelly.net] On Behalf
Of Chris Reames
Sent: Tuesday, June 22, 2004 10:39 AM
To: nolug@joeykelly.net
Subject: RE: [Nolug] AC and UPSes

Periodically, you need to unplug a UPS and let it die.
This helps prevent the battery from developing a 'memory'.
It doesn't help much if you have critical systems plugged into it, but its
better to have a planned outage than a "Oh, guess what, the UPS battery is
dead." situation.

My suggestion is to charge and drain the UPS several times then check to see
if it holds a charge.
What I do is unplug the UPS and time how long it takes to get to 20% with
the equipment I have running through it.
If I notice a decrease in time do the charge and drain procedure. (note:
don't do this if a hurricane is comming)

Anyway, thats my 2 cents.
Chris R.

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Received on 06/22/04