UPS battery advice

[Scott Gravenhorst]

I'd like to add one little note...  Doug is right here, IMHO...
Procedurally, I would take my systems under UPS test down to a
point where I know they are running (IE DOS world, sit at a 
DOS prompt), -> but where a sudden power down will not cause damage.
For example, I would not do this test while my machine is running
a windows GUI session, just a DOS prompt.  This is a point at which
it is "OK" to turn off the power.

BTW, we do this where I work on occasion.  Doing so has uncovered 
mis-power-wiring of equipment as well as old, unusable batteries.

dougt at cancerboard.ab.ca wrote:
>
>On Mon, 10 Apr 2000 11:58:55 -0700 "nss at hevanet.com" 
><nss at hevanet.com> wrote:
>
>> A few years back I bought a UPS/filter that will run all my 
>> gear and computer for 20 min or so, and I'll say I'll never 
>> plug my stuff into the wall without somthing similar again!
>
>If your UPS is 2 years old or more: CHANGE THE BATTERIES!!
>
>Most computer UPS units use sealed lead-acid batteries for 
>back-up power. Most UPS units are run with the power on, 
>charging the internal batteries, 24 hours a day, 365 days 
>per year. After a couple of years you will find their 
>capacity has been SEVERELY diminished due to overcharging, 
>so when the power goes out, so does the UPS. You should 
>also test that the UPS can power your equipment for at 
>least 10 minutes on a regular basis (monthly). People tend 
>to forget that there are batteries inside these units, 
>until they no longer work.
>
>----------------------
>Doug Tymofichuk
>dougt at cancerboard.ab.ca
>
>

-- Scott Gravenhorst
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