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Posted by Jim on May 16, 2008, 12:00 am
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> > > When performing PM services, how you you guys load test sealed lead ac=
id
> > > batteries?
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> > > I'm seeing two schools of thought around here:
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> > > Some say to disconnect the AC from the panel and let it sit for one
> > > minute, then check to ensure the battery has dropped less than 1 volt.=
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> > > Some say to disconnect the battery from the panel check the voltage th=
e
> > > battery holds at, connect a 1 amp load for a minute, remove the load a=
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> > > ensure the voltage has dropped less than 1 volt.
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> > > For the most part I am talking about household systems generally using=
> > > FA162's-168's or commercial situations using fire rated vista's or fir=
st
> > > alerts.
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> > > Thoughts?
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> > I have a 10 Ohm 25 watt, wirewound resistor with clipleads soldered on
> > the end.
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> > Disconnect the battery from the panel, put your volt meter across the
> > battery terminals. (should read something over 12 volts) Clip the
> > resistor across the battery terminals. Watch the voltmeter. If the
> > reading goes below 12 volts within aprox a minute, change the
> > battery.
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> > Watch it .......... the resistor gets hot.- Hide quoted text -
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> > ->
> Old school! =C2=A0I bet you use a Simpson 260 meter.- Hide quoted text -
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Nah, it fell off a ladder lotsa years ago. Nostalgically I still have
it down in my junk pile though.
But .... yes it is "old school"
You're gonna tell me it doesn't work .......... ?
I'll bet you have a shinny new battery tester in a bright plastic
yellow case with a meter in it, that cost $50.00 ....... that contains
a solid state equivalent of a 10 ohm 25 watt wirewound resistor.
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