Lots of folks swear by battery impedance testers. I did not have good luck
with them. I think if you characterized a new battery and then tested its
impedance throughout its life you could develop some specs that are
meaningful but different cell manufacturers and cell sizes have different
impedances. I was never able to correlate impedances to whether or not a
battery was likely to fail.
My only tried and true approach is a load test.
Run the system on battery only and graph the voltage drop. Bad cells drop
quick. Do that every quarter and you are sure to catch things before they
become a catastrophe.
-----Original Message-----
From: Darren Shea
Sent: Thursday, August 2, 2018 10:18 AM
To: af@af.afmug.com
Subject: [AFMUG] Battery testers?
We have UPS systems at pretty much every site, and we know that our 12V AGM
batteries will need to be replaced at regular intervals, but we'd like to be
able to test the batteries to make sure we prioritize the ones which are in
the worst shape.
I checked on Amazon, and there are dozens of different battery testers of
this type, ranging in price from under $20 to $150, but it's hard to sift
through all these devices to find the ones that would work best for our
purpose.
Do any of you use any portable battery testers to check the health of your
batteries in the field? Which features or units did you find are
worthwhile/necessary, and which units and features are useless or worse?
Thank you,
Darren
--
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
--
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
