On 1/18/2018 10:18 AM, Drake wrote:
A Concorde AGM PVX 3050T recently failed in a bank of 8. Larry mentioned
a couple of brands experiencing problems. These batteries are 4 years
old and have been kept in float in an off grid system, never stressed.
Hopefully Concorde batteries are not going the way of Trojan L-16s. Has
anyone else had problems with Concorde?
About three or four years ago we started experiencing problems with
Concorde PVX batteries. I use them in smaller systems. Typically in
their range of smallest to around 200 amp/hours. Telemetry sort of
applications with small wind and/or PV powering small loads. Lots of
floating and generally pleasant cycles.
Problems:
Leaking battery terminals when batteries are laid on their sides.
Low capacity. Not testing at anywhere near their rated capacity after
just a few cycles.
Dead on arrival, even with current date code.
Seemingly high self discharged. Full charged battery reading 10.5 volts
after 6 weeks of storage.
I had a rash of these sort of problems. Perhaps 10 batteries out of 30
over the course of a year. The distributor was pleasant and replaced
batteries at no charge. But I decided the Concorde batteries didn't seem
to be acting as premium as they used to. So I switched to bog standard
AGM batteries for most small applications. Universal Battery and
PowerSonic and our battery distributor's house brand of Chinese
batteries. Tried some Full River batteries last year and they seem to be
doing fine.
The funny thing is I have small systems from early 2000's still running
on their original PVX batteries. But I don't feel that would be possible
with the batteries I was getting when I finally gave up.
--
-James Jefferson Jarvis
APRS World, LLC
+1-507-454-2727
www.aprsworld.com
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