We are able to time of discharge by reviewing graphs from our CTMs once
AC power has stopped.
Depending on what the overall current draw is which we find by the load
in watts on each port of the CTM.
Its not 100% but it gives me a good idea about what we should get out of
a AGM 100ah battery.
On 09/18/2014 02:57 PM, Chuck McCown via Af wrote:
signature
Telemetry. Just watch the slope of the discharge voltage at night. I
have tried to use impedance meters several times at different
companies and cannot get results that predict failures.
If you have a battery that should last several days, disconnect the
solar panels and watch the telemetry.
*From:* Randy Cosby via Af <mailto:af@afmug.com>
*Sent:* Thursday, September 18, 2014 1:06 PM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* [AFMUG] battery tester
Does anyone have a recommended battery tester for AGM and Gel
batteries at solar sites? I have batteries from 100AH to 225AH. Most
of the automotive models seem to be concerned with cold cranking amps,
pretty irrelevant for us.
--
<http://www.infowest.com/> Randy Cosby
InfoWest, Inc
435-674-0165 x 2010
infowest.com <http://www.infowest.com/>
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