signatureTelemetry. 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 testerDoes 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/> This e-mail message contains information from InfoWest, Inc and is for the sole use of the intended recipient(s) and may contain privileged, proprietary or confidential information. Unauthorized use, distribution, review or disclosure is prohibited. If you are not the intended recipient, please contactrco...@infowest.com by reply email and destroy the original message, all attachments and copies.
On the bench I've charged them fully, measured the voltage, then a put a
known load on them for a set period of time and measured the voltage
afterward. Same idea. Like you said....couldn't find an appropriate
tester.
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