I have never used these but have noticed them on the website when buying other stuff: http://www.powerwerx.com/batteries-chargers/cba-iv-4-pro-computerized-battery-analyzer-commercial-use.html
From: TJ Trout via Af Sent: Friday, September 19, 2014 2:43 AM To: [email protected] Subject: Re: [AFMUG] battery tester Carbon pile battery load tester is what you need. On Sep 18, 2014 3:07 PM, "Randy Cosby via Af" <[email protected]> wrote: Ah, figured this out. Batteries have been getting down to 20c around noon, temperature compensation of .12V per degree below 25c, 56.6V is where we top out. Just right. On 9/18/2014 3:35 PM, Randy Cosby via Af wrote: Before anyone mentions it, I know some of these batteries are being charged too high. I have my charger (Tristar MPPT-60) set for gel battery voltages, and the combined voltage is supposed to top out at 56v. It looks like we're getting a little higher than that, I need to figure out why. On 9/18/2014 3:14 PM, Randy Cosby via Af wrote: Getting back on topic (and trying to avoid double-spaces)... I have two strings of four GEL batteries, all of them the same age. They are all being charged by the same solar panels/controller. Positive lead is connected to battery 1, negative to battery 4. Load is connected the same way. I am now monitoring each battery separately with a pair of sitemonitor 4-input modules. One battery I know is bad - 1.1 (bank 1 battery 1). It drops under 12v at night. The graphs are puzzling to me. The other batteries I'm not sure on. Each seems to have a different/profile slope when charging, but similar (but not identical) slope when discharging. Take a look: https://dl.dropboxusercontent.com/u/4059343/graff%20voltage%20graps.png Anyone care to venture a guess as to why we're seeing these differences? On 9/18/2014 1:57 PM, Chuck McCown via Af wrote: 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 Sent: Thursday, September 18, 2014 1:06 PM To: [email protected] 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. -- Randy Cosby InfoWest, Inc 435-674-0165 x 2010 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 contact [email protected] by reply email and destroy the original message, all attachments and copies. -- Randy Cosby InfoWest, Inc 435-674-0165 x 2010 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 contact [email protected] by reply email and destroy the original message, all attachments and copies. -- Randy Cosby InfoWest, Inc 435-674-0165 x 2010 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 contact [email protected] by reply email and destroy the original message, all attachments and copies. -- Randy Cosby InfoWest, Inc 435-674-0165 x 2010 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 contact [email protected] by reply email and destroy the original message, all attachments and copies.
