The temp sensor suggestion makes a lot of sense. Also, what is the specific gravity? I suspect they are sulphated, maybe severely. But that's easily remedied with an equalization charge with the generator.
We have a 24v single string of the very same batteries in an off grid system and if they don't get at least quarterly the max charge possible from a dual stack of SW4024's and 12kW Kohler funny things start to happen. That's about 200 amps depending on a few factors. Voltage and trimetric will indicate a full charge but the SG is way down below 50% and of course SG typically trump other indicators. (IE, water wasn’t just added) Warning: Be very careful about equalizing with the generator in the summer time. I "know a guy" who had a set HUP's do a thermal run away from "him" just last summer and "he" really thought he was watching things closely. Rob Shappell called "him" back at 9PM Rob's time from a birthday party on a Friday night to explain what happened to me....er, I mean that guy I know. Much appreciation to Rob and Jean! They are great at supporting their product. Travis Creswell Ozark Energy Services -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of jay peltz Sent: Saturday, August 02, 2008 11:27 AM To: RE-wrenches Subject: Re: [RE-wrenches] Surrette Battery Question I presume there is a temp sensor on the CC and inverter. And if the battery temps are higher then the voltage termination would be lower which could explain it. Or, I have seen them get off calibration which would cause a difference in charge set points. jay peltz power On Aug 2, 2008, at 10:29 AM, Drake Chamberlin wrote: > Hi Allan, > > On a previous thread, it seems that Surrette batteries like a fast > charge periodically. At one time (as I recall) is was recommended > to give them a C/5 once a week, but the company said that was not > necessary. I don't know of C/13 to C/18 charges would be enough. > Can your customer run the generator for a quick charge after > cycling them down? > > Drake > > At 08:29 AM 8/2/2008, you wrote: >> Did this customer check the voltage of the individual batteries/ >> cells? Maybe there is a weak cell developing. Sometimes EQing can >> take a long time. I do not "buy" that batteries need to be cycled >> to stay healthy. >> >> Todd >> >> jay peltz wrote: >> >>> _______________________________________________ List sponsored by Home Power magazine RE-wrenches@lists.re-wrenches.org http://lists.re-wrenches.org/listinfo.cgi/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org No virus found in this incoming message. Checked by AVG. Version: 7.5.526 / Virus Database: 270.5.10/1586 - Release Date: 8/1/2008 6:59 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.526 / Virus Database: 270.5.10/1586 - Release Date: 8/1/2008 6:59 PM _______________________________________________ List sponsored by Home Power magazine RE-wrenches@lists.re-wrenches.org http://lists.re-wrenches.org/listinfo.cgi/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
