Try Thermoil deslphator additive. Has good reviews. We are selling it. Jon Hill Sierra Solar Systems
On May 28, 2012, at 7:17 PM, "Larry Crutcher, Starlight Solar Power Systems"<[email protected]> wrote: > Dan, > > I'm perplexed. Where was anything mentioned about de-sulphators? Where was > anyone "slammed"? What in the world are you talking about? Perhaps you meant > to reply to someone else's thread. BTW, I do not recommend a desulfator or > pulser be installed on batteries. > > I'll reiterate my points: > 1. KC-120's from a certain production era fail and can be warranted. > 2. Applying enough load will cause full current to flow from a PV array. > 3. Sulfated batteries have high resistance causing a quick rise in voltage. > > I welcome your response but please reply off list. > > Respectfully yours, > > Larry > > On May 28, 2012, at 6:42 AM, <[email protected]> > <[email protected]> wrote: > > Seems I have a stalwart "Battery Specialist" in the neighborhood still > convincing folks that de sulphators are the smartest thing since sliced bread > (And slamming anyone who disagrees). In my experience, sparklers have little > to no effect on battery longevity and in most cases add unlisted, hazardous > and unnecessary wiring devices to a potentially hazardous environment. Is tar > and feathering still an acceptable means of dispute resolution.. or am I > totally missing something? tks db > > Dan Brown > Foxfire Energy Corp. > Renewable Energy Systems > (802)-483-2564 > www.Foxfire-Energy.com > NABCEP #092907-44 > > > -------- Original Message -------- > Subject: Re: [RE-wrenches] Troubleshooting Off-grid PV > From: "Larry Crutcher, Starlight Solar Power Systems" > <[email protected]> > Date: Sun, May 27, 2012 7:37 pm > To: RE-wrenches <[email protected]> > > Hi Eric, > > Check the dates on the KC-120 module label. If any were manufactured between > January 1999 and December 2002, they have or will fail. We have been > replacing these modules for over 8 years now. There was a defective solder > joint during manufacture. Kyocera will still replace them under warranty even > though they have no legal requirement to do so. They will ship you > remanufactured 120's and pay for return shipping. Contact Kyocera about the > procedure. > > If the batteries are sulfated, they will not produce the load necessary to > drive the current high. Capacity has nothing to do with it; internal > resistance does. You can test the array by pulling the voltage down (turn on > some big loads) at solar noon. This will force the controller into bulk and > reveal the maximum current the array can produce. I think you have two > problems here. With bad modules, you may not see much. > > It is typical for a controller to transition to float very early in the > charge cycle if the battery is sulfated. Look for a fast rise in voltage in > the morning. This is an indicator of sulfated battery. A healthy battery will > slowly climb in voltage. > > Let me k now if you need more understanding about batteries, charging and why > MOST of them never see old age. It's my speciality. > > Larry Crutcher > Starlight Solar Power Systems > (928) 342-9103 > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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