<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I second what you are saying. Even for LiFePO4 batteries on Outback, I’d love to be able to the battery temperature (I.e. room temperature) via OpticsRE and also be able to edit the temp comp to zero. Of the handful of other brands that I use, most have this setting as a direct editable setting. <div><br></div><div>I do edit the value for different brands, sometimes it is hard to find the exact number for each brand, but it improves SOC accuracy and Specific Gravity vs Voltage readings when properly programmed. <br><br><div dir="ltr"><div class="" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; -webkit-text-size-adjust: auto;"><div class="ApplePlainTextBody">Maverick Brown<br>Off-Grid Solar Commander since 2006<br><b>Maverick Solar Enterprises, Inc.</b></div><div class="ApplePlainTextBody"><b> • Solar Commander Remote Power</b></div><div class="ApplePlainTextBody"><b> • SunFlow Systems Cathodic Protection <br></b>maverick@mavericksolar.com<br>512-460-9825</div><div class="ApplePlainTextBody"><br></div></div></div><div dir="ltr"><br><blockquote type="cite">On Aug 5, 2022, at 10:38 AM, William Miller via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"><meta name="Generator" content="Microsoft Word 14 (filtered medium)"><style><!--
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--></style><div class="WordSection1"><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">Friends:</span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">I am curious if any of you change the temperature compensation values for charge systems in lead-acid battery systems to comply with a battery manufacturer’s specifications.  Doing this would require that you drill down into the technical literature to find that value and then have inverter and charge control systems that allow you to make such a change.  </span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">I looked carefully through the Outback FXR and Mate 3s literature and found no such setting in the standard values (millivolts per Degree C per cell or per string).  I did find that Conext XW systems have that capability in the custom battery menus.  I am not sure about all of the other inverter and charge control systems out there but if you use any of them it is worth checking.</span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">This has become an issue for me in a warranty claim and I am just curious what others are doing in this regard.  This is also a heads-up to all of you that deal with lead acid to make sure you pick batteries that are compatible with your electronics, particularly VRLA batteries.</span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">Thanks in advance.</span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">William Miller</span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">Miller Solar</span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">17395 Oak Road, Atascadero, CA 93422</span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">805-438-5600</span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><a href="http://www.millersolar.com/">www.millersolar.com</a></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">CA Lic. 773985</span></p><p class="MsoNormal"> </p><p class="MsoNormal"> </p></div>
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