<div dir="auto">Wrenches<div dir="auto">I have also used the turtle heater and it's just enough to keep everything up and operating. Insulation and a warm thermal mass makes it all hold together</div><div dir="auto">Funtimes</div><div dir="auto">Jerry</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Nov 5, 2023, 2:03 PM Allan Sindelar via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="ltr"></div><div dir="ltr">I did this modification to a 16kW Blue Ion LiFP bank during installation, following this guide, Darryl. Blue Planet had sent me this. Shortly after initial installation a plumber had installed an electric space heater in an unheated space with water pipes, which of course soon drained the batteries to LVD, so the BMS had shut them down. The BMS won’t accept a charge until the batteries were about 1 1/2 degrees F above freezing. I did a winter service call and worked with BP tech support. I plugged the same space heater into a portable gennie and pointed it to the batteries, and as soon as the BMS registered above freezing it allowed recharge from the array. </div><div dir="ltr">As I recall, besides the bubble/Mylar insulation (which was surprisingly easy to install) the system used an 18w terrarium heating pad in the bottom shelf under the batteries and a 9w pad on the upper shelf, controlled by an external freeze-prevention thermostat. With a sufficient whole-house array it’s proven to be a negligible load. </div><div dir="ltr">It’s a standalone system. I don’t recall the low-temperature discharge limit; it’s quite a bit lower than the minimum charge temperature. And summer heating is irrelevant with the thermostat. The rest you can get from Blue Planet. </div><div dir="ltr">Allan</div><div dir="ltr"><br><blockquote type="cite">On Nov 5, 2023, at 2:03 PM, Darryl Thayer via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:times new roman,serif;font-size:large">Great site, Allan, but many facts still need to be included. Was there a discharge or charge going on? How much power was being drawn by the heaters? If this is for a standalone system, energy consumption is very important. What is the lower temperature cell discharge limit of Blue Planet? What concern was taken for the summer and overheating? What are the blue planet-specific heat and weight of the batteries? More questions, but I doubt if anyone else is interested. Thank you.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 26, 2023 at 11:49 AM Sindelar Solar via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div bgcolor="#FFFFFF">
You might be able to get some ideas from this. It's worked well for
me on one job.<br>
Allan<br>
<br>
<div>On 10/25/2023 2:24 PM, Dana Orzel via
RE-wrenches wrote:<br>
</div>
<blockquote type="cite">
<div>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif">I
know we have had this run thru before & wanted to see if
any new options for heating LI batteries.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif">I
have an 8 pack of Homegrid LI batteries that is off grid
with Radian 8048a. Originally, they were not going to be
there for the winter, now it is a possibility they may
visit. Plenty of solar 6KW+, hopefully generator back up
waiting on delivery currently.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif">Currently
located in main room high ceilings/log cabin.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif">Looking
at creating an insulated closet & using terrarium
heaters controlled if over 51volt heater on AC from
inverter. Or just boxing in with 3-4” of blue board
Styrofoam….<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif">Has
anyone else done something similar?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif">Has
anyone done this & it did not work?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif">Thought
& suggestions…..<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:"Century Gothic",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Century Gothic",sans-serif">_________________________________________________________<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Century Gothic",sans-serif;color:rgb(56,86,35)">Dana
Orzel </span><span style="font-size:12pt;font-family:"Century Gothic",sans-serif;color:rgb(56,86,35)">GREAT
SOLAR WORKS! <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Century Gothic",sans-serif;color:rgb(56,86,35)">C
– 208.721.7003 E – <a href="mailto:dana@solarwork.com" target="_blank" rel="noreferrer"><span style="color:rgb(56,86,35);text-decoration:none">dana@solarwork.com</span></a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Century Gothic",sans-serif;color:rgb(56,86,35)">W
- www. <a href="http://greatsolarworks.com" target="_blank" rel="noreferrer">greatsolarworks.com</a> <a href="http://www.solarwork.com/" target="_blank" rel="noreferrer"><span style="color:rgb(56,86,35);text-decoration:none">www.solarwork.com</span></a><u></u><u></u></span></p>
<p class="MsoNormal"><i><u><span style="font-size:12pt;font-family:"Century Gothic",sans-serif;color:rgb(56,86,35)">“Responsible
Technologies for Responsible People since 1988!”<u></u><u></u></span></u></i></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
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<p class="MsoNormal" style="line-height:normal"><b><span style="font-size:12pt;font-family:"Times New Roman",serif">Allan Sindelar</span></b><span style="font-size:12pt;font-family:"Times New Roman",serif"><br>
</span><a href="mailto:allan@sindelarsolar.com" target="_blank" rel="noreferrer"><span style="font-size:10pt;font-family:"Times New Roman",serif">allan@sindelarsolar.com</span></a><span style="font-size:12pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:10pt;font-family:"Times New Roman",serif">RETIRED</span><span style="font-size:12pt;font-family:"Times New Roman",serif"><u></u><u></u></span></p>
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