<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Larry,<div class=""><br class=""></div><div class="">So no MPPT in that situation and how much extra Vmp on the PV\u2019s is recommended above operating battery Voltage?</div><div class=""><br class=""></div><div class="">Thanks,</div><div class=""><br class=""></div><div class="">Jason</div><div class=""><br class=""></div><div class=""><a href="http://remoteenergy.org" class="">RemoteEnergy.org</a></div><div class=""><br class=""></div><div class="">
<div><br class=""><blockquote type="cite" class=""><div class="">On Jul 1, 2021, at 2:18 PM, <a href="mailto:larry@starlightsolar.com" class="">larry@starlightsolar.com</a> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=us-ascii" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Just thought I would throw out that with an Elite Power Solutions Li-ion battery system you can connect a PV solar source directly to the battery, no PV controller needed. The EMS will monitor each cell and open the charge relay when the battery is full. The dual solenoid controller will allow loads to operate uninterrupted. <br class=""><div class=""><br class="webkit-block-placeholder"></div><div class="">
<div style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><div style="orphans: 2; widows: 2;" class="">Use a DC down converter to share power to the 48V battery or loads.</div><br style="orphans: 2; widows: 2;" class=""><span style="orphans: 2; widows: 2;" class="">Larry Crutcher</span><br style="orphans: 2; widows: 2;" class=""><span style="orphans: 2; widows: 2;" class="">Starlight Solar Power Systems</span><br style="orphans: 2; widows: 2;" class=""></div></div></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br class="Apple-interchange-newline">
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<div class=""><br class=""><div class="">On Jun 30, 2021, at 1:50 PM, Dave Tedeyan <<a href="mailto:dave@sungineersolar.com" class="">dave@sungineersolar.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hi All, <div class=""><br class=""></div><div class="">I am going to be working with someone who plans to completely electrify a boat. The electric motor is meant to run on nine 12V batteries, or 108V. The motor manufacturer recommends a charger that can run on 120V or 240V. But has anyone seen a charger that can take solar power and directly charge a battery bank of 108V? The alternative that I see here is to have two separate battery banks, one for the motor, and one for house loads. Then we would have the solar charge a 48V battery bank, and then use an inverter to charge the 108V battery bank. It seems inefficient, although that may be the only choice.</div><div class=""><br class=""></div><div class="">A separate but related question: what is special about a marine inverter? If there is a 5kw charger for the battery bank, we will need a large inverter to handle this plus other AC loads, and I am not sure if there are "marine" inverters this large. And so other than concerns about getting wet, is there harm to putting a Radian, or a Sol-Ark on a boat?</div><div class=""><br class=""></div><div class="">Cheers,</div><div class="">Dave</div><div class=""><br class=""></div><div class="">-- <br class=""><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div dir="ltr" class=""></div></div></div></div><div dir="ltr" class=""><table cellpadding="0" cellspacing="0" style="border-spacing:0px;border-collapse:collapse;color:rgb(68,68,68);width:525px;font-size:11pt;font-family:Arial,sans-serif" class=""><tbody class=""><tr class=""><td width="125" valign="top" rowspan="6" style="font-family:Arial,sans-serif;padding:0px 10px 0px 0px;font-size:10pt;border-right:1px solid rgb(236,189,0);width:125px;vertical-align:top" class=""><a href="https://www.sungineersolar.com/" style="color:rgb(51,122,183);background-color:transparent" target="_blank" class=""><img border="0" alt="Logo" width="105" src="https://sungineersolar.com/wp-content/uploads/2019/08/Logo-Image-Only-1.png" style="border:0px;vertical-align:middle;width:105px;height:auto" class=""></a></td><td style="padding:0px 0px 0px 10px" class=""><table cellpadding="0" cellspacing="0" style="border-spacing:0px;border-collapse:collapse;background-color:transparent" class=""><tbody class=""><tr class=""><td valign="top" style="font-family:Arial,sans-serif;padding:0px 0px 5px 10px;width:400px;vertical-align:top" class=""><span style="color:rgb(236,189,0);font-size:11pt;font-weight:700" class="">Dave Tedeyan, P.E.<br class=""></span><span style="font-size:11pt;font-weight:700" class=""><font color="#ecbd00" class="">Owner | Sungineer Solar</font><br class=""></span></td></tr><tr class=""><td valign="top" style="font-family:Arial,sans-serif;padding:5px 0px 5px 10px;font-size:10pt;vertical-align:top;line-height:17px" class=""><span style="color:rgb(236,189,0)" class=""><span style="font-weight:700" class="">p: </span></span><span style="font-size:13.3333px" class=""><span style="font-size: 10pt;" class="">he | him | his</span></span><span style="color:rgb(236,189,0)" class=""><span style="font-weight:700" class=""><br class="">a: </span></span><span style="font-size: 10pt;" class="">1653 Slaterville Rd.</span> <span style="font-size: 10pt;" class="">| Ithaca, NY 14850</span><br class=""><span style="color:rgb(236,189,0)" class=""><span style="font-weight:700" class="">w:</span></span><a href="http://www.sungineersolar.com/" rel="noopener" style="color:rgb(51,122,183);background-color:transparent" target="_blank" class=""><span style="font-size: 10pt;" class=""> www.sungineersolar.com</span></a><br class=""><span style="color:rgb(236,189,0)" class=""><span style="font-weight:700" class="">c:</span></span><span style="font-size: 10pt;" class=""> (607) 288-2898</span></td></tr></tbody></table></td></tr></tbody></table></div></div></div></div></div></div>
<span id="cid:f_kqjvgemo0" class=""><Elco EP-70 datasheet.pdf></span>_______________________________________________<br class="">List sponsored by Redwood Alliance<br class=""><br class="">Pay optional member dues here: <a href="http://re-wrenches.org/" class="">http://re-wrenches.org</a><br class=""><br class="">List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" class="">RE-wrenches@lists.re-wrenches.org</a><br class=""><br class="">Change listserver email address & settings:<br class=""><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" class="">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br class=""><br class="">There are two list archives for searching. When one doesn't work, try the other:<br class=""><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" class="">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br class="">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<br class=""><br class="">List rules & etiquette:<br class="">http://www.re-wrenches.org/etiquette.htm<br class=""><br class="">Check out or update participant bios:<br class="">http://www.members.re-wrenches.org<br class=""><br class=""></div></div><br class=""></div>_______________________________________________<br class="">List sponsored by Redwood Alliance<br class=""><br class="">Pay optional member dues here: <a href="http://re-wrenches.org" class="">http://re-wrenches.org</a><br class=""><br class="">List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" class="">RE-wrenches@lists.re-wrenches.org</a><br class=""><br class="">Change listserver email address & settings:<br class=""><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" class="">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br class=""><br class="">There are two list archives for searching. When one doesn't work, try the other:<br class="">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/<br class="">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<br class=""><br class="">List rules & etiquette:<br class="">http://www.re-wrenches.org/etiquette.htm<br class=""><br class="">Check out or update participant bios:<br class="">http://www.members.re-wrenches.org<br class=""><br class=""></div></blockquote></div><br class=""></div></body></html>