<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 Dave,<div class=""><br class=""></div><div class="">A whole new world. </div><div class=""><br class=""></div><div class="">I didn’t realize how expensive the backwoods are, wow.</div><div class=""><br class=""></div><div class="">There are many out there for around $1200 but not a lot in 24v.</div><div class="">I have used many of the EG4 LL batteries, which at this point is one of the larger brands. </div><div class="">I greatly prefer and only recommend batteries that have an active display that shows %, volts, amps, cell voltages, temperature. </div><div class="">And I prefer ones that have a built in breaker. </div><div class="">I don’t like ones with bluetooth as I’ve seen that fail when there is an issue and then you can’t see what’s going on as the bluetooth is down too.</div><div class=""><br class=""></div><div class="">you’ll be really impressed once you get the hang of how differently they work. </div><div class=""><br class=""></div><div class="">And as to size, to me its all based around days of autonomy. Is 65% enough and to what DOD are you doing that?</div><div class="">I usually only recommend running them down to 20%, sure you can go to 10% but anything less than that you’re in the zone of how accurate the % meter in the battery is.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">I’m sure you’ll get a whole lot of advice,</div><div class=""><br class=""></div><div class="">good luck</div><div class=""><br class=""></div><div class="">jay</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Sep 17, 2024, at 9:19 AM, David Palumbo via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" class="">re-wrenches@lists.re-wrenches.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta charset="UTF-8" class=""><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">Wrenches,</div><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;"><br class=""></div><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">I have a nice little rental house here in my off-grid neighborhood that after 40 years is ready to transition to LiFePO4 batteries. </div><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">I have no experience with any lithium home power storage batteries. I'm looking for advice, so I can avoid mistakes as a rental house with battery problems is quite the pain in the ass. The last tenant was my daughter so life with older lead acids wasn't a huge issue, but now I want something I won't have to enter the house to monitor and operate. I'll bullet what I think I know and my questions.</div><ul data-editing-info="{"applyListStyleFromLevel":true}" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; list-style-type: disc;" class=""><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">The house has four 11-year-old Trojan Industrial IND 17-6 for 925 AH @ 24V that are amply sized for the houses loads.</div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">It has a newer TriMetric meter that I was supposed to be able to set up for web access using their WIFI module, but I have had no success with being able to monitor battery state of charge remotely.</div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">I really need something that will give me battery state of charge information without entering the house.</div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">The system has a single OutBack VFX3624. PV array is 2.5kW. </div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">System also has a Iota 40A charger so charging with my 6 KW genset is typically in the 100Amp range with the OutBack and Iota.</div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">We are in northern Vermont, so we rack up significant generator (NOT auto-start) run time in the winter months. </div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof"> I'm looking at Eclipse LiFePO4 24V 200AH. Three of these will give me 600AH @ 24V which is 65% of the rated Amp Hrs of the Trojan Industrials now in use. Is this enough?</div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">My battery box can easily handle up to four of the Eclipse 24V 200AH batteries. I see that Backwoods recommends that only three of the Eclipse are connected with battery cables. If I opted for four (for 800AH) I would need to use a busbar.</div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">Are there other distributors of Eclipse batteries other than Backwoods Solar that I should consider? I haven't used my dealer account with them for a number of years and I'm not sure that I'll get a good price from them.</div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">What is the lead time for getting these batteries shipped out?</div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">Are there other LiFePO4 batteries I should consider?</div></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;" class=""><div class="elementToProof">Is 600AH of LiFePO4's enough to replace 925AH of LA's?</div></li></ul><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">Dave Palumbo</div><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">Retired from running Independent Power, but active in off-grid solar.</div><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">Hyde Park, VT</div><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">802-371-8678 voice or text.</div><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; 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