From: David Palumbo via RE-wrenches &lt;re-wrenches@lists.re-wrenches.org&gt;
To: Wrench List &lt;re-wrenches@lists.re-wrenches.org&gt;
CC: David Palumbo &lt;palumbo131m@gmail.com&gt;
Subject: [RE-wrenches] Switching to LiFePO4
Thread-Topic: [RE-wrenches] Switching to LiFePO4
Thread-Index: AQHbCQVLrInzDpETa0yZBTOMCYb8IA==
Sender: RE-wrenches &lt;re-wrenches-bounces@lists.re-wrenches.org&gt;
Date: Tue, 17 Sep 2024 15:19:18 +0000
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Wrenches,

I have a nice little rental house here in my off-grid neighborhood that aft=
er 40 years is ready to transition to LiFePO4 batteries.
I have no experience with any lithium home power storage batteries. I&#x27;m loo=
king for advice, so I can avoid mistakes as a rental house with battery pro=
blems is quite the pain in the ass. The last tenant was my daughter so life=
 with older lead acids wasn&#x27;t a huge issue, but now I want something I won&#x27;=
t have to enter the house to monitor and operate. I&#x27;ll bullet what I think =
I know and my questions.

  *
The house has four 11-year-old Trojan Industrial IND 17-6 for 925 AH @ 24V =
that are amply sized for the houses loads.
  *
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 a=
ble to monitor battery state of charge remotely.
  *
I really need something that will give me battery state of charge informati=
on without entering the house.
  *
The system has a single OutBack VFX3624. PV array is 2.5kW.
  *
System also has a Iota 40A charger so charging with my 6 KW genset is typic=
ally in the 100Amp range with the OutBack and Iota.
  *
We are in northern Vermont, so we rack up significant generator (NOT auto-s=
tart) run time in the winter months.
  *
 I&#x27;m looking at Eclipse LiFePO4 24V 200AH. Three of these will give me 600A=
H @ 24V which is 65% of the rated Amp Hrs of the Trojan Industrials now in =
use. Is this enough?
  *
My battery box can easily handle up to four of the Eclipse 24V 200AH batter=
ies. I see that Backwoods recommends that only three of the Eclipse are con=
nected with battery cables. If I opted for four (for 800AH) I would need to=
 use a busbar.
  *
Are there other distributors of Eclipse batteries other than Backwoods Sola=
r that I should consider? I haven&#x27;t used my dealer account with them for a =
number of years and I&#x27;m not sure that I&#x27;ll get a good price from them.
  *
What is the lead time for getting these batteries shipped out?
  *
Are there other LiFePO4 batteries I should consider?
  *
Is 600AH of LiFePO4&#x27;s enough to replace 925AH of LA&#x27;s?

Dave Palumbo
Retired from running Independent Power, but active in off-grid solar.
Hyde Park, VT
802-371-8678 voice or text.

--_000_BYAPR17MB30326ADE191F8524F4A47644A6612BYAPR17MB3032namp_
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&lt;html&gt;
&lt;head&gt;
&lt;meta http-equiv=3D&quot;Content-Type&quot; content=3D&quot;text/html; charset=3Diso-8859-=
1&quot;&gt;
&lt;style type=3D&quot;text/css&quot; style=3D&quot;display:none;&quot;&gt; P {margin-top:0;margin-bo=
ttom:0;} &lt;/style&gt;
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nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
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Wrenches,&lt;/div&gt;
&lt;div class=3D&quot;elementToProof&quot; style=3D&quot;font-family: Aptos, Aptos_EmbeddedFo=
nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
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&lt;div class=3D&quot;elementToProof&quot; style=3D&quot;font-family: Aptos, Aptos_EmbeddedFo=
nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);&quot;&gt;
I have a nice little rental house here in my off-grid neighborhood that aft=
er 40 years is ready to transition to LiFePO4 batteries.&amp;nbsp;&lt;/div&gt;
&lt;div class=3D&quot;elementToProof&quot; style=3D&quot;font-family: Aptos, Aptos_EmbeddedFo=
nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);&quot;&gt;
I have no experience with any lithium home power storage batteries. I&#x27;m loo=
king for advice, so I can avoid mistakes as a rental house with battery pro=
blems is quite the pain in the ass. The last tenant was my daughter so life=
 with older lead acids wasn&#x27;t a
 huge issue, but now I want something I won&#x27;t have to enter the house to mo=
nitor and operate. I&#x27;ll bullet what I think I know and my questions.&lt;/div&gt;
&lt;ul data-editing-info=3D&quot;{&amp;quot;applyListStyleFromLevel&amp;quot;:true}&quot; style=
=3D&quot;list-style-type: disc;&quot;&gt;
&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, C=
alibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;The house has four 11-year-old Trojan Industr=
ial IND 17-6 for 925 AH @ 24V that are amply sized for the houses loads.&lt;/d=
iv&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;It has a newer TriMetric meter that I was sup=
posed to be able to set up for web access using their WIFI module, but I ha=
ve had no success with being able to monitor battery state of charge remote=
ly.&lt;/div&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;I really need something that will give me bat=
tery state of charge information without entering the house.&lt;/div&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;The system has a single OutBack VFX3624. PV a=
rray is 2.5kW.&amp;nbsp;&lt;/div&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;System also has a Iota 40A charger so chargin=
g with my 6 KW genset is typically in the 100Amp range with the OutBack and=
 Iota.&lt;/div&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;We are in northern Vermont, so we rack up sig=
nificant generator (NOT auto-start) run time in the winter months.&amp;nbsp;&lt;/d=
iv&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;&amp;nbsp;I&#x27;m looking at Eclipse LiFePO4 24V 200A=
H. Three of these will give me 600AH @ 24V which is 65% of the rated Amp Hr=
s of the Trojan Industrials now in use. Is this enough?&lt;/div&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;My battery box can easily handle up to four o=
f the Eclipse 24V 200AH batteries. I see that Backwoods recommends that onl=
y three of the Eclipse are connected with battery cables. If I opted for fo=
ur (for 800AH) I would need to use
 a busbar.&lt;/div&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;Are there other distributors of Eclipse batte=
ries other than Backwoods Solar that I should consider? I haven&#x27;t used my d=
ealer account with them for a number of years and I&#x27;m not sure that I&#x27;ll ge=
t a good price from them.&lt;/div&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;What is the lead time for getting these batte=
ries shipped out?&lt;/div&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;Are there other LiFePO4 batteries I should co=
nsider?&lt;/div&gt;
&lt;/li&gt;&lt;li style=3D&quot;font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontServi=
ce, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);&quot;&gt;
&lt;div class=3D&quot;elementToProof&quot;&gt;Is 600AH of LiFePO4&#x27;s enough to replace 925AH=
 of LA&#x27;s?&lt;/div&gt;
&lt;/li&gt;&lt;/ul&gt;
&lt;div class=3D&quot;elementToProof&quot; style=3D&quot;font-family: Aptos, Aptos_EmbeddedFo=
nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);&quot;&gt;
Dave Palumbo&lt;/div&gt;
&lt;div class=3D&quot;elementToProof&quot; style=3D&quot;font-family: Aptos, Aptos_EmbeddedFo=
nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);&quot;&gt;
Retired from running Independent Power, but active in off-grid solar.&lt;/div&gt;
&lt;div class=3D&quot;elementToProof&quot; style=3D&quot;font-family: Aptos, Aptos_EmbeddedFo=
nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);&quot;&gt;
Hyde Park, VT&lt;/div&gt;
&lt;div class=3D&quot;elementToProof&quot; style=3D&quot;font-family: Aptos, Aptos_EmbeddedFo=
nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);&quot;&gt;
802-371-8678 voice or text.&lt;/div&gt;
&lt;/body&gt;
&lt;/html&gt;

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