Re: [RE-wrenches] Fortress LFP batteries and Outback charge controller

[Jay via RE-wrenches]

The evault doesn’t see the multiple inputs, just like any battery. The envy % reading via web is working well. And yes it’s a bit weird to the solar from the inverter not add up to the daily charge numbers But it’s working fine If you follow oem charge instructions the open loop voltages are a bit lower than closed loop. So far in this offgrid system it’s not mattered with the 2 different charge settings. It’s still getting full. When the array gets upgraded I’ll put everything through the envy. But it’s got a bunch of 20 yr old panels that I didn’t want to rewire to 500v. So I kept the oldest ones on the 150v controllers Hope this helpsJayOn Jun 30, 2024, at 9:30 AM, Kirk Herander via RE-wrenches  wrote:Yes, remotely at least. You need a mate 3S to monitor any outback product if you want to see it on opticsRE. But the Evault state of charge should give an accurate calculation, regardless of where the charging Current is coming from. Kirk Herander / kirkh@vermont.solarOwner|Principal, VT Solar, LLCCelebrating our 33st Anniversary 1991-2024!!dba Vermont Solar Engineering802.559.1225On Sun, Jun 30, 2024 at 11:11 AM Dave Angelini Offgrid Solar via RE-wrenches  wrote:
 You and the client lose the ability to monitor it all in one place do you not?
 
Dave Angelini Offgrid Solar
"we go where powerlines don't"
  https://offgridsolar1.com/ 
e-mail  offgridso...@sti.net
text 209 813 0060


On 2024-06-29 4:48 pm, Kirk Herander via RE-wrenches wrote:



All,
 
I'm wondering if there are any precautions if charging a Fortress Evault LFP bank using 1 or more OB charge controllers, in tandem with an Envy inverter PV input.
 
I know it will have to be programmed differently, and it will be open loop, no CC control from the BMU,.
 
This is a net metered system using a Fortress 12 kw inverter. The total PV input of the inverter is 21 kw. Max sell back is 12 kw, while charging batteries at 6 kw.
 
My issue is the customer has his heart set on maxing out the roof capacity at 25 kw. And I don't really need to add a second inverter for critical loads, Only to increase integrated DC-coupled PV capacity.
 
So I feasibly put part of the array on external charge controller(s) , open-looped, and the remainder on a single 12kw Envy inverter.
 
A second inverter also increases the AC capacity, and as a result, involves a more comprehensive review for net metering approval in Vermont (new trigger for additional review is greater than 15 kw AC)..
 
 
-- 


Kirk Herander / kirkh@vermont.solar
Owner|Principal, VT Solar, LLC
Celebrating our 33st Anniversary 1991-2024!!
dba Vermont Solar Engineering
802.559.1225





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Re: [RE-wrenches] Fortress LFP batteries and Outback charge controller

[Kirk Herander via RE-wrenches]

It would be sweet if the Fortress Envy had auxiliary shunts like the Radian
for measuring multiple power sources, but alas it does not.

I have systems with as many as -4- online platforms, due to multiple
inverter brand upgrades and AC-coupling.through the years. And when I need
to see critical power curves / use patterns and other in-the-weeds stuff, I
also add an egauge. Sounds crazy, but it's the only way sometimes to
completely monitor and cross-check larger systems

On Sun, Jun 30, 2024 at 11:11 AM Dave Angelini Offgrid Solar via
RE-wrenches  wrote:

>  You and the client lose the ability to monitor it all in one place do you
> not?
>
>
>
> *Dave Angelini Offgrid Solar
> "we go where powerlines don't"
>https://offgridsolar1.com/ 
>   
> e-mail  offgridso...@sti.net 
> text 209 813 0060*
>
>
> On 2024-06-29 4:48 pm, Kirk Herander via RE-wrenches wrote:
>
>
> All,
>
> I'm wondering if there are any precautions if charging a Fortress Evault
> LFP bank using 1 or more OB charge controllers, in tandem with an Envy
> inverter PV input.
>
> I know it will have to be programmed differently, and it will be open
> loop, no CC control from the BMU,.
>
> This is a net metered system using a Fortress 12 kw inverter. The total PV
> input of the inverter is 21 kw. Max sell back is 12 kw, while charging
> batteries at 6 kw.
>
> My issue is the customer has his heart set on maxing out the roof capacity
> at 25 kw. And I don't really need to add a second inverter for
> critical loads, Only to increase integrated DC-coupled PV capacity.
>
> So I feasibly put part of the array on external charge controller(s) ,
> open-looped, and the remainder on a single 12kw Envy inverter.
>
> A second inverter also increases the AC capacity, and as a result,
> involves a more comprehensive review for net metering approval in Vermont
> (new trigger for additional review is greater than 15 kw AC)..
>
>
> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 33st Anniversary 1991-2024!!*
>
> dba Vermont Solar Engineering
>
> 802.559.1225
>
> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
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> List Address: RE-wrenches@lists.re-wrenches.org
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-- 

*Kirk Herander / **kirkh@vermont.solar *

*Owner|Principal, VT Solar, LLC*

*Celebrating our 33st Anniversary 1991-2024!!*

dba Vermont Solar Engineering

802.559.1225
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Re: [RE-wrenches] Fortress LFP batteries and Outback charge controller

[Kirk Herander via RE-wrenches]

Yes, remotely at least. You need a mate 3S to monitor any outback product
if you want to see it on opticsRE.

But the Evault state of charge should give an accurate calculation,
regardless of where the charging Current is coming from.

*Kirk Herander / **kirkh@vermont.solar *

*Owner|Principal, VT Solar, LLC*

*Celebrating our 33st Anniversary 1991-2024!!*

dba Vermont Solar Engineering

802.559.1225


On Sun, Jun 30, 2024 at 11:11 AM Dave Angelini Offgrid Solar via
RE-wrenches  wrote:

>  You and the client lose the ability to monitor it all in one place do you
> not?
>
>
>
> *Dave Angelini Offgrid Solar
> "we go where powerlines don't"
>https://offgridsolar1.com/ 
>   
> e-mail  offgridso...@sti.net 
> text 209 813 0060*
>
>
> On 2024-06-29 4:48 pm, Kirk Herander via RE-wrenches wrote:
>
>
> All,
>
> I'm wondering if there are any precautions if charging a Fortress Evault
> LFP bank using 1 or more OB charge controllers, in tandem with an Envy
> inverter PV input.
>
> I know it will have to be programmed differently, and it will be open
> loop, no CC control from the BMU,.
>
> This is a net metered system using a Fortress 12 kw inverter. The total PV
> input of the inverter is 21 kw. Max sell back is 12 kw, while charging
> batteries at 6 kw.
>
> My issue is the customer has his heart set on maxing out the roof capacity
> at 25 kw. And I don't really need to add a second inverter for
> critical loads, Only to increase integrated DC-coupled PV capacity.
>
> So I feasibly put part of the array on external charge controller(s) ,
> open-looped, and the remainder on a single 12kw Envy inverter.
>
> A second inverter also increases the AC capacity, and as a result,
> involves a more comprehensive review for net metering approval in Vermont
> (new trigger for additional review is greater than 15 kw AC)..
>
>
> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 33st Anniversary 1991-2024!!*
>
> dba Vermont Solar Engineering
>
> 802.559.1225
>
> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
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> There are two list archives for searching. When one doesn't work, try the
> other:
> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
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> ___
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Re: [RE-wrenches] Fortress LFP batteries and Outback charge controller

[Dave Angelini Offgrid Solar via RE-wrenches]

 You and the client lose the ability to monitor it all in one place do 
you not?


Dave Angelini Offgrid Solar
"we go where powerlines don't"
   [1]https://offgridsolar1.com/ [2]  [1]
e-mail  offgridso...@sti.net
text 209 813 0060

On 2024-06-29 4:48 pm, Kirk Herander via RE-wrenches wrote:


All,

I'm wondering if there are any precautions if charging a Fortress 
Evault LFP bank using 1 or more OB charge controllers, in tandem with 
an Envy inverter PV input.


I know it will have to be programmed differently, and it will be open 
loop, no CC control from the BMU,.


This is a net metered system using a Fortress 12 kw inverter. The total 
PV input of the inverter is 21 kw. Max sell back is 12 kw, while 
charging batteries at 6 kw.


My issue is the customer has his heart set on maxing out the roof 
capacity at 25 kw. And I don't really need to add a second inverter for 
critical loads, Only to increase integrated DC-coupled PV capacity.


So I feasibly put part of the array on external charge controller(s) , 
open-looped, and the remainder on a single 12kw Envy inverter.


A second inverter also increases the AC capacity, and as a result, 
involves a more comprehensive review for net metering approval in 
Vermont (new trigger for additional review is greater than 15 kw AC)..


--

Kirk Herander / kirkh@vermont.solar

Owner|Principal, VT Solar, LLC

_Celebrating our 33st Anniversary 1991-2024!!_

dba Vermont Solar Engineering

802.559.1225
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Re: [RE-wrenches] Fortress LFP batteries and Outback charge controller

[Jay via RE-wrenches]

No problem at all. I just did a system exactly like that.  Works fine. JayOn Jun 29, 2024, at 5:49 PM, Kirk Herander via RE-wrenches  wrote:All,I'm wondering if there are any precautions if charging a Fortress Evault LFP bank using 1 or more OB charge controllers, in tandem with an Envy inverter PV input.I know it will have to be programmed differently, and it will be open loop, no CC control from the BMU,.This is a net metered system using a Fortress 12 kw inverter. The total PV input of the inverter is 21 kw. Max sell back is 12 kw, while charging batteries at 6 kw.My issue is the customer has his heart set on maxing out the roof capacity at 25 kw. And I don't really need to add a second inverter for critical loads, Only to increase integrated DC-coupled PV capacity.So I feasibly put part of the array on external charge controller(s) , open-looped, and the remainder on a single 12kw Envy inverter.A second inverter also increases the AC capacity, and as a result, involves a more comprehensive review for net metering approval in Vermont (new trigger for additional review is greater than 15 kw AC)..-- Kirk Herander / kirkh@vermont.solarOwner|Principal, VT Solar, LLCCelebrating our 33st Anniversary 1991-2024!!dba Vermont Solar Engineering802.559.1225
___List sponsored by Redwood AlliancePay optional member dues here: http://re-wrenches.orgList Address: RE-wrenches@lists.re-wrenches.orgChange listserver email address & settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.orgThere are two list archives for searching. When one doesn't work, try the other:https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.orgList rules & etiquette:http://www.re-wrenches.org/etiquette.htmCheck out or update participant bios:http://www.members.re-wrenches.org___
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[RE-wrenches] Fortress LFP batteries and Outback charge controller

[Kirk Herander via RE-wrenches]

All,

I'm wondering if there are any precautions if charging a Fortress Evault
LFP bank using 1 or more OB charge controllers, in tandem with an Envy
inverter PV input.

I know it will have to be programmed differently, and it will be open loop,
no CC control from the BMU,.

This is a net metered system using a Fortress 12 kw inverter. The total PV
input of the inverter is 21 kw. Max sell back is 12 kw, while charging
batteries at 6 kw.

My issue is the customer has his heart set on maxing out the roof capacity
at 25 kw. And I don't really need to add a second inverter for
critical loads, Only to increase integrated DC-coupled PV capacity.

So I feasibly put part of the array on external charge controller(s) ,
open-looped, and the remainder on a single 12kw Envy inverter.

A second inverter also increases the AC capacity, and as a result, involves
a more comprehensive review for net metering approval in Vermont (new
trigger for additional review is greater than 15 kw AC)..


-- 

*Kirk Herander / **kirkh@vermont.solar *

*Owner|Principal, VT Solar, LLC*

*Celebrating our 33st Anniversary 1991-2024!!*

dba Vermont Solar Engineering

802.559.1225
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[RE-wrenches] Fortress LFP batteries

[Dave Angelini Offgrid Solar]

 Anyone have any comments on Fortress LFP batteries please? 

I already
know that they do not integrate directly with Outback and Schneider. One
must use a battery monitor. 

I believe that the Fortress battery does not
have a display for Soc, could be wrong. 

Thank-you!  

Dave Angelini
Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [1]
e-mail offgridso...@sti.net
[2]
text 209 813 0060
 

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