[RE-wrenches] Fortress

[Dave Tedeyan]

I also have been having some issues with reported SOC through the Guardian
with Fortress. Fortress is generally responsive, although no one has
specifically addressed my concern yet. What I have seen with two recent
eFlex installations (replacing an existing battery bank on an off-grid
system) is that the reported SOC in the Guardian app for some batteries is
way lower than it should be. For example, one system is at 92%, 92%, 92%,
62%. Yet the lights on the batteries all indicate that they are in the
75-100% range. The other system is reporting 23%, 63%, 62%, 25%, 48%, and
again, all the LED's on the batteries are in sync. This has led one
customer to keep disconnecting the batteries and trying to charge just one
of them up and then fiddling with it until they are all back within a good
voltage range, when I am nearly certain that they are all the same voltage
even though they are reporting different SOC on the Guardian app only.

I am looking forward to when they have the website up and I can look at
historical data to see whether this battery is actually doing more work. I
suspect it is not, but then maybe I can get Fortress to look more closely
at it. And for all these batteries, the cables are exactly the same length
and going to a bus bar.

Has anyone else noticed this discrepancy between the guardian app and (what
I think is) reality with the SOC?

Cheers,
Dave

On Thu, Feb 15, 2024 at 8:52 AM Jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi william
>
> Could you share the equipment used and what issues you had?
>
> Thx
> Jay
>
> On Feb 14, 2024, at 3:13 PM, William Miller via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> 
>
> Peter:
>
>
>
> I have only purchased one set of Fortress batteries.  There have been
> issues, I am sure many of them self-induced.  Fortress has been overall
> very responsive.  There have been a few days where I could not get through
> to technical support but with persistence I always manage.  Fortress has
> offered truck–roll compensation at a reasonable rate as well.
>
>
>
> William Miller
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
> Behalf Of *Peter Giroux via RE-wrenches
> *Sent:* Wednesday, February 14, 2024 6:47 AM
> *To:* 'RE-wrenches'
> *Cc:* pgiroux at mindspring.com
> *Subject:* [RE-wrenches] Fortress
>
>
>
> Good morning my fellow wrenchers. While I see the comments on SunPower and
> the challenges, are any of you having similar issues with Fortress? Their
> bms boards from the early classics have not held up and even after
> replacement there are still issues ( parallel batteries and stand alone not
> showing accurate #’s,  ). While support has been, well supportive, the
> issues persist. Any thoughts or fixes you have come up with?? I just had a
> customer unplug the coms cable from their sol-ark and bring their readings
> to volts VS %% and it is starting to work a bit better. Any and all help or
> ideas appreciated.
>
>
>
> Thx
> peter Giroux
>
> American Solar
>
> Norcross Ga
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-- 
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Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
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