[RE-wrenches] Do Sunny Islands and Fortress batteries play well together?

[Chris Sparadeo]

https://learn.fortresspower.com/external/manual/sma/article/copy-of-unpacking-the-batteries?p=dc8b9a9c1b3f410556835193e66f2257c662403dfb3da4056e618e954e8381d2


According to Fortress, they have estables closed loop. However, I don’t
have experience with this match up.

On Fri, Sep 2, 2022 at 6:16 PM Mac Lewis via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi Howie,
>
> I haven't done a Fortress paired with a Sunny Island, but I have done a
> large  Blue Ion battery bank work a quad stack of Sunny Islands.  You can
> use the Namaka box to aggregate battery bank data and select "external
> Li-ion BMS" and it will convey state of charge to the Sunny Island.
>
> Seems to work well.
>
> We ran it without the Namaka box for a while, and the Sunny Island SOC
> algorithm really couldn't effectively track the state of charge of the Blue
> Ion batteries. I suspect, unless Fortress has a way to "talk" to the Sunny
> Islands, you would struggle with programming the Sunny Island to properly
> track the state of charge. This really comes up with off grid sites where
> you are counting on starting a generator at the proper time.
>
> Let us know what you decide to do.
>
> Thanks
>
>
>
>
>
> On Thu, Sep 1, 2022, 11:11 AM Howie Michaelson via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Has anyone put Fortress batteries into a Sunny Island off grid system,
>> either an E flex or an E vault? I have a client with older 2 volt Rolls
>> batteries that need replacing. Currently about 55 kwhs. Or any experience
>> with other LiFEPO4 batteries with Sunny Island off grid systems?
>> Thanks
>> Howie
>> Sin barber
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Chris Sparadeo


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