[RE-wrenches] EG4 v HomeGrid battery systems update?

[Christopher Warfel]

Thank you, this will be inside, so I won't need heated. Expandability 
would be nice as the loads are spread among three buildings.  Chris

On 9/2/2025 11:35 AM, Maverick Brown via RE-wrenches wrote:
> The HomeGrid Stack’d is a nice expandable system where each blade adds 
> to the capacity. Each blade has a BMS and they communicate to the 
> master BMS that is stacked at the top of the top battery. I have a few 
> sites that are Stack’d!
>
> They are not officially server rack batteries since they stack self 
> contained and don’t use inter battery cables either. Need more 
> capacity, just stack another battery (shutdown, stack, DIP SW, boot 
> up). That is their advantage. The disadvantage is that they are only 
> 15S instead of the more well adopted 16S LiFePO4. That just means they 
> are slightly less flexible if the need arises to parallel another 
> brand… not a show stopper.
>
> I’d recommend HomeGrid Stack’d. They also have heated versions, if needed.
>
> maxresdefault.jpeg
> Homegrid Stack'd Lithium Battery Deep Dive & Bootup with Maverick 
> MacGyver <https://www.youtube.com/watch?v=3Bms51adiYE&t=1062s>
> youtube.com <https://www.youtube.com/watch?v=3Bms51adiYE&t=1062s>
>
> <https://www.youtube.com/watch?v=3Bms51adiYE&t=1062s>
>
> I also have EG4 Server Rack and Wallmount Batteries deployed. No 
> issues there either. The Wallmount batteries are also a breeze to 
> install with the quick connectors. The outdoor version is heated.
>
> If you are just needing 15kWh, then one wall mount battery and you are 
> done.
>
> Also, as a curve ball, the Discover HELIOS is also 16kWh and self 
> heated and also has an available gutter / wire-way that fits the 
> Sol-Ark 15k and it might also fit the 12k? That would make for a sweet 
> setup.
>
>
>
>
> Maverick Brown
> Off-Grid Solar Commander since 2006
> *Maverick Solar Enterprises, Inc.*
> * • Solar Commander Remote Power*
> * • SunFlow Systems Cathodic Protection
> *maverick at mavericksolar.com
> 512-460-9825
>
>> On Sep 2, 2025, at 9:40 AM, Christopher Warfel via RE-wrenches 
>> <re-wrenches at lists.re-wrenches.org> wrote:
>>
>> Hi Wrenches, I went through the archives and read the comparison 
>> between these two.  The HomeGrid manual was in such a mess (or my pdf 
>> reader was defunct), that I started looking at other options. If 
>> anyone has a strong opinion of either of these two, or something 
>> better, I would appreciate.  We traditionally install small systems, 
>> and this would be one (@15kWh).  I would prefer to use a racking 
>> system with the BMS as part of the packaging. Solark 12kPV 
>> multimode.  Thank you, Chris
>>
>> -- 
>> Christopher Warfel, PE
>> ENTECH Engineering, Inc.
>> PO Box 871, Block Island, RI 02807
>> (401) 447-5773
>>
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-- 
Christopher Warfel, PE
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
(401) 447-5773
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