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The BMS is the only thing we really have no idea what to do with. I found this PDF from Orion which seems very helpful:

https://www.orionbms.com/manuals/pdf/tesla_modules.pdf

But I'm not sure I understand what it is I'm supposed to get. So let me lay it all out:

* Each battery contains 6 cells in series (which for the sake of easy terminology, I'll refer to as a "set").

* According to the PDF, the BMS is only concerned with the number of sets.

* The battery I want to get has 444 cells, suggesting there are 74 sets.

* According to Orion, the BMS2 can be [directly] configured up to 180 sets.

* We intend to use 4x batteries, which would be 296 sets.

So here are my questions:

1. Unless there's something I'm not understanding, are we expected to get more than one BMS to accommodate all batteries? Or even 1 BMS per battery? Seems like that'd get very expensive very fast.

2. Do we even need a BMS, considering we're not doing anything too extreme?

3. Is there a better option other than Orion?

Much thanks in advance.