best parallel configuration for 4 SOK 206ah?

[Jaya]

Can I go with the standard parallel configuration (pos to pos, neg to neg) or do I need to do a more balanced load configuration?

I keep seeing people oscillate between how the connect/disconnect terminals. My understanding has always been disconnect negative, then positive, reconnect positive then negative.

 

[sunshine_eggo]

Consult Victron's Wiring Unlimited book. They show you 4X different ways to parallel batteries.

And so much more.

Rules for disconnect are by application, not universal. For a typical power system, (-) is connected first and disconnected last as it's typically grounded.

 

[Jaya]

I have very limited internet, as I live remotely off-grid. For some reason, this forum isn't heavy on the bandwidth. Videos or pdfs/long documents are difficult.

 

[sunshine_eggo]

Wiring Unlimited

Wiring Unlimited is a great resource that covers many many common topics and questions relevant to DIYers. It is a free E-book from Victron Written by Margreet Leeftink. Check it out! Download

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https://www.victronenergy.com/upload/documents/Wiring-Unlimited-EN.pdf

(You need this. Get it).

 

[Jaya]

Sure. Based on the diagram, I was asking if the standard (diagonally) was good enough for the SOK 206ah due to their BMS or if something like the halfway would be better.

 

[sunshine_eggo]

Diagonally is the least balanced. Center batteries tend to be about 10-20% below the outers.

SOK/BMS/whatever doesn't have any bearing. Pick what works best for you and your application. If you never intend to use the batteries near their rated currents, then it doesn't matter.