I'm looking into building my own li-ion battery pack. I read about linking the cells in parallel and in series, and how to add a BMS. I would like to build a 12V pack with a very large capacity (mAh). So I need to build a 3S pack and then link the 3-series connected cells in parallel.
What I don't understand is: does the BMS need to know about the number of parallel connected cells, or can I simply keep adding them up?
For example, one BMS I was looking at had this illustration:
It shows 2 parallel connected packs, but can I also make it 3P, or 10P, or 150P?