yabert
Solar Enthusiast
Yes, it's only for the small imbalance of capacity / impedance between groupe of cells. With a conductor between each group of three 60Ah cells (so 180Ah), a new 360Ah cells is create.Just to make sure that I understand you correctly - the orange lines you drew are for balancing the cells (if any imbalance occurs) and there won't really be any large currents passing by these cables?
3 BMS, why? If you decide to build one gigantic 1620Ah battery you only need one 12S BMS.Given the number of packs I have (27). Perhaps 12S 9P (1620Ah) would be more suitable? That would bring down the number of BMS's to 3.
Based on the 60Ah cells, that will give you a 12S 21P battery.