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Hello, thanks for info and KIS. Providing additional information to assist in pointing me in the right direction on a BMS. 1. we are completly off grid, no grid access at all nor will there be. 2. not electricity savey, working at learning. want to learn/know, but most of all want to be safe...

Purchased 8 180ah CALB 3.270-3.273 batteries. Connecting batteries in 4 groups of 2 (series) then connecting those groups in parallel for a 12v battery for our RV. Will a S4 100ah BMS be a correct match with my battery pack described above or is another S? BMS be better?