I'm building a new pack, and would like to limit Cell Voltage to 4.05max to increase the lifespan of cells. I've been lurking at those "smart bms" out there, but they are quite expensive (would be half the price of the total pack!) and honestly, I'm not a fan of all the added functionalities. (more complexity = more bugs = more errors = more failures) The only thing I'm interested in, is a proper way to limit the max cell voltage.
Now when looking a classic cheap chinese bms ( like this one, how does the balancing work ? Is there an arbitrary threshold set upon which each P group looses or gains power, or does it simply divide the total voltage by the amount of cells (says 14s) to establish this value ? If so, is it possible to limit the voltage of each cell (or p group) by simply setting a lower charging tension (say 56.7 instead of 58.4)?
Now when looking a classic cheap chinese bms ( like this one, how does the balancing work ? Is there an arbitrary threshold set upon which each P group looses or gains power, or does it simply divide the total voltage by the amount of cells (says 14s) to establish this value ? If so, is it possible to limit the voltage of each cell (or p group) by simply setting a lower charging tension (say 56.7 instead of 58.4)?