You call elcon and tell them what your battery pack is: how many of what cells. They do the math and sell you the (generally) correct profile. you get a batch of different settings higher and lower. Your bms fine tunes the charge unless you are a dinosaur like me and run bms-less. There are some fussy points but only if you know more about your situation than they do (rare). 80% of the time they are dead on, or within a settings different.
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