I have 200ah winston cells with 123Bms and the 123 dual relay. I have the “standard mode” and standard settings v-bypass=3,4v and v-max=3,6v. I thought that the v-bypass should be the start of the balancing and that charging
should stop when one cell reached v-max. This isn’t the case. The charge stop criteria is always (at least for my bank) when all cells is above v-bypass. In my mind this allows for very little balancing since the charging
normally stop at 3,4v. Any comments on this?
Is this a mistake in the design or have I just got it wrong?