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Hi, I have a 24v bank comprised of 8x 6v batteries in two parallel strings of 4 batteries. Which string do I connect the midpoint lead to? Or do I need to interconnect the midpoints of both strings (midpoint parallel connection)?
Thanks in advance.
Duane
Hello Duane
Like you say, make a midpoint connection between the two parallel strings and use that as the midpoint connection for the BMV-712.
Hi Duane,
I have the exact same setup with my system (8x6v batteries configured as 2x 24v strings) and have mid point voltage monitoring.
But I also;
1- Have fuses at the mid point connections to the battery - that way you don't have to use super thick cable to accommodate a battery failure & potential high current through the mid point link cable.
2- Run the mid point link cables to a 4 position battery switch (1, 2, 1+2 & OFF) and then to the BMV-712 B2 terminal - that way you can disconnect he mid point link if/as desired and also check the mid point voltage error of each individual string.
