(Sorry for the poor illustration. From me, that’s as good as it gets.)
A small, but potentially significant, modification to parallel battery block cabling.
The use of terminal bus bars (TBB) permits electrically identical connections to each block, promoting true parallelism.
A ve+ and ve- TBB will have balanced distribution. (No need for + at top, - at bottom, wiring in an attempt to mitigate the inherent unbalance of “daisy chain” interconnects.)
In the illustration, an intermediate ve- TBB is used to balance an arbitrary number of parallel branches (try to keep at no more than 4) before connecting to the “battery side” of the monitor shunt. With only 2 battery blocks, their cables can be stacked onto the shunt’s battery terminal, eliminating the intermediate TBB.