Various embodiments of redox flow battery stack assemblies may include a plurality of multiple-block strings, where each string may include a plurality of reaction blocks connected in electrical series and in fluidic parallel. Various embodiments provide configurations and systems for mitigating or substantially reducing shunt currents in common electrolyte conduits.
STATEMENT OF FEDERALLY FUNDED RESEARCH
 Inventions included in this patent application were made with Government support under DE-OE0000225 "Recovery Act--Flow Battery Solution for Smart Grid Renewable Energy Applications" awarded by the U.S. Department of Energy (DOE). The Government has certain rights in these inventions.