A vanadium redox battery energy storage system capable of modularly incorporating additional electrolyte reservoirs to increase energy capacity while allowing for efficient low-volume operation is disclosed. The circuit includes a peripheral circuit redundancy control block and a memory bank redundancy control block. The cached static branch prediction can thus redirect the prefetching to the branch target address sooner than the static predictor 12. A system for the conversion of tapped high voltage electricity to medium voltage electricity is also disclosed.