A Vanadium redox flow battery can be restored by mixing the electrolyte and adding a chemically equivalent reducing agent. This rebalances the electrolyte’s volume, concentration, and valence, consequently restoring the pristine productivity of the battery. The positive and negative electrodes can also be swapped to reduce efficiency loss due to electrode degradation. In general, restoring a Vanadium redox flow battery can help counter the inevitable capacity loss caused by extended cycling.