Characteristics of a 12 V soluble-lead redox flow battery (SLRFB) stack developed by employing reticulated vitreous carbon foam embedded into graphite plate  as negative flow fields and inter-digitated graphite plates as positive flow fields. The stack consists of 8 cells in series assembled with 7 bipolar plates, two monopolar plates and 8 spacers placed between each cell. The flow battery exhibits compelling Faradaic and voltage efficiencies at low current densities between 10 – 20 mAcm^-2, and at charging-periods of 15-30 min. SLRFB exhibits an energy storage capacity of 50 – 60Wh and is able to deliver 100 W of constant power.  Long periods of constant – current  charging and higher current charging lead to a decrease in overall efficiency of the flow cell. The faradaic efficiency of SLRFB is 85% when it is charged for 15 min at 1A and is 65% when the charged for 3h. The faradaic efficiency decreases to 60% when the SLRFB is charged at 5A for 15 min. Long periods of constant current charge and discharge cycling lead to the accumulation of active materials specifically Pb and shedding of PbO₂. A novel design to mitigate the aforesaid issues is highlighted and cycle – life data are presented.