On one side, lot of studies are focused on the search of a fast and safety charging law that avoids the appearance of secondary reactions. For electrochemical ESS such as lithium-ion batteries or VRFBs, a simple charging technique consists on use a constant current-constant voltage (CC-CV) profile [1]. However, this strategy can lead to gassing side reactions or battery deterioration if these values are not correctly regulated. For this reason, this strategy has been changed for one that is commonly used, which consists on first introducing a constant current profile until the SOC reaches an upper bound, followed by a constant voltage profile until maximum SOC is reached [9].