Source: https://www.researchgate.net/profile/Mohamed_Mourad_Lafifi/post/State-of-charge-estimation-of-lithium-ion-battery-MATLAB-simulink/attachment/5ab429654cde266d589336e0/AS%3A607104985489408%401521756516184/download/Battery+Management+System+BMS+for+Lithium+Ion+Batterie.pdf