First commercialised in the 90’s in consumer electronics, the Lithium-Ion battery is a type of battery technology which utilises lithium as the core charge carrier for the battery. Lithium-ions are hosted in both the Cathode and Anode, depending upon if the battery is charged (Anode) or discharged (Cathode). Discharging a battery means that the lithium-ions move from the Anode, through a liquid medium known as the Electrolyte, across a Separator, which keeps the Anode and Cathode separated, across to the Cathode. During this process, the electrons (which cannot travel across the cell) are directed across the circuit.