Battery manufacturing involves the collection of raw material, the development and setting of design specifications, and the assembly of an individual battery pack.
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When it comes to the collection of raw materials manufacturers have to collect very specific material to be used in the assembly of battery packs. This material includes the casing - for enclosing and hermetically sealing a battery body. The chemistry which is often times lithium based for its high electrochemical potential. An example could be a {Solution of Lithium hexaflourophosphate (LiPF6) - a mixture of Organic Solvents: [Ethylene Carbonate (EC) + DiEthyl Carbonate (DMC) + DiEthyl Carbonate (DEC) + Ethyl Acetate (EA)]}. The electrolyte - a conductive chemical called an electrolyte solution. The battery’s specialized hardware that includes: the connector, the fuse, the charge and discharge FETs, the cell pack, the sense resistor (RSENSE), the primary and secondary protection ICs, the fuel-gauge IC, the thermistor, the pc board, the EEPROM or firmware for the fuel-gauge IC.