Lithium-ion battery electrolytes are mixtures of volatile, flammable, and toxic compounds. When released, even at room temperature and especially in enclosed environments, electrolyte vapours can reach concentrations that are harmful to humans (Lebedeva, 20161; Lebedeva, 20192). Supported by experimental studies, computational fluid dynamics (CFD) is used to simulate the dispersion of a vapour cloud of Li-ion battery electrolyte organic solvents commonly used in commercial batteries. With this highly versatile method, a plethora of cases and dispersion conditions will be considered in this presentation, such as in open, enclosed and semi-enclosed environments, with the aim of gaining insights into the underlying processes to help design necessary safety and precautionary measures in case of accidental electrolyte release from Li-ion batteries.