Lithium-ion batteries are essential for the energy transition as they can be used both in the automotive field and as a stationary storage solution. They are the first choice in these sectors as they feature high energy densities, low self-discharge property, nearly zero-memory effect and long lifespan. The purpose of the thesis is to develop a procedure for the characterization of lithium-ion batteries using the GT-AutoLion tool included in the worldwide spread CAE simulation software GT SUITE. CAE simulation is a time- and cost-effective means that can support the design and testing of Li-ion cells. This methodology was defined and validated based on experimental data from coin cells assembled and tested in laboratory.