This paper outlines the parameterisation methodology for a 3D thermal-electrochemical model for a high-energy lithium-ion battery. The electrochemical and thermal relationships in a high energy density cylindrical cell (21700) and the electrodes have been mapped through electrochemical testing at different temperatures, to provide diffusivity, exchange current and electronic conductivity profiles. Additional thermal properties, specific heat capacity, thermal conductivity and the entropic terms are measured using thermal characterisation techniques.