There is a wide variety of models that rely on an accurate value of the permeability and volume of the CBD. These can be grouped into manufacturing models and performance models. For the former, the CBD porosity has an impact on its specific volume and interaction forces between particles. For the latter, it has an impact on its specific volume, ion transport, and electron transport properties. While some of our previously reported manufacturing models are able to account for changes in size of CBD porosity due to the external compression upon electrode calendering, there is no information in literature about the magnitude of this effect. For this reason, the method developed herein considers it independent of calendering parameters.