This document provides supplementary information for a research article on three-dimensional bicontinuous ultrafast charge and discharge bulk battery electrodes. It includes 6 tables and 8 figures that provide additional experimental details, results, and characterization data. Specifically, it reports electron conductivities and ion diffusion coefficients for various cathode materials, shows FCC structures of templates and relationships between porosity and template parameters, and includes discharge curves, cycling performance, and material characterization such as XRD and XPS for NiOOH and MnO2 electrodes fabricated in the study.