The tutorial lecture entitled “Electrochemical Operando Analyses” will present a series of illustrative examples highlighting advanced operando electrochemical techniques, including eQCM, electrochemical dilatometry (e-Dilato), and operando in-plane resistance measurements. These methods will be shown as powerful tools for gaining deeper insight into charge storage and charge transfer mechanisms. Case studies will cover a range of representative materials, from activated carbon to battery electrode materials, including cathodes and anodes such as NVPF, TiS₂, and MXenes.