AB(5)-type intermetallic compounds were prepared by induction melting. Electrodes were fabricated from metal powders by addition of a polymer binder and pressing at ambient temperature. Subsequently the electrodes were activated by amperodynamic cycling. Specific electrochemical experiments including rest potential measurements and potential controlled charge/discharge cycles were carried out to determine the thermodynamic and kinetic properties. The commonly used method for the determination of pressure-concentration isotherms was replaced by an electrochemical method. Potential measurements were carried out under equilibrium conditions at different states of charge enabling the calculation of pressure-composition isotherms from these data.