Making valid comparisons between two storage materials on a system basis requires knowledge of their properties, preferably from experimental measurements. Specifically, this requires the reversible gravimetric capacity (fH2), enthalpy (ΔH) and entropy (ΔS) of H2 desorption, density (r), thermal conductivity (k) of the pelletized material to design the storage system, and the kinetics of H2 desorption in the form of a global Arrhenius expression. We report here a consistent set (i.e., measurements made using the same sample) of experimental properties for the bulk and nanoscale versions of (LiNH2+2LiH)