Transport properties of glasses in the system AgI:Ag2O:V2O5 and AgI:Ag2O: (V2O5+B2O3) have been investigated. It was found that, at high AgI concentrations, the addition of another glass former (B2O3) did not improve the conduction characteristics of the pure vanadate glasses, the best conducting composition of which had ambient temperature, ionic conductivity comparable to that of conventional liquid electrolytes. The highest conducting composition was used as an electrolyte in the study of silver solid state cells. The discharge characteristics of different cells fabricated with the glassy electrolyte, have been compared with those having the best conducting polycrystalline ompositions as electrolytes. © 1988 Elsevier Science Publishers B.V. (North-Holland Physics Publishing Division).