Fast ion conducting glasses (FICGs) have long been considered as alternatives to flammable organic liquid electrolytes in Li batteries (LBs). However, to date, there has never been before the unique combination of the required electrochemical properties for use as a solid electrolyte (SE) in LBs with the equally important requirements of viscoelastic behavior to form them into thin films suitable for low resistance separators. Submicron thick RF sputtered films of the poorly conducting LiPON are well known for use in microbatteries. However, there is no report so far of 10s of micron thick "bulk" thin films that are suitable for use in high rate, long cycle life bulk LBs. In this first ever report of thick film FICGs, we will summarize our recent efforts to produce thick films of Li FICGs. We will show, through compositional optimization, that new Lithium based FICGs can achieve chemical and electrochemical stability, high Li ion conductivity, resistance to Li dendrite penetration, a wide > 4 V electrochemical stability window and at the same time the strong glass forming character, resistance to crystallization and stable viscoelastic behavior in the supercooled liquid state necessary so that they can be processed into long ribbons. In this talk we will summarize our efforts to make and characterize such ribbons and use and test them in symmetric and asymmetric cells.