Solid-state lithium-ion cells have been prepared using thin film Li4Ti5O12 as the anode, thin film LiCoO2 as the cathode and Li0.33La0.56TiO3 as the electrolyte, The electrolyte was prepared as a relatively thick ceramic with a thickness close to 1 mm. This type of cell develops a voltage of slightly greater than 2 V and is stable to cycling. Perhaps the most interesting aspect of this cell, is that even with a relatively thick, poor quality ceramic electrolyte, this cell has been able to develop current densities as great as 40 mu A/cm(2).