Some basic but important guidelines for the development of sheet-type all-solid-state batteries using a practical slurry coating process are described in this paper. Li3PS4 glass powder that had been passed through a 25 mu m sieve was prepared. Positive and negative electrode sheets with capacities of more than 1.5 mAh cm(-2) were developed. An all-solid-state full cell was constructed using the electrode sheets and the self-standing solid electrolyte sheets. The energy density of the cell was ca. 155 Wh kg(-1), where the weight of the current collectors and the exterior package was excluded from the weight for calculation. (C) 2017 The Electrochemical Society. All rights reserved.