ALL SOLID BATTERY, MANUFACTURING METHOD OF ALL SOLID BATTERY AND SOLID ELECTROLYTE POWDER

An all solid battery includes: an oxide-based solid electrolyte layer; a first electrode provided on a first main face of the solid electrolyte layer; a second electrode provided on a second main face of the solid electrolyte layer, wherein the solid electrolyte layer is a sintered structure of solid electrolyte powder, wherein the solid electrolyte powder has D10% diameter of 0.05 μm or more and 0.6 μm or less, D50% diameter of 0.08 μm or more and 1.5 μm or less, D90% diameter of 4 μm or less, and a BET value of 3 m/g or more and 20 m/g or less.