The fabrication of ASSBs starts with a cold pressing of 150 mg of the Li3YBrxCl6-x solid electrolytes under the pressure of 392 MPa. Sequentially, 16 mg of halide-carbon mixture was placed and pressed under the pressure of 490 MPa on the one side and the reference electrodes were then pressed on the other side (prelithiated LTO and In-Li alloy under the pressure of 490 MPa and 50 MPa, respectively).