For galvanostatic cycling, pins without the reduced diameter tip were used, resulting in a 7.5 mm circular steel pin as the current collector on both electrodes of the pellet. The cell was also assembled directly in the hot-press setup. The chosen electrolyte was first filled in and compacted by hand. Afterwards the anode composite was hand-compacted on one side of the electrolyte and the cathode composite on the other side. For the La2Co0.75Ni0.25O4-La0.9Ba0.1F2.9-C/La0.9Ba0.1F2.9/Pb-PbF2-C cell (referred as La2Co0.75Ni0.25O4/ La0.9Ba0.1F2.9/Pb-PbF2), 5 mg, 200 mg and 20 mg were used respectively, while the masses were 5 mg, 200 mg and 10 mg for the BiF3-BaSnF4-CNF/BaSnF4/Sn-BaSnF4-CNF cell (referred as BiF3/BaSnF4/Sn). Both cells were compacted at 450 MPa for 90 s before cycling at the chosen pressures.