MOLTEN SALT BATTERY

Provided is a molten salt battery which can be stably charged and discharged. A separator 3 composed of a rectangular plate-shaped glass cloth and containing a molten salt is interposed between a positive electrode 1 and a negative electrode 2 having a rectangular plate shape to form a power generating element X. A battery container 5 is configured to be substantially rectangular parallelepiped-shaped. A non-flexible presser plate 4b pressed by a spring 4a arranged at a negative electrode 2 side in the battery container 5 substantially evenly disperses pressing force from the spring 4a and presses the negative electrode 2 downward. As a result of the reaction, a bottom wall 52 of the battery container presses the positive electrode 1 upward so that no dead space is generated even when a plurality of batteries are combined.