electrical storage battery equipped with improved sealing means.

It comprises a) means for tightening against each other of the storage elements (4, 5, 6, 7, 8) at right frames (9i) of these elements and b) means (12, 13; 18, 19) to provide a concentration of compressive stresses due to the clamping elements between each frame and a metal foil (5) adjacent, on opposite growing surfaces on a closed contour substantially parallel to that of the metal sheet , the stresses being such that at any point of said surfaces there is crushing of one another to form a seal vis-a-vis the product contained in the storage cells.