Abstract: A plate for a multi-cell secondary battery incorporating a moulded perimeter frame (10) of thermoplastic material with a metal mesh (18) spanning the area of the frame (10) to provide support for battery paste material. The metal mesh (18) having at least a portion thereof formed into a plurality of corrugations (16) after the frame (10) has been moulded in-situ about the margin of the mesh (18). The forming of the corrugation (16) removing any buckling or distortion of the mesh (18) arising from the moulding of the frame (10).

Abstract: A method and apparatus for applying paste to battery grids wherein the paste is circulated in a primary circuit incorporating an open reservoir wherein the paste is relieved of all pumping pressure and portion of the paste is diverted from the primary circuit into a secondary circuit for delivery to a nozzle which may be selectively opened and closed to deliver paste to the grid, the secondary circuit also incorporates the open reservoir.

Abstract: A multi-cell battery constructed of a plurality of frames of insulating material each frame having a number of active battery material areas arranged side by side with a division portion between each material area, the frames being arranged side by side in a direction normal to the plane of the frame with the division portions secured in sealed relation to form partitions between adjacent cells of the battery. The active battery material in respective areas being selected so that adjacent areas in each frame are of opposite polarity and adjacent areas in adjoining frames are of opposite polarity. A barrier frame interposed between and secured to two frames in the assembly forming a chemical and electrical barrier between the active battery material in frames on opposite sides of the barrier member so that the assembly of frames forms two batteries of equal nominal voltage.

Abstract: A multi-cell battery is disclosed which comprises a stacked arrangement of frames having a number of side-by-side active paste support areas which form plates. Electrolyte-porous separator members are provided between adjacent plates in adjoining frames. The separator members are spaced from the positive active material by spacer elements which are connected to the frames and extend partly over and project from the faces of the separator members. The spacer elements are preferably inclined upwardly from their points of connection to the frames to define particle-trapping pockets.