Abstract: A leak resistant automotive battery comprising a housing containing cells having filling plugs; a battery cover sealed to an opened top end of the housing and having filling holes overlying the respective cells; at least one partition wall provided in the battery cover to divide the battery cover into at least two vent chambers, each vent chamber overlying a set of the cells, to prevent flow of electrolyte from one set of cells to an adjacent set of cells when the battery is tilted; a common vent line in the battery cover connecting the spaces above the cells in each set of cells, each of the common vent line being sealed at one end and connected at its other end through a vent chamber to one end of each of parallel vent lines having at its other end a vent cap assembly which permits escape of vented gases from the cells in each set.

Abstract: A leak retardant automotive battery includes a housing containing a plurality of cells that each have a filling plug and a battery cover closing the housing above the cells. The battery cover includes a central blockage that divides the housing into two compartments that each contain a set of cells. The cells in each compartment are connected by vent holes in the battery cover that are respectively connected to associated vent cap assemblies so as to separately vent each compartment through its associated vent cap assembly.

Abstract: A vented-type leak-resistant motor cycle battery comprising a housing in which a plurality of cells are mounted, a battery cover sealed to an upper end of the housing in a liquid tight manner so that the battery cover overlies the cells each having a vent chamber, a filling hole and a filling plug and a vent chamber cover sealed to the battery cover in a liquid tight manner, the battery cover being provided with a vent line extending in a longitudinal direction of the battery cover in flow communication with the spaces above the cells and having an exit end tilted upwardly toward the outside and a vent cap assembly being fitted to the vent line at the tilted exit end.