Lead acid accumulator cover capable of preventing inclined leakage of accumulator with long edge side surface as bottom

The utility model relates to a lead acid battery cover which can prevent storage battery leakage when the storage battery is inclined with the long edge as the bottom, belongs to the storage battery technology field, and is used for solving the problem of acid liquor leakage when the lead acid battery is in vertical state. The lead acid battery cover is composed of a big cover and a gas exhausting cover, and the butting surfaces of the big cover and the gas exhausting cover are heat sealed. After being improved, two flow limiting and retaining walls are arranged at the corresponding positions in the cells of the big cover and the gas exhausting cover, the end of the second flow limiting and retaining wall extends near the convex edge of the gas exhausting cover, and the end of the first flow limiting and retaining wall extends near the side wall of the long edge of the gas exhausting cover. The two flow limiting and retaining walls are additionally arranged in the lead acid battery cover, so that the liquid l