Lead acid accumulator cover capable of preventing accumulator cell vertically leaking

The utility model relates to a lead-acid accumulator cover which can prevent accumulators leaking when hading, and the lead-acid accumulator cover belongs to the technical field of the accumulators. The lead-acid accumulator cover can solve the problem that the acid liquid leaks when the lead-acid accumulators are put vertically with the side of the long edge as the bottom. The lead-acid accumulator cover comprises a big cover and an exhaust cover, wherein, the butt-joint of the big cover and the exhaust cover is sealed in the heat-sealing way. Current limiting retaining walls A, C are arranged correspondingly in each unit cell of the improved big cover and the exhaust cover, and the ends of the current limiting retaining walls A, C respectively extend near two side walls of each unit cell along the width direction of the accumulator cover. In the utility model, two current limiting retaining walls are added on corresponding positions in each unit cell of the exhaust cover and the big cover of the accumulator