LEAD-ACID BATTERY

A lead-acid battery () is provided with a lid (). A communication chamber () is formed inside the lid (). In the communication chamber (), a first distance between an inner wall () and a vent hole () in a sidewall () is shorter than a second distance between the inner wall () and a communication hole (), and a tip (A) of the inner wall () on the other side in the first direction is formed at a position on the other side in the first direction than the vent hole ().