Provided is a buffer body 5 for a lead-acid battery 1 having two terminals 12, the buffer body 5 being made of pulp mold, the buffer body 5 including, in a state where the buffer body 5 is disposed outside a first wall portion 22 facing the two terminals 12 among wall portions of a packing box 2 in which the lead-acid battery 1 is packed: a second wall portion 50 facing the first wall portion 22; and a first recessed portion 53A formed at a position facing the terminal 12 in the second wall portion 50 and recessed in a direction away from the first wall portion 22.