Power storage apparatus, connection apparatus, power storage system, electronic device, motor-driven vehicle, and electric power system

A power storage apparatus having a battery unit housed in a case includes external terminals of positive and negative poles for providing, from outside the case, electrical connection to corresponding positive and negative poles of the battery unit; and electronic parts, wherein only when a connection with the battery unit is cut from at least one of the external terminals of both the poles, the electronic parts can be accessed.