Patent ID: 7648796

Claim:
A battery pack which is used in a status being mounted on electronic equipment, a battery being built in a case and an output terminal electrically connected to the battery, the output terminal being mounted in such a manner as to be directed towards the outside of said case, wherein said case comprises a main body with said battery built therein, and an output section having said output terminal, said main body comprises: a mount reference plane of the case for the electronic equipment; an opposing surface opposing the mount reference plane; a pair of first side surfaces respectively opposing each other and respectively substantially perpendicular to the mount reference plane and the opposing surface; and a pair of second side surfaces respectively opposing each other and respectively substantially perpendicular to the mount reference plane and the opposing surface, wherein said output section is formed in a projecting manner on a surface of one of said pair of second side surfaces of said main body, wherein a plurality of first engagements for engaging said electronic equipment is formed on one surface where said output section is not formed, of said pair of second side surfaces, and wherein a second engagement for engaging said electronic equipment is formed on one surface where said output section is formed, of said pair of second side surfaces.