Patent ID: 7141330

Claim:
A secondary battery accommodation case comprising a substantially rectangular first case member having a main exterior surface, four side exterior surfaces, and a battery accommodation portion for accommodating secondary batteries, said secondary battery accommodation case further comprising a second case member to be assembled with said first case member for closing said battery accommodation portion, characterized in that, when said second case member is assembled with said first case member, a main exterior face of said second case member for closing said battery accommodation portion is made to become flush with or lower than upper edges of two or more of the side exterior surfaces out of the four side exterior surfaces of said first case member encircling said battery accommodation portion, and wherein an upper edge of a front face portion and an upper edge of a side face portion of the first case member are made continuous by way of a gentle slope portion, and an eaves portion is provided substantially where the two upper edges meet in order to prevent the second case member from disengaging the first case member once the two members are joined and further wherein the eaves portion engages a portion of the main exterior face of the second case member.