Patent ID: 8790807
Filing Date: 2014-07-29
Classification: H01M,Y02E

Abstract:
1. A battery having a battery cell and an output terminal to output power from the battery cell, the battery comprising: a first surface; a second surface approximately perpendicular to the first surface; a first step surface provided at a first side of the second surface in a crosswire direction, the first step surface approximately parallel to the second surface and including a predetermined step; a second step surface provided at a second side of the second surface in the crosswise direction, the second step surface approximately parallel to the second surface and including a predetermined step; a first engaging portion protruding from the first side of the second surface with predetermined width and thickness in the crosswise direction; a second engaging portion protruding from the second side of the second surface with predetermined width and thickness in the crosswise direction; and a step provided in at least one of the first and second step surfaces, wherein the first step surface extends between opposing first and second ends of the first step surface in a lengthwise direction, the second step surface extends between opposing first and second ends of the second step surface in the lengthwise direction, and the first ends of the first and second step surfaces are at respective corners between the first and second step surfaces and the first surface.