| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that when a new battery device is developed, the shape of a recess portion of the battery device is complicated because it is necessary to increase the number of steps of the recess portion of the battery device.SOLUTION: A battery 1 includes a battery housing 2, an output terminal 3, a first engaging portion 7a, a second engaging portion 8a, a first upper step face portion 6a, a second upper step face portion 6b, a first lower step face portion 9a, and a second lower step face portion 13a. The step amount in the height direction from the lower face portion 5a is larger in the first lower step face portion 9a than that in the first upper step face portion 6a. The step amount in the height direction from the lower face portion 5a is larger in the second lower step face portion 13a than that in the second upper step face portion 9a.SELECTED DRAWING: Figure 1 |
