| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery with a circuit board disposed along a battery cell and integrally fixed to the battery cell with a mold, having the improved filling efficiency of a resin in the mold, and allowing prevention of an appearance defect. SOLUTION: This battery A has a battery cell 1, and a circuit board 5 disposed along one face 4 of the battery cell 1, while the circuit board 5 is integrally fixed to the battery cell 1 with the mold 2. The circuit board 5 is formed such that at least border lines 20A each showing a border line in the width direction of a border line 20 when projecting the circuit board 5 upon the face 4 are positioned inside a border lien 21 of the face 4, and the circuit board 5 is embedded in the mold 2.
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