BATTERY PACK

Fuse links are effectively not allowed to be broken by vibration or an impact. Further, when an overcurrent flows through the fuse links, the fuse links rapidly and surely melt, and thus protect batteries.A battery pack includes a plurality of batteries (1) that are chargeable and dischargeable, a battery holder (2) that arranges the batteries (1) at predetermined positions, and a bus bar (3) that is a metal sheet fixed to electrode terminals (1x, 1y) of the batteries (1). The bus bar (3) includes: a plurality of fixed terminals (3A) connected with the electrode terminals (1x, 1y) of the batteries (1); a base (3B) that connects the plurality of batteries (1) with each other through the plurality of fixed terminals (3A) in series and/or in parallel; and fuse links (3C) that include ends connected with the fixed terminals (3A), respectively, and roots that are connected with the base (3B). The battery pack further includes a heat insulating member (8) that tightly covers surfaces of the fuse links (3C), and surfaces of the fixed terminals (3A) connected with the fuse links (3C), respectively.