BATTERY MODULE

In an embodiment, a battery module includes a battery group, an electric path, a case, an insulating layer and a conductive layer. The battery group includes a plurality of batteries, and a current passes through the electric path during each of charging and discharging the plurality of batteries. The battery group is accommodated in the case, and the case includes a metal body having electric conductive properties. The insulating layer is stacked on a surface of the metal body on a side where the battery group is located, and has electric insulating properties. The conductive layer is stacked on a surface of the insulating layer on a side where the battery group is located, and is electrically connected to any of the electric path and a portion having electric conductive properties in the battery group.