CONNECTION MODULE

A connection module is configured to be accommodated inside a battery pack including an upper case and a lower case, the connection module including: a plurality of bus bars that electrically connect a device disposed on the upper case side inside the battery pack to a connector disposed on the lower case side inside the battery pack; a plurality of holders that hold the plurality of bus bars, each of the plurality of holders including bus bar holding portions; and a bracket capable of locking the plurality of holders, wherein, in a state in which the plurality of holders that hold the plurality of bus bars are locked to the bracket, the plurality of bus bars are arranged side by side in a left-right direction orthogonal to a vertical direction, a direction orthogonal to the vertical direction and intersecting the left-right direction is assumed to be a front-rear direction.