The present disclosure relates to a battery module. The battery module includes a housing defined by one or more walls. A wall of the housing includes an opening configured to create a passageway between an interior of the housing and an exterior of the housing. The battery module includes a connector barrel disposed within the opening. The connector barrel is a hollow conduit with a first open end opposite a second open end, and the connector barrel is configured to receive a low voltage signal connector through the first open end and a vehicle control module connector through the second open end. An external surface of the connector barrel includes a pair of protrusions configured to enable intimate contact between the wall of the housing and the connector barrel.