A battery cell interconnect and voltage sensing assembly having a plastic frame member having a plate portion and a central wall is provided. The central wall defines an interior region. The assembly further includes a first interconnect member that is coupled to the plate portion that is electrically coupled to a first electrical terminal of a first battery cell. The first interconnect member has a spade lug. The assembly further includes a removable wire harness assembly having an adaptor body, a spade clip, and an electrical cable. The spade clip is disposed in an aperture of the adapter member. The spade clip is electrically and physically coupled to the spade lug of the first interconnect member when the adapter member is at least partially disposed in the interior region.