A battery pack device includes a conduit compressing against a battery cell array. The conduit is to communicate fluid that is vented from an interior of a battery cell within the battery cell array along a non-linear vent path. The conduit can include an inlet that opens to a vent chamber of the battery cell array. The conduit can be a plate. A foot could extend from the conduit. The non-linear vent path could be a first vent path, and the foot could provide a portion of a second vent path.