Abstract: A containment system (100) includes a housing (106). A battery pack (104) is situated within the housing. One or more ports (114) are disposed along a surface of the housing. An effluent containment pouch (108) is coupled to the surface of the housing. The effluent containment pouch spans the one or more ports. The effluent containment pouch expands when an electrochemical cell (105) experiences a thermal runaway condition, capturing expelled effluent (116).

Abstract: A connector assembly (100,500) includes a plate (101,501) having a body (107,507) and one or more legs (108,109,110,508,509,510) extending distally from the body. The body can define an aperture (112,512). A flexible substrate (102,502) can electrically couple to the legs such that a portion (202,602) of the body extends distally from an edge (203,603) of the flexible substrate. A connector (103,503) is electrically coupled to the flexible substrate, with one or more circuit components (104,105,504,505) electrically coupled between the legs and the connector. The flexible substrate can define a perimeter (201,601) that is complementary in shape to an upper surface (122,522) of a busbar connector (106,506).