A connector assembly that includes an electrical connector and an electrically conductive busbar. These strands are made of a glass offering an excellent compromise between its mechanical properties, represented by the specific Young’s modulus, and its melting and fiberizing conditions. The improvement in cell selection lies in assembling the list of candidate cells prior to cell selection. In an embodiment, at least one impedance-matching circuit includes a chain of selectable air-core inductors which are novelly arranged to improve radiation efficiency and prevent damage to support substrates. The shield via plug is in an electrically-floating state.