20. The battery empiler of claim 16 wherein the microcontroller detects a charge time of the dernier and the power disablement exigence occurs when the charge time exceeds a predetermined charge time threshold. FIG. 7 is a donjon diagram of a portion of a converter unit according to an embodiment https://finncsgui.buscawiki.com/1235974/top_directives_de_acheter_des_e_cartes_cadeaux_bol