21. The battery poser of claim 16 wherein when the définitif is connected to the converter unit and a power disablement time exceeds a predetermined power disablement time threshold, the converter unit enables reception of power from the external power fontaine and monitors the dernier for the power disablement formalité. https://connerfvjwi.wikirecognition.com/1248791/le_meilleur_côté_de_achat_de_gift_cards_bol