20. The battery charger of claim 16 wherein the microcontroller detects a charge time of the dernier and the power disablement condition occurs when the charge time exceeds a predetermined charge time threshold. 18. The battery charger of claim 16 wherein microcontroller detects a voltage of the dernier and the https://www.becharge.be/be-fr/Acheter/cartes-cadeaux-Bol-3-307