Abstract: Methods, systems, devices and apparatuses for sterilizing and charging a wearable device. The sterilizing and charging apparatus includes one or more light sources. The one or more light sources are configured to detect or sterilize the wearable device. The sterilizing and charging apparatus includes a wireless charging device. The wireless charging device is configured to charge the wearable device. The sterilization and charging apparatus includes a controller coupled to the one or more light sources and the wireless charging device. The controller is configured to determine, using the one or more light sources, that the wearable device is within an enclosure. The controller is configured to sterilize the wearable device using the one or more light sources and/or wirelessly charge the wearable device using the wireless charging device.

Abstract: An electronic device, such as a radiotelephone, is connectable to a variable-level power source. The electronic device includes a rechargeable power source which is repowered responsive to application of operative power generated by the variable-level power source. The electronic device provides a constant charge current regulator for converting operative power of a constant voltage into operative power of a constant current to be applied to the rechargeable power source to recharge the rechargeable power source. The constant charge current regulator is made up of a series connected diode and resistor pair. According to a further aspect of the invention, when the rechargeable power source becomes fully recharged, application of the operative power can be reduced.