| 摘要 |
A wireless headset has a main unit and a battery module. A first and second sockets are arranged on the main unit and used for plug-in of the battery module. The main unit further has a charging control module. The charging control module has of a first voltage detector, a second voltage detector, a charger, a first switch, a second switch, a third switch and a fourth switch. The charging control is implemented by inputting the battery module or the DC adapter to one of the first and second sockets, and then determining the input voltages of the first and second sockets, respectively, by the first and second voltage detectors to control correspondingly the conductive state of the first, second, third and fourth switches, thus enabling the DC adapter to charge the battery module via the charger.
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