Patent ID: 7990104

Claim:
A mobile charger receptacle configured with a universal serial bus (USB), a cigarette lighter adapter (CLA) plug, and control firmware, comprising: a housing, a cigarette lighter plug disposed on one side of the housing, and a USB plug on another side of the housing, wherein the USB and the CLA plug are electrically connected with the control firmware disposed inside the housing, the control firmware including a control application and a micro control unit (MCU), the control firmware executing the following steps: Step ( 100 ), detecting whether the USB plug is connected to an electronic component and detecting whether the electronic component is a data storage device or not, Step ( 200 ), if the MCU determines the electronic component is a data storage device, the control application is configured to charge a device battery from the power bus of the USB to obtain power from the cigarette lighter adapter, namely, to operate as a self-powered USB peripheral device, Step ( 300 ), if the MCU determines that the electronic component is not a data storage device, the USB connection will be inactive, and the control application activates the USB connection, and charges the battery from the power bus of the USB, which obtains power from the cigarette lighter adapter, and Step ( 400 ), repeating step ( 300 ) until the battery is saturated to the electrical volume of the battery.