Patent ID: 6946817

Claim:
A mobile communication device, comprising: a rechargeable battery for powering the mobile communication device; a Universal Serial Bus (USB) interface for connecting the mobile communication device to a USB host device; a charging subsystem coupled to the rechargeable battery and the USB interface, the charging subsystem being operable to charge the rechargeable battery with power received by the USB interface from the USB host device; means for requesting a power allotment from the USB host device, the power allotment controlling a maximum amount of power that the charging subsystem can draw from the USB host device; and means for determining if the power allotment received from the USB host device is less than a requested value, and if the power allotment is less than the requested value then resetting a USB connection between the mobile communication device and the USB host device in order to receive a new power allotment from the USB host device.