Patent ID: 8072183

Claim:
A charging accessory for a portable electronic device having a device input connector, said accessory comprising: a main charger body portion comprising: a power supply connection to an AC wall outlet that receives an AC power supply voltage; power conversion circuitry that converts the AC power supply voltage to a DC power supply voltage; a device connector that is electrically coupled to the DC power supply voltage and configured to couple the DC power supply voltage to the device input connector of the portable electronic device; a battery pack connector that is electrically coupled to the DC power supply voltage; and a battery pack comprising: a charging body connector that electrically connects to the battery pack connector and receives the DC power supply voltage when the battery pack is mounted on the main charger body portion, a rechargeable battery that receives the DC power supply voltage to recharge the rechargeable battery; and a device connector that allows said battery pack to be coupled to the device input connector on said portable electronic device such that said rechargeable battery provides power to said portable electronic device.