Patent ID: 7660601

Claim:
An adaptor module for use in connection with a personal digital assistant having a rechargeable first battery and a first electrical connector and a docking station having a second electrical connector, the adaptor module comprising: a housing sized and arranged to releasably secure the personal digital assistant; a third electrical connector carried by the housing for interfacing with the first electrical connector of the personal digital assistant; a fourth electrical connector carried by the housing for interfacing with the second electrical connector of the docking station; a rechargeable second battery; and a battery charging circuit which uses a charge received via the interface between the fourth electrical connector and the second electrical connector to selectively provide a charge to the rechargeable second battery and the rechargeable first battery via the interface between the third electrical connector and the first electrical connector; wherein an end of the housing has a shape which is adapted to be received in the docking station and which corresponds to a shape provided to an end of the personal digital assistant, wherein the end of the housing carries the third and fourth electrical connectors, and wherein the fourth electrical connector is located in a location which corresponds to a location of the first electrical connector on the corresponding end of the personal digital assistant.