| 摘要 |
The present invention relates to a rechargeable battery pack (1) for a mobile terminal (10) of a wireless telecommunication system, with one or more battery cells (2), time reference means (3, 4) for generating relative time reference information (cv), identification means (5) for providing unique identification information (ID) allocated to the battery pack (1), and interface means (6) for transmitting said unique identification information (ID) and said relative time reference information (cv) to a connected mobile terminal (10) for updating real time information in the mobile terminal (10) on the basis of said unique identification information (ID) and said relative time reference information (cv). Further, the present invention relates to a mobile terminal (10) for a wireless telecommunication system, with interface means (11) for receiving unique identification information from a rechargeable battery pack (1) connected to said mobile terminal (10), real time means (14, 15) for generating real time information for the mobile terminal (10) and control means (12) for determining on the basis of received unique identification information (ID) if a connected battery pack (1) has been connected before and for updating said real time information on the basis of accurate time information (tm) depending on said determination result.
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