Abstract: In one example, a portable apparatus comprises a battery and a battery protection unit. The battery protection unit comprises a switch and a fault protection module that is configured to disconnect the battery with the switch in response to a detected system fault involving the battery. The battery protection unit further comprises a reset module that is configured to disconnect the battery with the switch for a reset time period in response to a received system reset trigger signal.

Abstract: A mobile terminal capable of supporting a plurality of accessory functions with one or more accessories, the mobile terminal capable of supporting each accessory function in two or more modes, and each accessory storing a capability array indicative of the capabilities of the accessory. The mobile terminal comprises reading means for reading a capability array from an accessory; interpreting means for interpreting a capability array read by the reading means in accordance with a predefined format as including one or more fields, each field corresponding to an accessory function; identifying means for identifying a mode of an accessory function in dependence on the content of a field of the capability array, the field corresponding to the accessory function; and supporting means responsive to the identifying means for supporting the accessory function with the accessory in the mode identified by the identifying means.

Abstract: A mobile terminal capable of supporting a plurality of accessory functions with one or more accessories, the mobile terminal capable of supporting each accessory function in two or more modes, and each accessory storing a capability array indicative of the capabilities of the accessory. The mobile terminal comprises reading means for reading a capability array from an accessory; interpreting means for interpreting a capability array read by the reading means in accordance with a predefined format as including one or more fields, each field corresponding to an accessory function; identifying means for identifying a mode of an accessory function in dependence on the content of a field of the capability array, the field corresponding to the accessory function; and supporting means responsive to the identifying means for supporting the accessory function with the accessory in the mode identified by the identifying means.

Abstract: It is an objective of the present invention to provide an interface arrangement between a battery element (302) and an electronic device (301), e.g. a mobile phone, for reliable battery identification and for removal detection. The objectives of the invention are achieved with a combined analogue and digital interface between a battery element (302) and an electronic device (301) so that both analogue and digital data can be transferred from a battery element to an electrical device. Reliable digital authentication is used for determining if a battery element connected to an electronic device represents new battery technology. An analogue signalling scheme is used for identifying different battery elements representing older-generation battery technologies and for detecting battery removals. Digital data read from the battery element (302) may contain, for example, information for charging control, a discharge curve, and a serial number of the battery element.