Abstract: The invention relates to a method of monitoring battery characteristics in a radio terminal equipment arrangement. The method comprises measuring battery characteristics of a battery of one or more secondary units communicating with radio terminal equipment; establishing a low-power radio frequency (LPRF) connection between radio terminal equipment and a secondary unit of the radio terminal equipment arrangement. The method also comprises receiving, in the radio terminal equipment, the measured battery characteristics of the one or more secondary units via the established LPRF connection; and giving an indication, by the radio terminal equipment, relating to the battery characteristics of the one or more secondary units.

Abstract: The invention relates to a method for supporting in a mobile terminal 10,30 the operation of an accessory device 20,40 connected to this mobile terminal 10,30. In order to enable particularly flexible connections between a mobile terminal and accessory devices, it is proposed that the method comprises downloading application software 23,43 for the accessory device 20,40 to the mobile terminal 10,30 and running downloaded application software 15,35 for the accessory device 20,40 in the mobile terminal 10,30. It is ensured that a data exchange required for the operation of the accessory device 20,40 is enabled as a transparent bi-directional bit-stream between the downloaded application software 15,35 and the accessory device 20,40. The invention relates equally to a corresponding mobile terminal, to a corresponding communication system and to a corresponding software for such a mobile terminal.