Abstract: A battery arrangement (100) and a method for operating a battery arrangement are provided. The battery arrangement comprises an identity reader (115) and a battery system (120). The identity reader is configured to obtain an identity from an identifier (110) fastened to an immobile object (150). The battery system is distinct from the immobile object. The battery arrangement is configured to disable at least part of the battery system in response to the identity reader being unable to obtain the identity. The method comprises monitoring a sensor for obtaining an identity from an identifier fastened to an immobile object and disabling at least part of the battery system in response to failure to obtain the identity. Accordingly, an anti-theft solution for a battery arrangement is provided.

Abstract: A battery module comprises charging for connecting the battery module to a power source, a battery cell arrangement, and a DC-to-DC converter. A first terminal of the battery cell arrangement is connected to a first charging terminal. An input terminal of the converter is connected to the second terminal of the battery cell arrangement and another input terminal of the converter is connected to the second charging terminal. An output terminal of the converter is connected to the first terminal of the battery cell arrangement. The converter converts an input voltage (U3) received at its input terminals to an output voltage (U2) at the output terminal of the converter. The output voltage is higher than the input voltage. The battery module may for example be employed as a backup power source in a mobile communication base station. A switch arrangement may for example allow the converter to be bypassed.