Abstract: A method and device for testing a battery that powers a body-wearable medical device. The battery is contacted via battery contacts and a capacitor is arranged in parallel with the battery contacts. During the battery test, a first capacitor voltage U1 is determined at a first time t1 and a second capacitor voltage U2 is determined at a second time t2 subsequent to time t1. A test current is drawn between time t1 and time t2. t1 is determined by the beginning of drawing the test current and time t2 is determined such that the capacitor voltage at time t2 is in a steady state and is substantially constant while the test current is being drawn. A charging state of the battery is determined from the difference in voltage between U1 and U2 and/or from a time difference between the time t1 and time t2.

Abstract: Disclosed is an ambulatory infusion device, including a control unit and an electroacoustic transducer. The control unit is configured to operate the electroacoustic transducer as noise emitter or to operate the electroacoustic transducer as noise receiver and to determine from a received noise that is received by the electroacoustic transducer a state of the ambulatory infusion device.

Abstract: A method and device for testing a battery that powers a body-wearable medical device. The battery is contacted via battery contacts and a capacitor is arranged in parallel with the battery contacts. During the battery test, a first capacitor voltage U1 is determined at a first time t1 and a second capacitor voltage U2 is determined at a second time t2 subsequent to time t1. A test current is drawn between time t1 and time t2. t1 is determined by the beginning of drawing the test current and time t2 is determined such that the capacitor voltage at time t2 is in a steady state and is substantially constant while the test current is being drawn. A charging state of the battery is determined from the difference in voltage between U1 and U2 and/or from a time difference between the time t1 and time t2.

Abstract: Disclosed is an ambulatory infusion device, including a control unit and an electroacoustic transducer. The control unit is configured to operate the electroacoustic transducer as noise emitter or to operate the electroacoustic transducer as noise receiver and to determine from a received noise that is received by the electroacoustic transducer a state of the ambulatory infusion device.

Abstract: A power tool having a digital control unit is provided, an interface of the digital control unit being switchable between standard operation and communication operation. In communication operation, operating data of the power tool are able to be transmitted via the interface.

Abstract: The invention at hand describes Cu-(II)-oxygen adduct complexes, which are stable at room temperature, as well as methods for their production. In this, compounds of the general formula [L-Cu—O—O—Cu-L](BAr4)2 are concerned. Here, BAr4? is a tetraarylborate anion, selected from tetraphenylborate and tetrakis(3,5-trifluoromethyl)phenylborate. L represents a tripodal tetradentate ligand, wherein, each of the four binding sites of the tripodal tetradentate ligand is a nitrogen atom. Each of the three podal ligands is suitable for comprising an aliphatic amine or a nitrogen-containing heteroaromatic compound independently of one another. A bridge of one to four carbon atoms is located between the central nitrogen atom and the nitrogen atom of each of the podal ligands. The Cu-(II)-oxygen adduct complexes according to the present invention are produced, by initially reacting the ligand L with a Cu-(I) salt to [Cu-L]X.

Abstract: The invention at hand describes Cu-(II)-oxygen adduct complexes, which are stable at room temperature, as well as methods for their production. In this, compounds of the general formula [L-Cu—O—O—Cu-L](BAr4)2 are concerned. Here, BAr4? is a tetraarylborate anion, selected from tetraphenylborate and tetrakis(3,5-trifluoromethyl)phenylborate. L represents a tripodal tetradentate ligand, wherein, each of the four binding sites of the tripodal tetradentate ligand is a nitrogen atom. Each of the three podal ligands is suitable for comprising an aliphatic amine or a nitrogen-containing heteroaromatic compound independently of one another. A bridge of one to four carbon atoms is located between the central nitrogen atom and the nitrogen atom of each of the podal ligands. The Cu-(II)-oxygen adduct complexes according to the present invention are produced, by initially reacting the ligand L with a Cu-(I) salt to [Cu-L]X.