Abstract: A battery cell is configured to operate in within an electronic device. Determining the status of the battery cell includes using a strain gauge attached to the battery cell. A value of the dimension of the battery cell is established by use of the strain gauge. The status of the battery cell is determined based on the established dimension value compared to a reference value and a threshold related to the dimension of the battery cell. Related methods, devices and/or computer program products are described.

Abstract: A battery cell is configured to operate in within an electronic device. Determining the status of the battery cell includes using a strain gauge attached to the battery cell. A value of the dimension of the battery cell is established by use of the strain gauge. The status of the battery cell is determined based on the established dimension value compared to a reference value and a threshold related to the dimension of the battery cell. Related methods, devices and/or computer program products are described.

Abstract: A system measures a voltage of a battery of a user device, measures a temperature and an acceleration of the battery if a decrease in battery voltage is measured, and determines whether the battery is functioning properly based on one or more of the measured voltage, temperature, or acceleration of the battery.

Abstract: An electromagnetic vibrator for use in a portable communication device includes a housing including a track directed in a first dimension; a coiling including at least one coil turn, oriented in a second dimension essentially perpendicular to the first dimension, coiled around the track and being arranged to receive an electric voltage; a permanent magnet assembly arranged for motion along the track to which the permanent magnet assembly is tightly fitted; and a ferrofluid mixture placed between the track and the permanent magnet assembly allowing motion of the permanent magnet assembly in the first dimension in dependence of the electric voltage as supplied to the coiling.

Abstract: A system measures a temperature condition of a component of a mobile communication device, determines a battery of the mobile communication device based on the measured temperature condition, activates the determined battery, activates a temperature management device connected to the battery, and manages the measured temperature condition of the component with the temperature management device.

Abstract: A system measures a temperature condition of a component of a mobile communication device, determines a battery of the mobile communication device based on the measured temperature condition, activates the determined battery, activates a temperature management device connected to the battery, and manages the measured temperature condition of the component with the temperature management device.

Abstract: A system measures a temperature condition of a component of a mobile communication device, determines a battery of the mobile communication device based on the measured temperature condition, activates the determined battery, activates a temperature management device connected to the battery, and manages the measured temperature condition of the component with the temperature management device.

Abstract: A mobile terminal having a plurality of communication operation modes is operated by determining a current communication operation mode of the plurality of communication operation modes of the mobile terminal, determining a current voltage of a battery that powers the mobile terminal, comparing the current voltage of the battery with a battery voltage threshold associated with the current communication operation mode, and changing the current communication operation mode to another one of the plurality of communication operation modes based on the comparison of the current voltage of the battery with the battery voltage threshold associated with the current communication operation mode.

Abstract: A mobile electronic device is provided comprising a power supply configured to generate power based on oxygen. The mobile device may comprise an air inlet to supply air and a shutter to close said air inlet in case a sensor detects at least one predetermined gas.

Abstract: A method performed by an electronic device may determine a status of an energy source unit indicating performance of the energy source unit residing in the electronic device. The method may include performing a measurement over the energy source unit to produce a measured value that may be compared with a predetermined value, to generate a difference value, and the status of the energy source unit may determined based on the difference value.

Abstract: The present invention relates to an apparatus and method for charging a battery cell according to a charging scheme. The apparatus comprises a power supply and control unit for delivering a charging current to the battery cell according to said scheme, a current monitoring device for monitoring and measuring the charging current, a voltage monitoring device for monitoring and measuring the voltage over the battery cell, a charging terminator devised for terminating the charging of the battery when a predetermined charging criteria is met and a safety timer for starting a predetermined time interval when charging of the battery cell has reached its constant voltage. The predetermined charging criteria is met either when the charging current is falling below a predetermined limit or when the charging current has not decreased a predetermined amount, ?I, within the predetermined time interval.

Abstract: A system measures a temperature condition of a component of a mobile communication device, determines a battery of the mobile communication device based on the measured temperature condition, activates the determined battery, activates a temperature management device connected to the battery, and manages the measured temperature condition of the component with the temperature management device.

Abstract: A system for charging a rechargeable battery supplies a current to the battery to charge the battery. The system determines a temperature associated with the battery and identifies a cutoff parameter based on the determined temperature. The system determines when the supplied current matches a value corresponding to the cutoff parameter and stops further supply of the supplied current to the battery when the supplied current matches the value corresponding to the current cutoff parameter.

Abstract: A system measures a voltage of a battery of a user device, measures a temperature and an acceleration of the battery if a decrease in battery voltage is measured, and determines whether the battery is functioning properly based on one or more of the measured voltage, temperature, or acceleration of the battery.

Abstract: A mobile terminal having a plurality of communication operation modes is operated by determining a current communication operation mode of the plurality of communication operation modes of the mobile terminal, determining a current voltage of a battery that powers the mobile terminal, comparing the current voltage of the battery with a battery voltage threshold associated with the current communication operation mode, and changing the current communication operation mode to another one of the plurality of communication operation modes based on the comparison of the current voltage of the battery with the battery voltage threshold associated with the current communication operation mode.

Abstract: An electromagnetic vibrator for use in a portable communication device (90) comprising a housing (20,30,40,50,60,70,80) comprising a track directed in a first dimension, a coiling (22,82) comprising at least one coil turn, oriented in a second dimension essentially perpendicular to the first dimension, coiled around the track and being arranged to receive an electric voltage, a permanent magnet assembly (26,32,34,42,52,62,72,84) arranged for motion along the track to which said permanent magnet assembly is tightly fitted, and a ferrofluid mixture placed between the track and the permanent magnet assembly (26,32,34,42,52,62,72,84), allowing motion of the permanent magnet assembly (26,32,34,42,52,62,72,84) in the first dimension in dependence of the electric voltage as supplied to the coiling (22,82).

Abstract: A system for charging a rechargeable battery supplies a current to the battery to charge the battery. The system determines a temperature associated with the battery and identifies a cutoff parameter based on the determined temperature. The system determines when the supplied current matches a value corresponding to the cutoff parameter and stops further supply of the supplied current to the battery when the supplied current matches the value corresponding to the current cutoff parameter.

Abstract: A power supply arrangement for supplying power from a battery (2) to an electric load (3) comprises a controlled switch (4) having a first state in which a connection is provided from the battery (2) to the load (3), and a second state in which the load (3) is disconnected from the battery (2), and a control circuit (5, 8, 9) for controlling the state of the controlled switch (4). The control circuit (5, 8, 9) is arranged to be disconnected from the battery (2) when the controlled switch (4) is in its second state. By disconnecting not only the electrical load, but also the control circuit from the battery, it is ensured that this circuit cannot draw any leakage current from the battery, when the load is switched off. This means that no over-discharge protection is needed in the battery itself.

Abstract: A portable communication device has an electromechanical transducer for converting mechanical energy, caused by movements of the portable communication device, into electrical energy for supplying power to the portable communication device. The electromechanical transducer is arranged to store mechanical energy after a respective movement of the portable communication device ceases.

Abstract: A method and apparatus for maintenance charging a battery is disclosed. A battery is fully charged using conventional CC-CV techniques and subsequently is maintenance charged by applying a first maintenance voltage to the battery for a first predetermined time period. If desired, a second maintenance voltage may be applied to the battery for a second predetermined time period. An apparatus for maintenance charging a battery utilizes a timer and a charge controller to apply a maintenance voltage to a battery for a predetermined time period.