A case a portable listening device. The case includes a housing having an interior space to receive the portable listening device; a lid attached to the housing; a rechargeable battery and first and second wireless power receiving elements configured to receive electric charge from a wireless power transmitter during a charging event. The case further includes switching circuitry that is configured to disable one of the first or second wireless power receiving elements during a charging event when the disabled element is receiving power less efficiently than the other element.

A rechargeable battery jump starting device with a control switch backlight system. The control switch backlight system is configured to assist a user viewing the selectable positions of the control switch for selecting a particular 12V or 24V operating mode of the portable rechargeable battery jump starting device in day light, sunshine, low light, and darkness.

A rechargeable battery jump starting device with a control switch backlight system. The control switch backlight system is configured to assist a user viewing the selectable positions of the control switch for selecting a particular 12V or 24V operating mode of the portable rechargeable battery jump starting device in day light, sunshine, low light, and darkness.

A method for power management for applications having duty-cycled high peak supply currents includes charging a buffer capacitor with a first current supplied by a battery, wherein the first current is limited by a current limiter. A load is supplied with a second current supplied by the buffer capacitor, wherein the second current comprises a pulsed current. The current limiter is controlled with at least one of a plurality of sensor inputs to limit a capacity degradation of the battery.

A pad for wirelessly charging wireless products selected from the group consisting of wireless hair clippers, wireless air compressors, wireless hair curling iron, wireless hair styles, wireless hair trimmer, wireless hair dryer, wireless hair massager, wireless hair straightener, wireless hair brush, wireless razor, wireless hot hair brush, wireless nose trimmer, wherein said pad includes permanent charging ports and temporary charging ports, said permanent charging ports having charging coils embedded in the pad, said temporary charging ports inserted with wireless charging modules to provide wireless charging capability. The size, number and orientation of the permanent and temporary charging ports can vary depending on the users's need.

A pad for wirelessly charging wireless products selected from the group consisting of wireless hair clippers, wireless air compressors, wireless hair curling iron, wireless hair styles, wireless hair trimmer, wireless hair dryer, wireless hair massager, wireless hair straightener, wireless hair brush, wireless razor, wireless hot hair brush, wireless nose trimmer, wherein said pad includes permanent charging ports and temporary charging ports, said permanent charging ports having charging coils embedded in the pad, said temporary charging ports inserted with wireless charging modules to provide wireless charging capability. The size, number and orientation of the permanent and temporary charging ports can vary depending on the users's need.

A computer-implemented method for increasing safety during charging of a vehicle battery of a vehicle by a charging station, the method comprising the steps of calculating a forecast value for a maximum safe charging current by the controller of the vehicle based on sensor data generated by sensors of the vehicle and adjusting the charging current provided by the charging station in response to the forecast value of a maximum safe charging current.

An aerosol generation device includes a power system having at least one supercapacitor and at least one battery. The power system is operable in a plurality of selectable operating modes. The aerosol generation device further includes a controller. The controller is configured to control a power flow of the at least one supercapacitor and a power flow of the at least one battery based on the selected operating mode. The plurality of operating modes includes a float mode in which a heater associated with the aerosol generation device is maintained substantially at an aerosol generation temperature. In the float mode the controller is configured to control a power flow of the power system to maintain the heater substantially at the aerosol generation temperature, and control the at least one battery to charge the at least one supercapacitor.

A vehicle power supply device converts power from high voltage to low voltage by selectively connecting a predetermined power storage element group to a low voltage electric load from a high voltage power supply formed by connecting power storage elements in series. A leakage current from the high voltage power supply is measured during the dead time period when the power storage element group is not connected to the low voltage electric load. When the value exceeds a predetermined value, the connection between the power storage element group and the low-voltage electric load is interrupted, so that electric shock is prevented.

A method and a voltage converter assembly for supplying energy to at least one electrical vehicle module. The assembly includes at least one voltage converter that is designed to convert an input voltage, provided by at least one supply source, into at least one predefinable output voltage, which is applied to the at least one vehicle module, a voltage monitor that is designed to detect the input voltage, and an evaluation and control unit that is designed to carry out the method for supplying energy to at least one electrical vehicle module. The supply source is loaded with a predefinable current level when the input voltage that is present exceeds a predefinable setpoint voltage value, the input voltage being converted into at least one output voltage if the input voltage remains above the predefinable setpoint voltage value despite the load on the supply source.