A charging method for a terminal device includes establishing a charging current mapping relationship according to a relationship between a charging information parameter and an open circuit voltage of a first electrode of a battery of the terminal device and a relationship between the charging information parameter and an impedance of the first electrode of the battery. The charging current mapping relationship comprises a mapping relationship between the charging information parameter and a maximum battery charging current. The charging method also includes obtaining the charging information parameter of the battery during a charging operation, determining a charging current according to the charging information parameter and the charging current mapping relationship, and charging the battery by using the charging current.

A battery charge control apparatus to be installed in a vehicle includes a current regulation circuit and a controller. The vehicle is provided with a first battery, a voltage converter, a second battery, and an onboard device. The voltage converter lowers an output voltage of the first battery. The second battery is electrically charged by an output from the voltage converter and outputs a voltage lower than an output voltage of the first battery. The onboard device is operated by an output from the second battery and an output from the voltage converter. The current regulation circuit is disposed between the voltage converter and the second battery and reduces an amount of a charging current to be delivered via the voltage converter to the second battery. The controller controls the current regulation circuit on the basis of an output current from the voltage converter.

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

A power circuit for a dual voltage range charging station is disclosed. The power circuit comprises a first group comprising at least one DC power module, the first group having a first corresponding terminal and a second corresponding terminal; a second group comprising at least one DC power module, the second group having a first corresponding terminal and a second corresponding terminal; a configuration selection unit operatively connected to the first corresponding terminal of the first group, to the second corresponding terminal of the first group, to the first corresponding terminal of the second group and to the second corresponding terminal of the second group; wherein in a first configuration, the first corresponding terminal of the first group is operatively connected to the first corresponding terminal of the second group and the second corresponding terminal of the second group is operatively connected to the second corresponding terminal of the second group and a first given voltage is provided between the first corresponding terminal of the first group and the second corresponding terminal of the second group and further wherein in a second configuration, the second corresponding terminal of the first group is operatively connected to the first corresponding terminal of the second group and a second given voltage greater than the first given voltage is provided between the first corresponding terminal of the first group and the second corresponding terminal of the second group.

The present disclosure relates to a hearing aid having at least two wireless interfaces, where the operation of one wireless risk introducing noise into the at least second wireless interface. The first wireless interface being configured so that it does not, or at least to a limited degree, introduce noise into the second wireless interface.

Embodiments of the present invention disclose a charging management system and method, a device, and a storage medium, wherein the system includes a microprocessor configured for acquiring current electric quantity parameters of at least two to-be-charged batteries; a control terminal of the microprocessor is connected to a controlled terminal of at least two charging circuit switches for determining whether to charge the at least two to-be-charged batteries according to the current electric quantity parameters and controlling an on-or-off state of any of the at least two charging circuit switches according to a working state of a power source. In the embodiments of the present invention, the microprocessor centrally manages a condition of charging multiple to-be-charged batteries with multiple power sources, without a DC-DC circuit, and realizing the automatic charging management of multiple to-be-charged batteries at reduced hardware costs.

An energy storage system has one or more energy storage units, each energy storage unit including one or more energy storage modules, and each energy storage module including a plurality of electrochemical energy storage devices connected in series. A DC switching device is provided in series with the or each energy storage unit. The DC switching device includes a semiconductor device and a rectifying unit in parallel with the semiconductor device.

An electronic includes: a battery; a power supply circuit electrically connected to the battery; and a processor configured to receive power through the power supply circuit, wherein the power supply circuit may be further configured to, based on a ship mode command received from the processor at a first time, switch an operation mode of the electronic device to a ship mode of the electronic device by shutting off power supplied to the processor by the battery at a second time that is delayed from the first time by a preset time.

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to cause the charging circuit to provide a charging current to a resonant circuit when a receiving device is placed on the charging surface, provide a measurement slot by causing the charging circuit to decrease or terminate the charging current for a period of time and determine whether the receiving device has been removed from the charging surface based on measurement of a characteristic of the resonant circuit during the measurement slot. The characteristic of the resonant circuit may be representative of electromagnetic coupling between a transmitting coil in the resonant circuit and a receiving coil in the receiving device.