A system for managing transferring of electrical power includes a power converter and a controller. The power converter is configured for receiving input power from a power source through a first connector, converting the input power to output power using a power conversion information based on the receiving, and supplying the output power to a power storage device through a second connector based on the converting. The power storage device includes an ultra-wideband gap semiconductor material. The supplying of the output power includes charging the power storage device based on the output power and the ultra-wideband gap semiconductor material. The power storage device stores power based on the charging. The controller is communicatively coupled with the power converter. The controller is configured for generating the power conversion information.

A charging system comprises a coupler configured to be coupled to an inlet of a vehicle and including a user interface, the user interface including a momentary switch mounted on the outer surface of the coupler and configured to receive a user input for an output current level selected by a user; and a light display mounted on the outer surface of the coupler and configured to illuminate a light to visually show the user selected output current level; and an in-cable control and protection device (ICCPD) disposed within a cable, the ICCPD configured to receive the user input from the momentary switch; determine an output current level that the charging system operates at, among the user selected output current level or a current limit level; and transmit back the user selected output current level to the coupler, wherein the vehicle is charged with the determined output current level.

A charger, a charging control circuit, and a method for controlling a charger. The charger includes a housing, a knob, a knob detection structure, a main control board, a display, and a charging control unit. The knob detection structure is configured to detect at least rotation parameters of the knob, and the rotation parameters include at least one of a rotation angle and a rotation direction. The main control board is configured to control the charging control unit to operate according to at least the rotation parameters, and the main control board is further configured to control the display to display charging information of the charging control unit.

A circuit device includes a charging circuit configured to charge a battery and a control circuit configured to control the charging circuit. The battery is provided with a protection circuit of the battery that comes into a shutdown state when the battery is in an over-discharge state. The control circuit causes the charging circuit to increase the charging current from an initial current value larger than zero to start constant-current charging of the battery when the shutdown state of the protection circuit is released.

A method including: monitoring a power supply from a line power source; monitoring a temperature of one or more of a battery and a super-capacitor, when power is available through the line power source: supplying power directly from the line power source to the supported system; and supplying power directly to the charger to charge the battery and the super-capacitor, and in the event of a detected line power outage, supplying power to the supported system from one or more of the battery and super-capacitor based at least on the detected temperature of the one or more of the battery and super-capacitor.

A device and method for actively pre-charging an inverter capacitor includes a switched bypass pre-charging path having one or more power switches for selectively connecting and disconnecting the battery and the inverter capacitor in response to one or more first switching control signals having a configurable duty cycle, where one or more processor units are configured with a predictive active pre-charging module to control active pre-charging of the inverter capacitor from the battery by using low-frequency measurements of a battery voltage and an inverter capacitor voltage to periodically determine the configurable duty cycle for the one or more first switching control signals that is applied over a plurality of specified charging intervals to actively pre-charge the inverter capacitor to the battery voltage.

Implementations of an electronic power unit may include a heater disposed in a battery pack, the heater electrically coupled with a heater controller and with a battery controller; and an exterior case, the exterior case enclosing the heater and the battery pack, the exterior case including an end that accommodates the power input of a military vehicle, the end including a coaxial connector.

A method for dynamically adjusting power, a battery management system, a device, a medium, and a vehicle are disclosed. The method for dynamically adjusting power includes acquiring power information, calculating a discharge power integral value within a preset time threshold, calculating a discharge energy according to the power information, and determining whether it is necessary to adjust the maximum allowable output power from first time discharge power to second time discharge power, or to adjust the maximum allowable output power from the second time discharge power to the first time discharge power based on the discharge power integral value and the discharge energy.

A battery management system includes a sensing unit to generate a sensing signal indicating a battery voltage and a battery current of a battery, a memory unit to store a charge map recording a correlation between first to n.sup.th reference state of charge (SOC) ranges, first to n.sup.th reference currents and first to n.sup.th reference voltages for multi-stage constant-current charging, and a control unit to change to constant voltage charging using a k.sup.th reference voltage corresponding to a k.sup.th reference SOC range in response to the battery voltage having reached the k.sup.th reference voltage during constant current charging using a k.sup.th reference current corresponding to the k.sup.th reference SOC range to which an SOC of the battery belongs. The control unit updates the k.sup.th reference current of the charge map based on a time-series of the battery current in a charging period of the constant voltage charging.

Various systems and methods are provided for monitoring state of charge (SOC) of wireless headphones. In one embodiment, a method comprises initializing a state of charge (SOC) of the earbud battery based on battery voltage in response to transitioning from a non-charging mode to a charging mode of the wireless earbud. In another embodiment, a first system comprises a left earbud, a right earbud, and a charging case comprising a microcontroller unit that monitors a right earbud battery and a left earbud battery via the charging case. In another embodiment, a second system comprises a left earbud, a right earbud, and a charging case comprising at least one communication bus communicatively coupled to the left earbud and right earbud to compare and correct a total charge of the left earbud battery, the right earbud battery, and/or the charging case battery.