A method is provided comprising: detecting a connection between an electronic device and a battery charger; transmitting to the battery charger a first request for at least one of a first voltage level and a first current level; receiving from the battery charger a signal; and charging a battery of the electronic device with the signal.

A vehicle battery device comprising a vehicle battery is described. The vehicle battery has a first identifier and a second identifier. The first identifier is publicly ascertainable and associated to a discrete vehicle battery. The first identifier represents the associated vehicle battery to be uniquely distinct from other vehicle batteries. The second identifier is different from the first identifier, an electronically retrievable identifier, confidential, and ascertainable by conformance with a security protocol.

The present disclosure relates to a battery cell replacement detection apparatus and method, and is directed to providing a mechanism that can prevent the mount of non-genuine batteries in a battery pack by detecting whether the battery cell in the battery pack has been replaced. To achieve this, the present disclosure provides a configuration for detecting whether the battery cell mounted in the battery pack has been replaced by analyzing changes in a unique characteristic parameter, that depends on at least one chemical characteristic of the battery cell, during a process in which the battery cell mounted in the battery pack is charged and discharged.

An aspect of the disclosure includes a battery device installed in a system. The battery device includes a control integrated circuit (IC) configured to control an operation of the battery device, a memory configured to store a plurality of applications respectively corresponding to a plurality of systems, and a switching logic configured to confirm a protocol version. The protocol version is an identification ID for identifying a system of the plurality of systems. Further, the switching logic receives a message from the system in a mode in which the battery device is unable to perform a power operation. The switching logic provides the control IC with an application corresponding to the confirmed protocol version among the plurality of applications.

An apparatus includes of a first earbud and a second earbud, each including an interface chip and a case. The case includes a case interface chip configured to communicate data with, and transfer power to, interface chips of the first earbud and the second earbud. The case also includes a housing to provide enclosures for the first earbud and the second earbud. The case interface chip is mated with interface chips of the first earbud and the second earbud when the first earbud and the second earbud are inserted in the housing, and wherein the case, the first earbud, and the second earbud are configured to operate at a multiple, different bias voltage levels.

In one instance, disclosed herein is a fuel-powered charging system, comprising: an engine-generator set comprising: an engine operative to combust a fuel to generate mechanical energy; a fuel injector operative to inject the fuel into the engine; a doser operative to dose the fuel with an additive to increase a reactivity of the fuel; and a generator operative to convert the mechanical energy generated by the combustion of the fuel within the engine into a first electrical energy; a battery operative to output a second electrical energy; and at least one charger operative to charge the battery using the first electrical energy.

Disclosed is a method of communicating between an electric vehicle, a supply equipment, and a power grid, which is performed by an electric vehicle communication controller of the electric vehicle, the method including an operation of transmitting a discharge schedule including the amount of energy discharge, a discharge start time, and a discharge finish time to a supply equipment communication controller of the supply equipment or a power grid communication controller of a power grid operation server, receiving a discharge cost calculated according to the discharge schedule from the supply equipment communication controller or the power grid communication controller, and transmitting an authorization message for the discharge cost to the supply equipment communication controller or the power grid communication controller.

The present disclosure provides an earphone box-entering detection method, an apparatus, and a non-transitory computer-readable storage medium. The method includes: acquiring an acoustic signal picked up by an earphone; and determining that the earphone is in a box-entering state in response to determining that the acoustic signal matches a predetermined acoustic signal in the earphone. Through the present disclosure, the design can be simple and the cost is not high.

A power charging device with a direct charging mode includes a power conversion module, having a primary-side circuit electrically connected to a primary side of a transformer and an output rectifier circuit electrically connected to a secondary side of the transformer, configured to convert an AC input voltage to a DC output voltage, and a power control module electrically connected to the power conversion module, configured to provide a direct charging mode or a regular USB type-C output power supply mode. The direct charging mode is activated to perform programmable charging when a direct charging agreement is confirmed between the AC to DC power charging device and battery pack, otherwise the regular USB type-C output power supply mode is activated.

An electronic device is provided. The electronic device includes a housing, a wireless charging circuit, memory, comprising one or more storage media, storing instructions, and at least one processor communicatively coupled to the wireless charging circuit and the memory, wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to identify a mounting of an external device on the housing, identify a first charging mode, based on the mounting of the external device, identify the first charging mode as a preferred charging mode from among a plurality of charging modes including the first charging mode, receive a first ping signal from a wireless power transmission device via the wireless charging circuit, transmit, to the wireless power transmission device via the wireless charging circuit, information indicating that the first charging mode is supported, based on receiving the first ping signal, and receive first charging power from the wireless power transmission device via the wireless charging circuit based on the first charging mode and based on the wireless power transmission device supporting the first charging mode.