A battery pack configured to be housed in an electronic device, the electronic device including a near field communication (NFC) tag, the battery back including a battery housing. The battery housing includes a rechargeable battery cell configured to provide power to the electronic device, the rechargeable battery cell initially in a first power mode, an NFC antenna configured to detect a presence of the NFC tag within the electronic device, and processing circuitry including a memory and a processor, the memory in communication with the processor, the memory having instructions that, when executed by the processor, configure the processor to convert the rechargeable battery cell from the first power mode to a second power mode when the NFC antenna has detected the presence of the NFC tag within the electronic device.

A device charging system application to track one or more batteries configured to supply power to at least one load device and a central charging station in communication with the battery and including a transceiver and an electronic processor configured to define a virtual boundary within an area proximate to the central charging station, determine a proximate location of the battery, determine, based the location of the battery, whether the battery is within the virtual boundary, and transmit a command to the battery causing the battery to stop supplying power to the load device when the battery is not within the virtual boundary.

A battery charge and discharge protection method is to be implemented by a battery charge and discharge protection device, and controls power transfer to a load device based on results of detections of whether each of two batteries is correctly installed or reversely installed and whether each of the batteries is rechargeable or non-rechargeable. When any one of the batteries is reversely installed, power transfer from the batteries to the load device is disabled. When both of the batteries are correctly installed, the batteries are connected in parallel if they are both rechargeable and in series if they are both non-rechargeable, and power transfer from the batteries to the load device is enabled.

A method controls a charging or discharging current of a removable battery pack and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, using a first monitoring unit integrated in the removable battery pack and a further monitoring unit integrated in the electrical device. The method includes monitoring a defined control potential of a signal or data contact between the removable battery pack and the electrical device using the further monitoring unit.

An intelligent rechargeable battery pack having a battery management system for monitoring and controlling the charging and discharging of the battery pack is described. The battery management system includes a memory for storing data related to the operation of the battery, and the battery management system is also configured to communicate the data related to the operation of the battery to other processors for analysis.

A battery and a corresponding battery charger, wherein the battery charger can identify a type of the connected battery to ensure that an appropriate charging current is supplied.

Provided are a load detection system and a load detection method thereof. The load detection system includes an adjustable power supply (110) and a detection module (12). The adjustable power supply (110) and a to-be-detected load 120 together form a set load detection circuit (11), and the adjustable power supply (110) is configured to output a changing power supply signal to the to-be-detected load (120) through the set load detection circuit (11). The detection module (12) is configured to detect at least two changing electrical parameters in the set load detection circuit (11), acquire an equivalent resistance value of the to-be-detected load (120) according to the at least two changing electrical parameters, and detect whether the to-be-detected load (120) includes a charging device according to a non-linear change curve or a linear change curve formed by the equivalent resistance value and the power supply signal.

A method controls a charging or discharging current of a removable battery pack and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, using a first monitoring unit integrated in the removable battery pack and a further monitoring unit integrated in the electrical device. The method includes monitoring a defined control potential of a signal or data contact between the removable battery pack and the electrical device using the further monitoring unit.

One embodiment provides a battery pack including a housing, a plurality of battery cells supported by the housing, and a terminal block. The terminal block is configured to be coupled to a power tool to provide operating power from the plurality of battery cells to the power tool. The terminal block has a positive power terminal, a charging terminal, and a ground terminal. The battery pack also includes a charging circuit provided between the charging terminal and the plurality of battery cells. The charging circuit is configured to receive and transfer charging current above 12 Amperes to the plurality of battery cells during charging. The charging circuit includes a charging switch and a fuse coupled between the charging terminal and the charging switch.

The present invention relates to a converter unit for providing a supply current to a load device (2) using an energy storage device (6). The converter unit (1) comprises a controlling means (7) configured to set at least one charging parameter and/or a charging mode and to control charging of the energy storage device (6) based on the set charging parameter and/or the set charging mode; and at least a first terminal (S1), a second terminal (S2) and a third terminal (S3) for electrically connecting a two-pole status indicator light (8), wherein the controlling means (7) is configured to detect to which of the first terminal (S1), the second terminal (S2) and the third terminal (S3) the two-pole status indicator light (8) is connected and is configured to set the at least one charging parameter and/or the charging mode based on the detection result.