A portable power charger is provided. The portable power charger includes a port configured to connect to a cable configured to connect to a battery and a safety circuit. The safety circuit is configured to: a) determine that the port is connected to the battery via the cable; b) determine that one or more battery factors of the battery meet one or more corresponding battery thresholds; and c) determine that one or more power charger factors of the portable power charger meet one or more corresponding power charger thresholds. The portable power charger also includes a charging circuit configured to determine a current state of the battery and provide an associated charge to the battery based on the current state.

A portable power charger is provided. The portable power charger includes a port configured to connect to a cable configured to connect to a battery and a safety circuit. The safety circuit is configured to: a) determine that the port is connected to the battery via the cable; b) determine that one or more battery factors of the battery meet one or more corresponding battery thresholds; and c) determine that one or more power charger factors of the portable power charger meet one or more corresponding power charger thresholds. The portable power charger also includes a a resistance analyzer configured to measure a resistance of the battery and an alert generator configured to generate an alert to signal when the battery is faulty based on the measured resistance.

An adapter includes: a power input terminal for connecting an AC power supply; a power circuit that performs energy conversion on the inputted AC power to obtain electrical energy capable of powering a power tool; and a tool interface connected to a power interface of the power tool to output electrical energy. The adapter further includes a data transmission module connected to at least the tool interface and capable of outputting first communication data and/or first internal resistance data to the tool interface so that the power tool is capable of identifying the adapter according to the first communication data and/or the first internal resistance data. The first communication data includes at least adapter identification data, and the adapter identification data enables the power tool to identify that a connected device is the adapter between the adapter and a battery pack.

A device includes an AC impedance circuit to apply an AC excitation signal to a set of battery cells of a battery pack. The device includes a controller to determine a battery pack identification (ID) value from a battery pack identification (ID) circuit of the battery pack, calculate an impedance value of the battery pack based on the AC excitation signal, identify a maximum charging rate to charge the battery pack using the battery pack ID value of the battery pack and the impedance value of the battery pack, where the battery pack is one of at least two battery packs having a same battery pack ID value with different maximum charging rates, and set a charging rate to charge the battery pack using the maximum charging rate.

An on-board charger for an electric vehicle includes a vehicle port configured to be connected to an external charger comprising a first relay located on an internal first power supply path, a power converter, a second relay located on a second power supply path between the vehicle port and the power converter, and a controller configured to turn off the first relay and the second relay in response to triggering a vehicle-to-grid (V2G) protection operation based on power-related parameters.

Systems, methods, and computer-readable media are disclosed for dynamic adjustments to battery charging using battery metrics. The device may determine a first value indicative of a battery voltage output during a first time interval, determine a second value indicative of a temperature of the battery during the first time interval, and determine a first adjusted number of charge cycles. The device may determine a total adjusted number of charge cycles of the battery from initial use to an end of the first time interval using the first adjusted number of charge cycles, and a historical adjusted number of charge cycles, determine that the total adjusted number of charge cycles is greater than a threshold, and cause a first battery charging configuration change to be implemented.

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 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.

Disclosed is a system for managing a battery, the system comprising a first processor, a second processor, an isolator, a sensor unit, a switch unit, etc. The isolator can be disposed between the first processor and the second processor, and the first processor and the second processor can transmit and receive information through the isolator. The first processor can transmit monitoring request signals for a plurality of nodes to the second processor through the isolator, and the second processor can transmit voltage values for the plurality of nodes to the first processor.

An abnormality detection system includes a removable battery and a server. The removable battery has: a detector; a battery side acquisition unit for acquiring measured data that are the data of measured values measured by the detector and acquiring, from an object to be electrically driven, first recognition data for recognizing the object to be electrically driven; and a battery side storage unit. The server has: a server side storage unit for prestoring reference data that are the data acquired when the object to be electrically driven performs a predetermined operation; a server side acquisition unit for acquiring the measured data, the first recognition data, and second recognition data; and an abnormality detection unit for comparing actual work data obtained from the measured data with the reference data and detecting an abnormality when the difference between the actual work data and the reference data exceeds a threshold value.