A battery device includes at least one battery cell configured to store electricity, and a management chip coupled to the battery cell. The management chip controls the battery cell to discharge at a constant power. A plurality of voltage ranges or battery capacity ranges and a plurality of over-discharge current protection values corresponding to the voltage range or battery capacity range are set in the management chip. After the management chip detects and determines that the voltage or the battery capacity of the battery cell has fallen in one of the voltage ranges or battery capacity ranges, the management chip sets the over-discharge current protection value corresponding to the voltage range or battery capacity range as the present over-discharge current protection value of the battery device.

Provided is a charging detection circuit, a charging case and a communication apparatus of charging. The charging detection circuit includes: a first touch point, a second touch point, a switching circuit, a charging circuit, a detecting circuit and a first communication circuit, where the switching circuit is connected to the first touch point; the charging circuit is connected to the detecting circuit via the second touch point; the first communication circuit is connected to the first touch point and/or the second touch point; when a supply voltage of the first touch point is a system voltage, and the first touch point and the second touch point are both in contact with a first device, the detecting circuit triggers the first communication circuit to acquire a state of charge of the first device.

Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device.

A control method is provided for controlling an electronic device having a main body. The control method may include: in response to the electronic device being activated and a primary battery being functionally connected to the main body of the electronic device, controlling the primary battery to power the electronic device; and in response to the electronic device being activated and the primary battery being functionally disconnected from the main body of the electronic device, controlling a backup battery to power the electronic device.

A surgical instrument includes a shaft, an end effector extending distally from the shaft, and a housing extending proximally from the shaft. The housing includes a motor configured to generate at least one motion to effectuate the end effector, and a power source configured to supply power to the surgical instrument, wherein the power source includes a casing, a data storage unit, and a deactivation mechanism configured to interrupt access to data stored in the data storage unit. In addition, the power source includes a battery pack and a deactivation mechanism configured to deactivate the battery pack if the casing is breached.

An electrical charging system for charging an autonomous robot powered by a re-chargeable battery and having a first charging member. The charging station includes a second charging member configured to receive the first charging member on the autonomous robot when the autonomous robot is docked with the charging station for charging the re-chargeable battery. There is a power supply configured to charge the re-chargeable battery of the robot and a sensor configured to measure an amount of charge transferred from the power supply to the robot. There is a processor configured to determine from the amount of charge transferred from the power supply to the robot measured by the sensor, a state of charge (SOC) of the autonomous robot. There is also a communications device configured to transmit to the robot the SOC of the robot while docked at the charging station.

In some examples, a controller circuit comprises: a voltage subtractor circuit having a subtractor output and first and second subtractor inputs, in which the first subtractor input is adapted to be coupled to a first current terminal of a transistor, the second subtractor input is adapted to be coupled to a second current terminal of the transistor; a gate control circuit having a gate control input and a gate control output, the gate control input coupled to the subtractor output, the gate control output adapted to be coupled to a gate of the transistor; and a discharge circuit having a discharge circuit input and a discharge circuit output, the discharge circuit input coupled to the gate control circuit, the discharge circuit output adapted to be coupled to the first current terminal of the transistor.

An innovative smart battery switch enhances the affordability and reliability of sustainable energy. The core of this system is a smart switch capable of alternating between series and parallel modes. In the parallel off-mode, it automatically enables battery charging and cell equalization, thereby replacing complex and expensive battery management systems. This feature, coupled with the system's low voltage charging capability, significantly extends battery lifespan by minimizing cell stress. The integrated kinematic charger optimizes solar photovoltaic (PV) energy utilization, adapting efficiently to varying solar conditions. This charger not only improves solar energy conversion efficiency but also reduces the solar panel size requirement, making sustainable energy solutions more accessible. The system's adaptability, including variable voltage outputs and IoT compatibility, extends its applications to a range of devices, from LED lighting to electric vehicles, offering a cost-effective, sustainable approach to energy management.

In an electric power device and a method for controlling the same, a first circuit is electrically connected to a first battery tray and a second battery tray, a second circuit is electrically connected to the first battery tray, and a third circuit is electrically connected to the second battery tray. Between the first circuit and the second circuit, a first resistor unit is connected in series with the first battery tray, and a first interrupting unit is connected in parallel with the first resistor unit. Between the first circuit and the third circuit, a second resistor unit is connected in series with the second battery tray, and a second interrupting unit is connected in parallel with the second resistor unit.

Carrying cases for electronic flares or other electronic signal emitting devices and related systems and methods.