A power tool including a battery pack interface configured to receive a battery pack. The battery pack interface includes one or more power terminals and one or more communication terminals. The power tool further includes a controller having an electronic processor. The controller is configured to receive, via the one or more communication terminals, a plurality of signals indicating a plurality of temperatures of the battery pack. The controller is further configured to determine, based on the signals, a battery pack type. The controller is further configured to control discharge of the battery pack based on the battery pack type.

A system, a method, and a device for detecting and charging electronic articles, and more particularly for charging batteries in electronic cigarettes.

The invention relates to a lighting device (100) comprising a lighting unit (102), at least one application unit (104), and a battery housing (106) comprising a first battery compartment (108) with a first electrical contact set (110) for accommodating and connecting a first battery and with a second battery compartment (112) with a second electrical contact set (114) for accommodating and connecting a second battery, wherein the first and second battery compartments are configured to force an exclusive spatial accommodation of only one of the first and second batteries in the battery housing at a given point in time. The lighting unit is electrically connected to the first electrical contact set for being powered by the first battery in a first operational mode and the application unit is electrically connected to the second electrical contact set for being powered by the second battery in a second operational mode.

A battery charging method applied to a terminal, includes: charging a battery with an initial-stage charging current in an initial stage, until a charge state of the battery satisfies a preset condition, wherein the initial-stage charging current is a maximum tolerable charging current of the battery determined according to charging configuration information of the battery; and charging the battery with a subsequent-stage charging current in a subsequent stage after the initial stage, wherein the subsequent-stage charging current is determined according to the charging configuration information and is smaller than the maximum tolerable charging current.

Provided are a wireless charging system, device, and method and a device to be charged. The wireless charging system includes the wireless charging device and the device to be charged. The wireless charging device includes a wireless transmitter circuit and a first communication control circuit. The device to be charged includes a battery, a wireless receiver circuit, a first charging channel, a detection circuit and a second communication control circuit. The second communication control circuit is configured to perform wireless communication with the first communication control circuit based on the output voltage and/or the output current of the wireless receiver circuit detected by the detection circuit, such that the first communication control circuit adjusts a transmitting power of the wireless transmitter circuit, to enable the output voltage and/or the output current of the wireless receiver circuit to match a charging stage where the battery presently is.

A system is provided with a set of removable battery packs and a set of power tools each including a motor, a controller, and a battery receiving portion. For each power tool, the controller is configured to identify a type of battery pack coupled to the battery receiving portion and limit a maximum amount of electric current drawn from the battery pack by the motor based on the identified type of the battery pack. The greater a ratio of an impedance of the motor to an impedance of the battery pack, the less the controller limits the maximum amount of electric current drawn from the battery pack such that for a given battery pack of the set of removable battery packs, the lower the impedance of the motor, the more current the motor draws from the given battery pack.

Predictive rechargeable battery management is provided, which includes obtaining performance data on a battery cell of multiple rechargeable battery cells within a product, and comparing the performance data of the battery cell to statistical data on battery cell performance of a plurality of battery cells. Further, the managing includes determining, based on the comparing, that performance of the battery cell is trending away from the statistical data of battery cell performance of the plurality of battery cells. Further, the managing includes performing a battery-related action based on the performance of the battery cell trending away from that of the plurality of battery cells.

Methods and apparatus for controlling charge current in a battery pack containing cells of disparate types are disclosed. The methods include receiving a charge current for charging a battery pack that includes one or more battery cells of a first cell type, and one or more battery cells of a second cell type. Each battery cell of the first cell type has a first impedance and a first charge current limit. Each battery cell of the second cell type has a second impedance greater than the first impedance and a second charge current limit greater than the first charge current limit. The methods include reducing, by a respective current control circuit associated with each battery cell of the first cell type, the amount of the received charge current through the battery cell of the first cell type to an amount less than the first charge current limit.

Cross-charging among a set of wireless charging IoT devices using prioritizing management rules is disclosed. Device battery status data is received from each wireless charging device in the set of wireless charging devices. A device usage pattern is generated based on user profile data for each wireless charging device in the set of wireless charging devices. At least one priority management rule (PMR) is assigned to at least one wireless charging device in the set of wireless charging devices based on the device battery status data and user profile data from each wireless charging device in the set of wireless charging devices. At least one cross-charging instruction is transmitted to at least one wireless charging device in the set of wireless charging devices based on the at least one PMR.

One exemplary embodiment provides a charging and discharging control apparatus for an energy storage apparatus, the charging and discharging control apparatus including: a charging and discharging controlling unit configured to control a charging and discharging current amount of the energy storage apparatus according to a droop curve; a communication unit configured to receive state information from the energy storage apparatus; and a droop curve adjusting unit configured to adjust a characteristic value of the droop curve according to the state information.