Abstract: A battery pack includes an outer housing and a plurality of pouch cells arranged within the outer housing. Each of the plurality of pouch cells has a first cell end, a second cell end, and a cell side surface provided between the first cell end and the second cell end. The cell side surface includes a first face, a second face, and a third face. Each of the plurality of pouch cells has a thickness in a first direction extending between the first cell end and the second cell end and has a two-dimensional projection in a plane that is orthogonal to the first direction.

Abstract: A temperature controlled enclosure that includes a temperature control device for controlling the temperature within an internal cavity of the temperature controlled enclosure. The temperature controlled enclosure also includes one or more charging ports for receiving and charging a battery pack. A controller within the temperature controlled enclosure controls the temperature within the internal cavity to a predetermined or desired temperature (e.g., 20° C.). When a battery pack is received in the one or more charging ports, the temperature of the battery pack can be determined. If, for example, the temperature of the battery pack is below 0° C., the battery pack is allowed to warm up inside the temperature controlled enclosure before the battery pack is charged.

Abstract: A battery charger may include a printed circuit board (PCB) having a first portion supporting alternating current (AC) electrical components and a second portion supporting direct current (DC) electrical components; an indicator including a light-emitting diode (LED) supported on the first portion of the PCB and operable to emit light; and an isolating member positioned on the first portion between the AC electrical components and the LED. A trace on the PCB may be electrically connected to the second portion of the PCB, the trace extending from the second portion and along the first portion, and the LED may be electrically connected to and receiving DC power through the trace, the LED being selectively positioned along a length of the trace. The LED may be positioned more than about 8 mm from the AC electrical components.

Abstract: Temperature sensing circuits for devices described herein include a substrate material, a first conductive portion, a second conductive portion, and a third conductive portion associated with the substrate material, and a plurality of thermistors associated with the substrate material for sensing a temperature associated with the device. The plurality of thermistors include a first thermistor and a second thermistor. The first thermistor is connected to the first conductive portion. The first thermistor and the second thermistor are both connected to the second conductive portion. The second thermistor is connected to the third conductive portion.

Abstract: A temperature controlled enclosure that includes a temperature control device for controlling the temperature within an internal cavity of the temperature controlled enclosure. The temperature controlled enclosure also includes one or more charging ports for receiving and charging a battery pack. A controller within the temperature controlled enclosure controls the temperature within the internal cavity to a predetermined or desired temperature (e.g., 20° C.). When a battery pack is received in the one or more charging ports, the temperature of the battery pack can be determined. If, for example, the temperature of the battery pack is below 0° C., the battery pack is allowed to warm up inside the temperature controlled enclosure before the battery pack is charged.

Abstract: A temperature controlled enclosure that includes a temperature control device for controlling the temperature within an internal cavity of the temperature controlled enclosure. The temperature controlled enclosure also includes one or more charging ports for receiving and charging a battery pack. A controller within the temperature controlled enclosure controls the temperature within the internal cavity to a predetermined or desired temperature (e.g., 20° C.). When a battery pack is received in the one or more charging ports, the temperature of the battery pack can be determined. If, for example, the temperature of the battery pack is below 0° C., the battery pack is allowed to warm up inside the temperature controlled enclosure before the battery pack is charged.

Abstract: A battery pack includes a battery pack housing, a plurality of battery pack terminals, and a plurality of battery cells supported within the battery pack housing. At least one battery cell includes a battery cell terminal. The battery pack also includes a compound fuse electrically coupled between the battery cell terminal of the at least one battery cell and at least one battery pack terminal. The compound fuse comprises a first material and a second material that has a lower melting point than the first material. The compound fuse includes a first portion electrically coupled to the battery cell terminal, a second portion electrically coupled to the at least one battery pack terminal, and a fuse portion that connects the first portion to the second portion. The fuse portion is configured to establish a discontinuity between the first portion and the second portion during a hard short event.

Abstract: An electrical combination, a motorized device system, a motor assembly, a battery pack, and operating methods. The combination may include an electrical device including a device housing, a load supported by the device housing, the load being operable to output at least about 1800 watts (W), and a device terminal electrically connected to the load; a battery pack including a pack housing, battery cells supported by the pack housing, the battery cells being electrically connected and having a nominal voltage of up to about 20 volts, and a pack terminal electrically connectable to the device terminal to transfer current between the battery pack and the electrical device; and a controller operable to control the transfer of current.

Abstract: A battery pack including a supporting structure, a battery cell housed within the supporting structure, a sleeve partially surrounding the battery cell, a bus bar, and a wire. The sleeve extends over a portion of a first end of the battery cell and has a laser-cut cutaway portion exposing a laser-cleaned first bonding area of the first end of the battery cell. The laser-cleaned first bonding area is positioned adjacent to an outer perimeter of the first end of the battery cell. The bus bar has a laser-cleaned second bonding area. The wire is bonded to the first and second laser-cleaned bonding areas to electrically connect the battery cell to the bus bar.

Abstract: A battery pack including a first battery cell and a second battery cell. The first battery cell is received at least partially within a primary cell casing and extends along a first axis. The second battery cell is received at least partially within an auxiliary cell casing extending along a second axis, the second battery cell being movable relative to the first battery cell.

Abstract: An electrical system includes a conductor configured to carry energy from an electrical power supply, a receiver configured to output energy to an electrical component, and a connector electrically and mechanically connecting the conductor and the receiver. The connector includes a base and a head extending from the base along a longitudinal axis. The head includes a void defined therein by a radially inner surface and further includes a radially outer surface. At least a portion of the radially outer surface is curved about the longitudinal axis. The head is insertable into the receiver, and elastic deformation of the head causes the connector to press against the receiver to retain the connector and the receiver together.

Abstract: A battery charger may include a printed circuit board (PCB) having a first portion supporting alternating current (AC) electrical components and a second portion supporting direct current (DC) electrical components; an indicator including a light-emitting diode (LED) supported on the first portion of the PCB and operable to emit light; and an isolating member positioned on the first portion between the AC electrical components and the LED. A trace on the PCB may be electrically connected to the second portion of the PCB, the trace extending from the second portion and along the first portion, and the LED may be electrically connected to and receiving DC power through the trace, the LED being selectively positioned along a length of the trace. The LED may be positioned more than about 8 mm from the AC electrical components.

Abstract: An electrical combination, a motorized device system, a motor assembly, a battery pack, and operating methods. The combination may include an electrical device including a device housing, a load supported by the device housing, the load being operable to output at least about 1800 watts (W), and a device terminal electrically connected to the load; a battery pack including a pack housing, battery cells supported by the pack housing, the battery cells being electrically connected and having a nominal voltage of up to about 20 volts, and a pack terminal electrically connectable to the device terminal to transfer current between the battery pack and the electrical device; and a controller operable to control the transfer of current.

Abstract: An electrical combination, a motorized device system, a motor assembly, a battery pack, and operating methods. The combination may include an electrical device including a device housing, a load supported by the device housing, the load being operable to output at least about 1800 watts (W), and a device terminal electrically connected to the load; a battery pack including a pack housing, battery cells supported by the pack housing, the battery cells being electrically connected and having a nominal voltage of up to about 20 volts, and a pack terminal electrically connectable to the device terminal to transfer current between the battery pack and the electrical device; and a controller operable to control the transfer of current.

Abstract: A battery pack assembly includes a housing having a plurality of sides and defining an internal cavity, a plurality of battery cells received in the internal cavity, and battery electronics received in the internal cavity. A battery pack interface is supported by the housing and connectable to a device. An injection port is supported by the housing. The injection port includes one or more channels positioned on one or more of the sides of the housing. Each channel connects the internal cavity to an exterior of the battery pack. The injection port is configured to direct a fluid comprising adhesive material from the exterior of the battery pack into the internal cavity. The fluid is configured to cover at least one of a portion of the battery cells and a portion of the battery electronics.

Abstract: A temperature controlled enclosure that includes a temperature control device for controlling the temperature within an internal cavity of the temperature controlled enclosure. The temperature controlled enclosure also includes one or more charging ports for receiving and charging a battery pack. A controller within the temperature controlled enclosure controls the temperature within the internal cavity to a predetermined or desired temperature (e.g., 20° C.). When a battery pack is received in the one or more charging ports, the temperature of the battery pack can be determined. If, for example, the temperature of the battery pack is below 0° C., the battery pack is allowed to warm up inside the temperature controlled enclosure before the battery pack is charged.

Abstract: An inductive heater assembly for heating a power tool battery pack, the inductive heater assembly comprising a housing, a battery pack interface configured to receive the power tool battery pack, a charging base, a coil portion located within the housing. The coil portion including a first coil winding and a second coil winding configured to generate an electromagnetic field, wherein the first coil winding and the second coil winding to form a Helmholtz coil.

Abstract: An electrical device capable of emitting or absorbs energy relative a surrounding environment. The electrical device includes a housing, an interior volume defined in the housing, an energy sensor at least partially exposed to the surrounding environment, a first material having a first absorptivity, and a second material having a second absorptivity lower than the first absorptivity. The first material is nearer to the surrounding environment than the second material is at an energy sensor reading below a threshold energy range, and the first material is farther from the surrounding environment than the second material is at an energy sensor reading above the threshold energy range.

Abstract: Various modular systems including a power unit are shown. In one example, a power unit includes a solar panel, a power storage device and one or more power outlet interfaces. One of the surfaces of the power unit includes a coupling mechanism that permits that power unit to couple with modular storage units. In one embodiment, the modular system includes a frame and wheels coupled to the frame to permit the power unit to be more easily transported.