A battery pack charger includes a housing, a first and a second battery pack receptacle for receiving a battery pack, a first and a second power supply, and a controller. The controller is electrically coupled to the first and the second power supplies to enable the controller to configure the first and the second power supplies to provide an amount of charging current. The battery pack charger includes a set of charging circuits electrically coupled to the first and second power supplies to receive the amount of charging current from the first and the second power supplies. The controller configured to direct all of or less than all of the amount of charging current from the first power supply to the first battery pack receptacle and all of or less than all of the amount of charging current from the second power supply to the first battery pack receptacle.

An interface for a battery pack and an electrical combination. The interface may include a battery-receiving portion configured to receive a battery pack and including a cavity. The cavity is defined by a pair of sidewalls with rails defining a groove between the rails and a lower surface of the cavity. The rails are stepped or angled along a battery insertion axis and are configured to guide the sliding engagement of a battery pack within the battery-receiving portion.

A charge-storage workstation system and method for controlling and monitoring several different battery chargers, for notifying a user of the charged status of several different batteries, for eliminating power consumption by inactive battery chargers, and for safe convenient storage of rechargeable-battery-powered tools. A frame, broad-set legs, narrow-set legs, top surface, and skirt support the tools and the other components. Electric power is supplied through an electric supply cord to a main GFCI outlet and to charger outlets. Various battery chargers are plugged into the charger outlets through sensors which sense current drawn by the battery chargers. A charge controller-monitor senses the current drawn by each battery charger through the corresponding sensor and reports the charged status of each battery as specified by the user.

Under user control, the charge controller-monitor can cut power to inactive battery chargers to reduce wasteful use of electric power.

A system for charging a plurality of cordless power tool batteries includes charging circuitry and a plurality of docking stations. The charging circuitry includes a plurality of electrical connectors connectable to up to j>1 electrical loads, and primary control circuitry to direct DC output power to kj of the electrical connectors that are connected to kj electrical loads, separately and in succession. The plurality of docking stations are connectable to the plurality of electrical connectors as the kj electrical loads. Each docking station includes charging ports to receive up to m>1 of the cordless power tool batteries, and secondary control circuitry to direct the DC output power to recharge nm of the cordless power tool batteries that are received by the plurality of charging ports, separately and in succession under control of the primary control circuitry.

Various systems and methods are provided for monitoring state of charge (SOC) of wireless headphones. In one embodiment, a method comprises initializing a state of charge (SOC) of the earbud battery based on battery voltage in response to transitioning from a non-charging mode to a charging mode of the wireless earbud. In another embodiment, a first system comprises a left earbud, a right earbud, and a charging case comprising a microcontroller unit that monitors a right earbud battery and a left earbud battery via the charging case. In another embodiment, a second system comprises a left earbud, a right earbud, and a charging case comprising at least one communication bus communicatively coupled to the left earbud and right earbud to compare and correct a total charge of the left earbud battery, the right earbud battery, and/or the charging case battery.

A charging port system for a vehicle includes a housing configured to be installed on a component in the vehicle. An input port is configured to be coupled to a vehicle charging port to receive electrical power. First and second output ports are provided on the housing. The second output port has a different shape than the first output port. A wireless charger is provided on the housing. The system also includes a net for securing devices, extendable arms for adjustable positioning, and an internal battery to ensure power availability and optimal power distribution, even when the vehicle is turned off.

A system and method for charging electronic candles. Electronic candles are received in one or more charging bases. The electronic candles are secured in place in the one or more charging bases. The one or more charging bases are received on a charging rack. The one or more charging bases are electrically connected to a power system of the charging rack to charge the electronic candles.

The present invention generally relates to automatic charging systems and methods for mobile devices that require more power than is possible with inductive chargers. A mobile device charging cabinet is provided, wherein each mobile device inserted for charging contains a charging receiver that is attached to a cover, such as a laptop cover. The cabinet further comprises a multiplicity of base stations, each of which provides a grid of conductive alternating polarity connection plates, spaced to accept two prongs similarly spaced on the bottom of the charging receiver. Power flows from the base station automatically through the charging receiver to the mobile device when it is placed on a surface containing a base station within the cabinet. Computer software is included to control and monitor all functionality of the system, such as optimal power flow and battery charging; and further provides key asset management tools to allow a user to know, for example, the number and exact location of all devices using the invention and under his or her control.

A rechargeable battery pack, in particular to an electrical contact apparatus for a rechargeable battery pack. The electrical contact apparatus includes a cell connector by way of which the electrical contact apparatus is electrically connectable to a battery cell, an electrical contact by way of which the electrical contact apparatus is connectable to a load and/or to a charging apparatus, and a flat connector for electrical and mechanical connection of the cell connector to the electrical contact. The cell connector is intermaterially connected in a first connecting region to the flat connector, and the flat connector is intermaterially connected in a second connecting region to the electrical contact. At least one intermaterial connection is effected using a welding process.

A battery adapter unit for an automatic clay thrower including a housing defining a battery receptacle area having a pair of input terminals to engage with battery contacts of a replacement battery and a first pair of protrusions defining a first recess therebetween; a slidable lever defining a catch to engage a corresponding projection on the replacement battery to slide with the replacement battery between a first position and second position when the catch is engaged with the projection, the projection corresponding to the rated voltage of the replacement battery; a pair of output terminals, one of the output terminals mounted in the first recess; and a circuit configured to be electrically connected to the replacement battery via the input terminals and to the output terminals, the circuit configured to adjust the voltage from the replacement battery and supplied to the output terminals.