Abstract: A battery includes an anode, a cathode, one or more separators, and an electrolyte. The anode, the cathode, the one or more separators, and the electrolyte are disposed in a roll configuration. At least one of the anode or the cathode includes a foil portion having a plurality of bent portions in different widths that are bent inwardly toward an axis of the roll configuration and that define an edge of the roll configuration.

Abstract: An online concierge system generates an item graph connecting item nodes with attribute nodes of the items. When the online concierge system receives a search query to identify one or more items from a customer, the online concierge system parses the search query into combinations of terms and identifies item nodes and attribute nodes related to the search query. The online concierge system may determine that no item nodes meet presentation criteria. The online concierge system may determine that a reformulated search query has a higher conversion probability than the search query received from the customer. The online concierge system reformulates the search query. The online concierge system selects item nodes as search results. The online concierge system transmits the search results to the customer.

Abstract: An online concierge system generates a graph connecting items with attributes of the items and other items. Hence, the graph includes nodes corresponding to attributes and nodes corresponding to items, with an item connected to attributes of the item in the graph. Example attributes include a brand, a category, a department, or any other suitable information about the item. When the online concierge system receives a search query to identify one or more items from a customer, the online concierge system parses the search query into combinations of terms and compares different combinations of terms to the graph to determine connections between different combinations of terms in the graph. Based on measures of connectedness between combinations of terms and connections in the graph, items are identified from one or more combinations of terms. Information about the identified items is presented to the customer.

Abstract: An active metasurface that provides low-loss and high-bandwidth modulation control of light includes a number of cells arranged on a substrate. A controller dynamically alters a voltage differential supplied to the electrodes of each of the cells is adapted to alter refractive index of each of the high-index dielectric blocks in order to controllably steer light exiting the cell.

Abstract: An online concierge system generates an item graph connecting item nodes with attribute nodes of the items. When the online concierge system receives a search query to identify one or more items from a customer, the online concierge system parses the search query into combinations of terms and identifies item nodes and attribute nodes related to the search query. The online concierge system may determine that no item nodes meet presentation criteria. The online concierge system may determine that a reformulated search query has a higher conversion probability than the search query received from the customer. The online concierge system reformulates the search query. The online concierge system selects item nodes as search results. The online concierge system transmits the search results to the customer.

Abstract: A battery pack including a housing at least partially defining an interior volume therein, a docking interface, and a cell pack assembly at least partially positioned within the interior volume. The cell pack assembly includes a plurality of battery cells, where each battery cell includes a body, an anode extending from the body, and a cathode extending from the body, where the cell pack assembly defines cell packing volume in the shape of a rectangular-prism that completely encompasses each body portion of the plurality of cells, and where the cell pack assembly is packaged such that the combined volume of the body portions of each battery cell of the plurality of battery cells occupies no less than 80% of the cell packing volume.

Abstract: An online concierge system generates a graph connecting items with attributes of the items and other items. Hence, the graph includes nodes corresponding to attributes and nodes corresponding to items, with an item connected to attributes of the item in the graph. Example attributes include a brand, a category, a department, or any other suitable information about the item. When the online concierge system receives a search query to identify one or more items from a customer, the online concierge system parses the search query into combinations of terms and compares different combinations of terms to the graph to determine connections between different combinations of terms in the graph. Based on measures of connectedness between combinations of terms and connections in the graph, items are identified from one or more combinations of terms. Information about the identified items is presented to the customer.

Abstract: A system, an electrical combination and a method for powering a load device. The combination may include a burst circuit configured to provide power to the load device to perform a burst operation, the burst circuit including a supercapacitor, a first switch between a power source and the supercapacitor and operable to control whether power is provided from the power source to charge the supercapacitor, and a second switch between the supercapacitor and the load device and operable to control whether power is provided from the supercapacitor to the load device; and an electronic processor configured to control the first switch and the second switch based at least in part on a voltage of the supercapacitor.

Abstract: A power tool comprising a power tool housing, an auxiliary power source, a user input for user control of power tool operation, and a controller. The controller is configured to receive a control signal from the user input, control the power tool in response to the control signal, receive, from a sensor, a signal indicative of an operational characteristic of the power tool, and selectively provide energy from the auxiliary power source to a load of the power tool based on the operational characteristic of the power tool.

Abstract: A system, an electrical combination and a method for powering a load device. The combination may include a burst circuit configured to provide power to the load device to perform a burst operation, the burst circuit including a supercapacitor, a first switch between a power source and the supercapacitor and operable to control whether power is provided from the power source to charge the supercapacitor, and a second switch between the supercapacitor and the load device and operable to control whether power is provided from the supercapacitor to the load device; and an electronic processor configured to control the first switch and the second switch based at least in part on a voltage of the supercapacitor.

Abstract: Disclosed is a relieved weld plate for affixing to a battery core to provide an electrical connection between the battery core and a terminal of a battery. The relieved weld plate includes a conductive face configured for affixing to an electrode of the battery core. The relieved weld plate further includes one or more pathways disposed in the conductive face. The one or more pathways are configured to facilitate at least one of an ingress of a first material into the battery core or an egress of a second material out of the battery core.

Abstract: A power tool comprising a housing, an interface configured to receive a battery pack, a trigger for user control of power tool operation, at least one sensor configured to measure an operational characteristic of the power tool, and a controller. The controller is configured to receive a control signal from the trigger, control the power tool in response to the control signal, receive power tool operational data from the at least one sensor indicative of the operational characteristic of the power tool, and provide additional energy to the power tool via an auxiliary energy supply within the power tool housing based on the operational characteristic of the power tool.

Abstract: A method is provided for tracking funds in a real estate transaction using a real estate transaction portal. Through an interface of a real estate transaction portal, a request is accepted from a pre-registered buyer to transfer funds to a pre-registered beneficiary, the funds being in settlement of at least a portion of a real estate transaction. A corresponding payment request is initiated through a digital payment channel. On receipt of a first automated message through the payment channel, the first automated message is decoded as a confirmation of the initiation of the payment request. In real time, a graphical status indicator is displayed to the pre-registered buyer and the pre-registered beneficiary showing the initiation. On receipt of a second automated message through the payment channel, the second automated message is decoded as a completion of the payment request and the graphical status indicator is accordingly updated in real time.

Abstract: There is provided a lithium ion battery for use in a power tool. The lithium ion battery includes a carbon-based negative electrode containing a certain weight content of silicon-based material, a positive electrode including a lithium metal oxide containing nickel, and a non-flammable electrolyte placed between the negative electrode and the positive electrode. The weight content of silicon-based material in the negative electrode is no less than 5%. A composition of nickel of the lithium metal oxide is no less than the composition of other metals of the lithium metal oxide.

Abstract: Systems and methods which provide lithium-ion battery configurations with high energy density are disclosed. Embodiments provide lithium-ion batteries comprising an anode that includes 30 to 85 wt. % silicon, thereby facilitating high energy density and high N:P ratio for the lithium-ion batteries. The high N:P ratio further enables fast charging and low temperature charging capabilities of the lithium-ion batteries.

Abstract: An online concierge system generates an item graph connecting item nodes with attribute nodes of the items. When the online concierge system receives a search query to identify one or more items from a customer, the online concierge system parses the search query into combinations of terms and identifies item nodes and attribute nodes related to the search query. The online concierge system may determine that no item nodes meet presentation criteria. The online concierge system may determine that a reformulated search query has a higher conversion probability than the search query received from the customer. The online concierge system reformulates the search query. The online concierge system selects item nodes as search results. The online concierge system transmits the search results to the customer.

Abstract: An apparatus includes a charging circuit configured to electrically connect to a plurality of batteries during manufacture of a set of batteries that includes the plurality of batteries. The apparatus further includes a battery bank configured to supply charge to the plurality of batteries during a formation process of each battery of the plurality of batteries and to receive the charge from the plurality of batteries during the formation process. The battery bank has at least one attribute that enables the battery bank to concurrently charge, for each plurality of batteries of the set of batteries, a particular number of batteries based on at least a threshold charging rate and to concurrently discharge, for each plurality of batteries of the set of batteries, the particular number of batteries based on at least a threshold discharging rate.

Abstract: Systems and methods which provide lithium-ion battery configurations with high energy density are disclosed. Embodiments provide lithium-ion batteries comprising an anode that includes 30 to 85 wt. % silicon, thereby facilitating high energy density and high N:P ratio for the lithium-ion batteries. The high N:P ratio further enables fast charging and low temperature charging capabilities of the lithium-ion batteries.

Abstract: An online concierge system generates a graph connecting items with attributes of the items and other items. Hence, the graph includes nodes corresponding to attributes and nodes corresponding to items, with an item connected to attributes of the item in the graph. Example attributes include a brand, a category, a department, or any other suitable information about the item. When the online concierge system receives a search query to identify one or more items from a customer, the online concierge system parses the search query into combinations of terms and compares different combinations of terms to the graph to determine connections between different combinations of terms in the graph. Based on measures of connectedness between combinations of terms and connections in the graph, items are identified from one or more combinations of terms. Information about the identified items is presented to the customer.

Abstract: A system, an electrical combination and a method for powering a load device. The combination may include a burst circuit configured to provide power to the load device to perform a burst operation, the burst circuit including a supercapacitor, a first switch between a power source and the supercapacitor and operable to control whether power is provided from the power source to charge the supercapacitor, and a second switch between the supercapacitor and the load device and operable to control whether power is provided from the supercapacitor to the load device; and an electronic processor configured to control the first switch and the second switch based at least in part on a voltage of the supercapacitor.