In an example, a smart battery backup system is disclosed. The system is configured to be installed on or within a vehicle and connected to a main battery of the vehicle. The system includes a housing, a lithium-ion battery disposed at least partially within the housing, and a controller disposed at least partially within the housing and including a set of momentary switches. The controller is configured to jump start the main battery using the lithium-ion battery. The controller is also configured to maintain the lithium-ion battery such that, based on a charge state of the lithium-ion battery and a charge state of the main battery, the lithium-ion battery is charged using the main battery.

The wearable article (11) comprises a power source (111) and a processor (112). The processor (112) determines whether a power transfer condition is satisfied. In response, the processor (112) is arranged to control the wearable article (11) to transfer power from the power source (111) to an electrical load of an external apparatus. The wearable article (11) may comprise an interface element (114) for forming an electrical connection with the externa apparatus. The wearable article (11) may comprise a power transmitter (113) for beaming electromagnetic energy to the external apparatus. The wearable article (11) may be a garment.

Disclosed is a method and a control circuit. The method includes operating a buffer circuit in a first operating mode or a second operating mode. Operating the buffer circuit in the first operating mode includes buffering, by a first capacitor of the buffer circuit, power provided by a power source and received by a load. Operating the buffer circuit in the second operating mode includes connecting a second capacitor in series with the first capacitor to form a capacitor series circuit, supplying power to the load by the capacitor series circuit, and regulating a first voltage across the capacitor series circuit. Regulating the first voltage includes transferring charge from the first capacitor to the second capacitor.

A vehicle includes: a controller; a power receiving device that contactlessly receives power from a power transmitting facility; a battery chargeable using the power received by the power receiving device; and a power transmitting device that contactlessly outputs, to another vehicle, the power received by the power receiving device. The other vehicle contactlessly receives power from each of the power transmitting facility and the power transmitting device. When the other vehicle is unable to contactlessly receive the power from the power transmitting facility, the controller controls the power transmitting device to contactlessly output the power received by the power receiving device to the other vehicle in accordance with a request from the other vehicle.

A zinc-air charger having a case defining a plurality of pass core vents, and an internal case cavity; a plurality of zinc-air cells that are electrically coupled and disposed within the internal case cavity; a coupling plug configured to couple with and provide electrical power generated by the plurality of zinc-air cells to a device that is separate from the zinc-air charger; and a system configured to: output electrical power generated by the plurality of zinc-air cells to the device; identify a state of the plurality of zinc-air cells, determine, based at least in part on the identified state of the plurality of zinc-air cells, that one or more of the plurality of zinc-air cells are air-starved, and in response to determining that the one or more of the plurality of zinc-air cells are air-starved, generate a power cut-off for a period of time that ceases electrical power output to the device.

A method is provided for controlling a discharge of a battery pack that supplies power to a portable electronic device. The battery pack has one or more cell blocks each having a plurality of battery cells connected in parallel. The method includes the following steps. Determining, for each of the one or more cell blocks, a value of a first supply current flowing through a first battery cell that has the smallest capacity among the plurality of battery cells. Comparing, for each of the one or more cell blocks, the value of the first supply current with a first overcurrent value of the first battery cell to detect overcurrent in the first battery cell. Generating, in response to detecting the overcurrent in the first battery cell of any of the one or more cell blocks, a first overcurrent signal to reduce the power supplied to the portable electronic device.

A charging adapter according to an embodiment comprises: a first battery; and a charging circuit configured to charge the first battery with external power and generate first power, wherein in a fast charging mode, the charging circuit is configured to charge a second battery in an electronic device detachably connected to the charging adapter based on the first power generated and the first battery is configured to generate a second power and charge the second battery with the second power while the charging circuit charges the second battery.

A fast-charging method is provided for rapidly charging an electric vehicle at a light-duty charging site comprising a residential dwelling or a small off-grid power station. The fast charging method incorporates an intermediate battery bank, or power buffer, that stores energy between EV charging cycles, then discharges the stored energy into the EV at a higher rate than the primary electric power source for the charging system. The power buffer thereby acts as a power multiplier that accelerates the rate of charge of an electric vehicle. Substantial power multiplication factors are possible at light-duty charging sites, resulting in large improvements in electric vehicle charging rates. The method may be applied using a number of primary power sources including AC from the utility grid, DC from photovoltaic panels, or power from other electric vehicle chargers (including both AC and DC electric vehicle chargers).

The present invention relates generally to the field of cell phone cases. More specifically, the present invention relates to a cell phone charging case device that is comprised of a body, a rear surface, a storage compartment, a cover and at least one charging cable. The device is also comprised of a detachable storage compartment that is further comprised of a battery and at least one charging cable that may charge external devices other than the cell phone it encases. Thus, the device can be applied to any cell phone, such that a cell phone may be charged without the need for an electrical wall outlet.

A charging rescue system and method for all-electric vehicles comprises: a rescue vehicle APP, a charging rescue vehicle, a rescued vehicle APP, and a rescue platform. The rescue vehicle APP comprises a user module, an order module, a monitoring module, and a communication module. The charging rescue vehicle comprises a controller, a GPS device, a direct current battery charger, an alternating current battery charger, and a measuring module. The rescued vehicle APP comprises a user module, an order module, a payment module, and a communication module. The rescue platform comprises an access module, an order execution module, a vehicle selection module, a rescue vehicle monitoring module, a bill management module, and a user authentication module.