Abstract: A trailer includes a housing including an internal frame and an external frame. The external frame is coupled to the internal frame. In certain embodiments, the internal frame is positioned between interior panels and exterior panels of the housing. In certain embodiments, the external frame is spaced from exterior panels.

Abstract: An interim charging system includes a docking station and a case for a mobile device. The case is magnetically secured to the docking station. The docking station includes a power source and a charger that charges the mobile device in the case.

Abstract: A mobile device includes a drive element, a first battery configured to supply power to the drive element, and a stopping unit stopping supplying of power to the first battery when a voltage of an attachable/detachable second battery configured to supply power to the drive element is greater than or equal to a first voltage for driving the drive element.

Abstract: A two-voltage battery for a vehicle, having at least one ground terminal, a first vehicle electrical system connection at which a low, first vehicle electrical system voltage is provided, and a second vehicle electrical system connection at which a high, second vehicle electrical system voltage is provided. At least one battery submodule having at least two battery cell blocks and a multiplicity of switching elements is provided for connecting the battery cell blocks in parallel and/or in series as desired. In a first connection arrangement, the same are connected in parallel with one another such that the first vehicle electrical system voltage is provided at the first vehicle electrical system connection. The switching elements in a second connection arrangement connect the battery cell blocks in series with one another such that the second vehicle electrical system voltage is provided at the second vehicle electrical system connection.

Abstract: A secondary on-board network battery for a secondary on-board network that is redundant to a primary on-board network of a motor vehicle, includes: a battery cell composite for providing electrical energy; a first connection for electrically connecting the secondary on-board network battery to at least one secondary on-board network component; a second connection for electrically connecting the secondary on-board network battery to the primary on-board network; a first switching device between the first connection and a connection point that is electrically connected to the battery cell composite; a second switching device between the second connection and the connection point, and a control unit configured to provide a conducting state for both switching devices for supplying the at least one secondary on-board network component from the primary on-board network, and for providing a locking state for the second switching device for keeping an overload on the primary on-board network side away.

Abstract: A battery charger includes a battery power regulator configured to set a charge signal provided to a battery based on a charge control signal and charge enable signal. The battery charger also includes a controller configured to provide the charge control signal to the battery power regulator. The controller is also configured to temporarily de-assert the charge enable signal for a predetermined amount of time in response to determining that a change is needed in the charge control signal. The controller is further configured to re-assert the charge enable signal after the predetermined amount of time.

Abstract: Systems and methods for removing charge buildup/leakage from solar modules. A discharge controller may be coupled between a solar module and a string bus of a solar array. The discharge controller is configured to disconnect the solar module from the string bus, and to connect a grounded frame to solar cells of the solar module. Since the grounded frame of the solar module is grounded, connecting the grounded frame and the solar cells allows charge buildup/leakage to discharge into ground.

Abstract: My invention is a solar panel rack mounted to 2 longitudinal rails on the roof of a motor vehicle that allows easy slide mounting and removal of the solar panels and rack, without having to climb onto the roof of the motor vehicle and without drilling fastener holes in the solar panels, longitudinal rails, or motor vehicle roof.

Abstract: A fuel cell system includes a power supply circuit that supplies electric power from a fuel cell and a secondary battery to the load and charges the secondary battery with electric power from the fuel cell. A decision value acquirer monitors a charge-discharge state of the secondary battery and obtains a decision value that is used to determine a degree of localization of an ion concentration in an electrolytic solution in the secondary battery. When the decision value becomes equal to or greater than a predetermined reference value, a controller limits discharge of the secondary battery. When the decision value is equal to or greater than the reference value and the required power decreases, the controller limits a decrease in output power of the fuel cell and causes the secondary battery to be charged with the electric power corresponding to the limitation imposed on the decrease in output power.

Abstract: Various embodiments relate to digital demodulation for wireless power transmission. A wireless power transmitter includes a transmitter coil and a controller. The transmitter coil is configured to wirelessly couple to a receiver coil of a wireless power receiver to transfer power to the wireless power receiver responsive to a coil current applied to the transmitter coil. The wireless power receiver is configured to modulate at least one electrical condition of the wireless power receiver to modulate the coil current at the transmitter coil. The controller is configured to sample one or more electrical signals of the wireless power transmitter, and digitally demodulate the sampled one or more electrical signals to obtain a communication received from the wireless receiver responsive to the modulation of the at least one electrical condition of the wireless power receiver.

Abstract: A carry case for an electronics-enabled eyewear device, such as smart glasses, has charging contacts that are movable relative to a storage chamber in which the eyewear device is receivable. The charging contacts are connected to a battery carried by the case for charging the eyewear device via contact coupling of the charging contacts to corresponding contact formations on an exterior of the eyewear device. The charging contacts are in some instances mounted on respective flexible walls defining opposite extremities of the storage chamber. The contact formations on the eyewear device are in some instances provided by hinge assemblies that couple respective temples to a frame of the eyewear device.

Abstract: A temperature detection circuit is provided with a temperature measuring circuit, a computing circuit, a temperature monitoring circuit, and a diagnostic signal generation circuit. The temperature measuring circuit outputs, to a measurement node, a temperature measurement voltage corresponding to a temperature. The computing circuit, calculates the temperature on the basis of the temperature measurement voltage. In the cases where the temperature measurement voltage is within a predetermined abnormal voltage range, the temperature monitoring circuit validates an abnormality detection signal indicating a temperature abnormality. When fault diagnosis of the temperature monitoring circuit is carried out, the diagnostic signal generation circuit supplies a diagnostic signal to the measurement node, and changes the temperature measurement voltage.

Abstract: This disclosure details exemplary home energy storage systems capable of storing electricity locally for later consumption, such as for charging an electrified vehicle, supporting various home energy needs, and supporting alternative energy storage/power source functionality. An exemplary home energy storage system may include a stationary unit, one or more modular units removably connectable to the stationary unit, and a rack mounting and handcart transportation system configured to mount, detach, and transport the modular unit relative to the stationary unit. Once undocked from the stationary unit, the modular unit(s) may be utilized as a portable power source for powering one or more electrical loads. This disclosure further describes various interconnected functionalities (e.g., electrical and wireless communication of state of uses) between the stationary unit and the modular unit of home energy storage systems and between the modular unit and various satellite equipment associated with the modular unit.

Abstract: A vehicular charging control system using a solar panel includes: a first battery; a calculation unit that calculates a chargeable electric power amount (an amount of electric power with which the first battery can be charged until the SOC of the first battery reaches a predetermined value); a determination unit that determines whether regenerative electric power is being generated; and a control unit that controls charging of the first battery with electric power generated by the solar panel. The control unit allows the first battery to be charged with the electric power generated by the solar panel up to an upper limit set to the chargeable electric power amount when regenerative electric power is not being generated, and up to an upper limit set to an electric power amount obtained by subtracting the regenerative electric power amount from the chargeable electric power amount when regenerative electric power is being generated.

Abstract: An output performance diagnosis apparatus for a fuel cell acquires, in a case where determination is made that a representative value of impedance of the fuel cell acquired during a trip of a vehicle traveling with a fuel cell as a power source is equal to or less than an impedance threshold, during the trip in which the impedance is acquired, a current-voltage characteristic of the fuel cell based on a change of an output voltage of the fuel cell after a period in which the output voltage of the fuel cell is maintained in a range equal to or higher than a lower limit voltage and equal to or lower than a voltage threshold higher than the lower limit voltage over a predetermined period or more, and calculates maximum output electric power of the fuel cell based on the acquired current-voltage characteristic.

Abstract: The invention discloses a photovoltaic inverter system and a method for controlling the same. The photovoltaic inverter system comprises: an optimizing module string and an inverter, wherein the optimizing module string comprises a plurality of optimizing modules each having an input port coupled to at least one photovoltaic module, output ports of the plurality of optimizing modules are connected in series, each of the optimizing modules comprises a control unit, an input port of the inverter is coupled to an output port of the optimizing module string, the inverter comprises an auxiliary detection module for auxiliary detecting an output current of the optimizing module string, and the control unit controls an output voltage of the optimizing module string based on the output current of the optimizing module string, such that the output voltage satisfies a start-up condition of the inverter.

Abstract: A wireless power transmitter according to various embodiments comprises: a power transmission antenna array capable of transmitting power in a wireless manner; a driving circuit for mechanically adjusting the steering direction of the power transmission antenna array; and a processor, wherein the processor can be configured so as to determine the direction in which an electronic device is positioned, control the driving circuit such that the driving circuit mechanically adjusts the steering direction of the power transmission antenna array when the direction in which the electronic device is positioned is not included in a coverage corresponding to the steering direction of the power transmission antenna array, and control the power transmission antenna array such that the power transmission antenna array transmits the power to the electronic device.

Abstract: Embodiments herein provide a system and method for controlling extraction of power from multiple Photo Voltaic (PV) arrays. At least two converters and at least two Photo Voltaic (PV) arrays are configured. The power extraction is controlled through one of an injection of Direct Current (Idc) into output current of each of the at least two converters, or by performing a phase shifting of each of the output current of each of the at least two converters.

Abstract: A power system includes: a storage battery; a water electrolyzer; a fuel cell that generates electricity using hydrogen supplied from a hydrogen reservoir that stores hydrogen generated by the water electrolyzer; a detector that detects whether there is a person in a building; and a controller that performs at least one of first control and second control. The first control determines a priority between the storage battery and the water electrolyzer, to which electric power is supplied from a power generation device using renewable energy, based on information detected by the detector. The second control determines a priority between the storage battery and the fuel cell, from which electric power is supplied to a power load provided in the building, based on the information detected by the detector.

Abstract: Disclosed is an apparatus for a solar power generator as it relates to a portable and expandable solar power generator that can form a micro-grid power system comprising any elements described, either individually or in combination with any other elements, in any order.

Abstract: A method and apparatus for a power distribution system, includes providing, from a power source having a set of dischargeable power storage devices connected by way of selectable connections, a power supply to a voltage output, and switchably connecting the voltage output to a set of power outputs having different electrical characteristics.

Abstract: Techniques are described herein for enabling, among other features, more effective wireless charging of devices in wireless power delivery environments through enhanced signal focusing over multiple paths in a multipath wireless power delivery environment. More specifically, the systems and methods discussed herein describe techniques for increasing effective charging of devices, including enhanced ability to focus charging utilizing multiple pathways, phase detection of incoming signals allowing for movement detection in a wireless environment, phase synchronization, and directional arrays.

Abstract: A protection circuit includes: a high-side switch connected to a power terminal to which a predetermined power supply voltage VBB is supplied from an onboard battery; and an NMOS transistor MT1 connected to the high-side switch and configured to prevent an electrical conduction to the high-side switch when the onboard battery is reverse-connected to the power terminal, wherein a semiconductor integrated circuit is protected from a breakdown due to the reverse connection of the external power supply. A semiconductor integrated circuit apparatus includes the above-mentioned protection circuit configured to protect a semiconductor integrated circuit connected between the power terminal and the ground terminal, from an electro-static discharge breakdown. The protection circuit is connected to the clamp circuit unit inserted between the power terminal and the ground terminal, and is configured to protect the clamp circuit unit from a breakdown when the external power supply is reverse-connected.

Abstract: Apparatus, systems and methods for determining a geo-location are provided. The apparatus comprises a receiver, a sensor, a processor, and a transmitter. The receiver is configured to receive a first geo-location. The sensor is configured to determine a change in a pose of the apparatus. The processor is operatively coupled to memory, the receiver, and the sensor. The processor is configured to determine a second geo-location based on the first geo-location and the sensor utilizing a neural network. The first transmitter is configured to output the second geo-location of the apparatus.

Abstract: This disclosure generally relates to an energy generation system. In one embodiment, the energy generation system comprises a plurality of solar panels that are connected in a series electrical connection. The energy generation system further includes a short-string optimizer which outputs direct current electricity to a direct current bus.

Abstract: The invention relates to an autonomous and movable device (1) for generating, storing and distributing electrical power, comprising means (2) for generating electrical power, namely photovoltaic panels (20), resting on at least one supporting element (3), namely a standardized shipping container (3 qql, 32). The latter encloses internal means (6) for storing the electrical power generated by said generating means (2), said supporting element (3) also enclosing means for converting signals generated by the generating means (2) into signals suitable for supplying power to the storing means, and at least one electrical connector (8) for connecting external power-storing devices.

Abstract: A power flow schedule of a cluster is determined by calculating sensitivity of the net power exchange bounds. Each cluster includes a different section of the power system. The cluster provides to another cluster the power flow schedule and the net power exchange bounds for determination of a second power flow schedule by another cluster based on collective net power exchange bounds, a forecast power supply of the plurality of clusters, and a forecast power demand schedule. The clusters are hierarchically arranged such that the another cluster is higher in a hierarchy than the cluster. The cluster receives from the another cluster the second power flow schedule. The first power flow schedule is adjusted locally within the cluster based on the second power schedule and the net power exchange bounds of the cluster. The power output of the cluster is controlled using the adjusted first power flow schedule.

Abstract: A rail transit braking energy recovery system. The rail transit braking energy recovery system comprises a braking motor, a fuel battery, an electrolytic bath, and a hydrogen tank. The braking motor is used for converting braking energy of the rail transit into electric energy. An output end of the braking motor is connected to a power input end of the electrolytic bath. The electrolytic bath comprises a hydrogen output end and an oxygen output end, the hydrogen output end is connected to the hydrogen tank, and the hydrogen tank is connected to the fuel battery and is used for supplying hydrogen to the fuel battery. In the system, only the electrolytic bath is structurally added, and the existing vehicle-mounted hydrogen tank is directly used for storing hydrogen, therefore the structure is simple, the self weight of the vehicle body is reduced, the energy conversion efficiency is high, and at the same time, the injection of hydrogen is reduced and the operation cost is reduced.

Abstract: The present invention provides a technique capable of satisfying both the restoration of an output voltage of a fuel cell and an improvement of electric power responsiveness in a fuel cell system in a situation in which its operation status is restored to a normal operation from an operation having low power generation efficiency. A controller updates a lower limit voltage threshold in accordance with the restoration of an FC voltage until the operation status is restored to a normal operation from an operation having low power generation efficiency, such as an intermittent operation and a warmup operation (step S1). The controller increases an FC current in accordance with the updated lower limit voltage threshold (steps S2 and S3) to thereby satisfy both the requirements of the restoration of the output voltage of the fuel cell stack and the improvement of the electric power responsiveness.

Abstract: Systems and methods regarding distributed energy resource systems (DERs) are described. Configurations and employed methods may include sending a command to a DER system to place the DER system in one or more of a charge state, a discharge state, an idle state, or a reactive power state. These DER systems may include an energy storage circuit, a dc/ac converter configured to receive a DC voltage from the storage circuit and convert the received DC voltage for receipt by an external AC circuit, and one or more controllers configured to designate operation state of the storage circuit in at least a charge state, a discharge state, and an idle state.

Abstract: A system for distributing locally generated energy from at least one renewable DC source to a plurality of local load units of the system, including, for each load unit: an input terminal configured to connect to a grid, and an output terminal configured to connect to at least one load. Further for each load the system includes an inverter including an inverter input and an inverter output, wherein the inverter input is connected to the at least one renewable DC source and the inverter output is connected to the input terminal and to the output terminal of the respective load unit, and wherein the inverter is configured to convert a direct current at the inverter input into an alternating current at the inverter output.

Abstract: This invention consists of an apparatus to interface an electric vehicle battery with a solar photovoltaic system and a method of using the apparatus to provide back up power during grid outages and ancillary service revenue from the grid. The apparatus uses the solar PV inverter to provide bidirectional power flow from the battery during night-time hours, or whenever the solar array is producing insufficient power. The apparatus thus consists only of switches and control and measurement equipment. It relies on the otherwise underutilized inverter and the on-board vehicle battery charger as the power electronic components.

Abstract: An electricity storage system includes a main body and a portable unit. The main body includes a casing, a first storage battery module that stores power, and a first terminal unit to supply the power. The portable unit includes a second terminal unit and a second storage battery module, and is attachable to and detachable from the first terminal unit. The second terminal unit is electrically connectable to the first terminal unit and receives the power supplied from the main body. The second storage battery module has a storage capacity less than the first storage battery module. The portable unit further includes a charging controller, upon determination of power supply from the system power supply has been stopped, the charging controller controls a charging rate for the second storage battery module to be charged at least one of a normal mode and a high-speed mode.

Abstract: An information displaying method and a terminal are provided. The method includes: obtaining audio data to be played in a chronological order; determining, based on attribute information at any moment of a sound represented by the audio data, a shape of a graph corresponding to the any moment, where the graph corresponding to the any moment including a closed curve with a bump, and a maximum distance in distances from points on the bump to a center of the graph is positively correlated to a value indicated by the attribute information at the any moment; and displaying the graph corresponding to the any moment. The bump in the graph changes with the value indicated by the attribute information of the sound, and such graph is presented to a user, to enhance perception of the user on the attribute information of the audio data and improve user experience.

Abstract: A vehicle having wheels for riding the vehicle over a carrier such as a road or rails, said vehicle having a battery and a generator connected thereto, said generator being arranged to generate electrical power for charging said battery, said generator being further mechanically connected to at least one of said wheels such that said wheel drives the rotor of said generator, characterized in that said generator is an asynchronous generator or a permanent magnet generator, wherein an AC/DC inverter/charger is connected between said generator and said battery for regulating the current and the voltage of the charging power to said battery.

Abstract: A power supply and distribution device for solar-powered aircraft includes at least two power supply and distribution sub-systems having same configurations. A disconnection of an electrical connection between a plurality of components of each power supply and distribution sub-system can be controlled through a first switch. An electrical connection between the same components of the power supply and distribution sub-systems can be established by controlling a second switch. The power supply and distribution device for solar-powered aircraft has a centralized-distribution design. Specifically, each power supply and distribution sub-system is designed in a centralized mounting manner and has separated power supply and power distribution functions that can work separately.

Abstract: Disclosed are an energy self-contained oceanic drone for AI-based marine information survey and surveillance and a method using the same. A method of monitoring, by a marine vessel system, an ocean condition may include taking in a given amount of seawater or fresh water, performing advanced water treatment on the taken-in seawater or fresh water, performing water electrolysis treatment on the water obtained through the advanced water treatment, generating electric energy using a fuel cell based on hydrogen obtained from the water through the water electrolysis treatment, and supplying the generated electric energy as electric power for the marine vessel system.

Abstract: Disclosed is a bus stop using a large-scale perovskite solar cell in which a perovskite solar cell is prepared using a hybrid structure including a graphene-carbon nanotube. The bus stop includes a body unit fixed to the ground to maintain the overall shape, a solar cell unit for producing electrical energy from sunlight, and an energy storage system (ESS) for storing the electrical energy produced by the solar cell part.

Abstract: An energy storage system includes a first energy storage device having a first energy storage chemistry, a second energy storage device having a second energy storage chemistry different than the first energy storage chemistry, and a link device. The link device is configured to facilitate electrically coupling the second energy storage device to the first energy storage device, regulate a first power profile of first power provided by the first energy storage device to the second energy storage device such that the first energy storage device can selectively charge the second energy storage device, and regulate a second power profile of second power provided by the second energy storage device to the first energy storage device such that the first energy storage device can selectively draw power from the second energy storage device to increase a power capacity thereof.

Abstract: A photovoltaic (PV) energy storage system having a plurality of hybrid cells operable to generate DC electrical power. Each hybrid cell includes at least one solar power generation unit and a power storage device connected in parallel. The power storage devices of the plurality of hybrid cells are connected in series and the DC electrical power derived from the series of these power storage devices energizes a DC power load. The PV energy storage system has an inverter operable to convert DC electrical power into AC electrical power and is electrically coupled to the series of the power storage devices. The PV energy storage system energizes an AC power load, such as a power grid.

Abstract: A system for using the Earth's magnetic field to provide supplemental power to a machine having a motor, the system comprising: a computer; a water wire; and an energy storing device; the computer being in electrical communication with the water wire and the energy storing device; the water wire comprising: a tube having a length and an inner diameter; a pair of conductive pins attached at each end of the tube; and a water solution having a conductive solute, the water solution being provided within the tube such that to contact the pair of conductive pins; wherein the water wire can collect electrical energy from the Earth's magnetic field when the machine is put in motion by a power source powering the motor; and wherein the collected electrical energy is stored in the energy storing device or used to provide the supplemental power to the machine or other machine components.

Abstract: A renewable energy generation and storage system forms a current control loop for controlling a current charge operation and a current discharge operation to a plurality of energy storage cells at the same time. As a result, renewable energy from multiple sources may be stored while providing output voltage to a load, and therefore the renewable energy generation and storage system of the present invention may achieve energy generation and storage at the same time.

Abstract: A portable solar power management system includes (i) a solar panel interface to one or more solar panels, (ii) an energy storage interface to one or more energy storage devices, (iii) a charging circuit which routes the electrical currents from the solar panels to the energy storage devices; (iv) a load interface to one or more load devices, the load devices being powered independently on primary and secondary load circuits; and (v) a controller for controlling the operations of solar panel interface, the energy storage interface, the charging circuit, and the load interface. In addition, a secondary load control circuit and a programmable controller may be provided which route the electrical currents from the energy storage devices to the load interface, wherein the programmable controller, based on the sensing signals, also activates and deactivates the secondary load circuit.

Abstract: The present invention provides a high-voltage detection circuit, detector, battery device and vehicle, the high-voltage detection circuit includes: a controller including a first signal input port, a second signal input port, and a signal output port; a current detection sub-circuit for sampling a current signal of internal side of a main negative switch and for transmitting the current signal to the first signal input port; a switch detection sub-circuit, a first end of the switch detection sub-circuit being configured to sample a first electric signal of external side of a to-be-detected switch, and a second end of the switch detection sub-circuit being configured to transmit the first electric signal to the second signal input port; and a switch driving sub-circuit, configured for sampling a switch control signal via the signal output port and generating a switch driving signal according to the switch control signal.

Abstract: A system for charging electric vehicles (EVs) includes at least one transportable battery-energy-storage DC systems (BESDCS), at least one renewable direct-current (DC) power supply station at a first location. The system also includes at least one DC charging station for charging of the at least one EV at a second location different from the first location. The system further includes at least one electric tanker transport comprising at least one electric truck vehicle configured to be coupled to the at least one BESDCS. The electric tanker transport is configured to transport the at least one BESDCS from the first location to the second location for charging of the at least one EV and transport the at least one BESDCS from the second location to the first location for charging the at least one BESDCS from renewable DC power supply station.

Abstract: A self-powered module for gesture recognition is presented that utilizes small, low-cost photodiodes for both energy harvesting and gesture sensing. Operating in the photovoltaic mode, photodiodes harvest energy from ambient light. In the meantime, the instantaneously harvested power from individual photodiodes is monitored and exploited as a clue for sensing finger gestures in proximity. Harvested power from all photodiodes is aggregated to drive the whole gesture-recognition module including a micro-controller running the recognition algorithm. A robust, lightweight algorithm is provided to recognize finger gestures in the presence of ambient light fluctuations. Two prototypes are fabricated to facilitate user's interaction with smart glasses and smart watches.

Abstract: A control method for a fuel cell system including a solid oxide fuel cell, an anode gas and a cathode gas being supplied to the fuel cell, the fuel cell performing electric generation corresponding to a load, the fuel cell system controlling gas supply to the fuel cell and the electric generation. The control method including: an electric generating operation step of controlling flow rates of the anode gas and the cathode gas that flow into the fuel cell depending on a magnitude of the load; and a self-sustained operation step of causing the fuel cell to perform self-sustained operation when the load is equal to or less than a predetermined value. The self-sustained operation step includes a gas supply step of supplying the anode gas with a predetermined flow rate and the cathode gas with a predetermined flow rate to the fuel cell.

Abstract: A process for starting a PEM fuel cell module includes blowing air through the cathode side of the module using external power. An amount hydrogen is released into the anode side of the module under a pressure greater than the pressure of the air on the cathode side, while the anode is otherwise closed. Cell voltages in the module are monitored for the appearance of a charged state sufficient to start the module. When the charged state is observed, the module is converted to a running state.

Abstract: A vehicle for supplying solar charging panel generated power to a high-voltage battery or an auxiliary battery based on a SOC is provided. The vehicle includes a motor, an electric field load, a high-voltage battery that supplies power to the motor, and an auxiliary battery that supplies the power to the electric field load. A battery sensor measures a SOC of each battery. A solar charging panel measures an amount of solar light and generates the power based on solar energy. A controller calculates generable power through the solar charging panel based on the measured amount of light when starting of the vehicle is off. The solar charging panel is operated to generate power when the generable power is greater than the power consumption in the power generation through the solar charging panel, and supplies the generated power to one of the batteries based on the SOC of each.

Abstract: A sheath for convenient charging having a left side, a right side and a top side, a first closed end, a second open end and a surrounding bottom portion surrounding at least a portion of the sides and ends of the sheath. At least a portion of the sheath extends above an outer surface of a body, wherein the body has an inner surface, an outer surface and an opening between the inner surface and the outer surface. The sheath is at the opening and the sheath receives a female end of a USB cable having four sides, an operative end, a cord end and a cord.