An acquiring method and device of residual energy of a power battery are provided. The acquiring method includes: acquiring an available capacity of a first type of cells and an available capacity of a second type of cells; determining a minimum available capacity as an available capacity of the power battery; determining available energy of the first type of cells according to the available capacity of the power battery, a current temperature, and a quantity of cells of the first type of cells; determining available energy of the second type of cells according to the available capacity of the power battery, a current temperature, and a quantity of cells of the second type of cells; and determining the sum of the available energy of the first type of cells and the available energy of the second type of cells as a quantity of residual energy of the power battery.

A vehicle includes a secondary battery and a display device. The secondary battery is mounted on the vehicle as a power source. The display device is configured to display an indicator that indicates a capacity retention rate of the secondary battery at a current point in time. The capacity retention rate is a ratio of a capacity of the secondary battery at the current point in time to a reference capacity of the secondary battery. The reference capacity is set in advance based on a virtual capacity of the secondary battery after a lapse of a predetermined period from manufacture of the vehicle.

Systems and methods for a lighting device are described. The lighting device can comprise a plurality of headlamps, a rechargeable battery, and a controller. The controller can be configured to perform one or more diagnostic tests.

A method and apparatus for displaying a battery charging-state is disclosed. The method comprises measuring the charged voltage of a battery unit, determining the charging stage of the measured charged voltage, and sequentially and cyclically displaying icons that indicate a charging stage.

A method and system that enhances a service life of a battery is provided. The method includes values of a set of operational characteristics of a plurality of electrochemically active materials of at least one electrode of the battery. The set of operational characteristics include a voltage, a change in accumulated energy, a change in ohmic resistance, and a change in a rate of change in accumulated energy with respect to a rate of change in ohmic resistance. The values are compared with predefined values of the set of operational characteristics. A rate of depletion and a type of depletion of each of the plurality of electrochemically active materials are determined, and a range of the State of Charge, a range of the voltage, and a range of current to operate the battery for enhanced service life are determined.

A method of displaying a residual capacity of a secondary battery causes a computer of a display device to calculate a residual capacity of a secondary battery that stores electric power for driving a motor-driven vehicle based on an estimated value of an open-circuit voltage of the secondary battery storing the residual capacity calculated at the time of stopping of supply of electric power of the secondary battery and displaying the residual capacity at the time of stopping of supply of electric power on a display at the time of starting of supply of electric power of the secondary battery and subsequently displaying the residual capacity of the secondary battery on the display within a range with an upper limit value and a lower limit value with respect to the residual capacity at the time of stopping of supply of electric power.

The present disclosure discloses a charging indication method. The method includes: acquiring a current ratio of a remaining battery capacity to a total battery capacity; determining a target curvature angle of a flexible display screen associated with a terminal based at least on the current ratio; and controlling the flexible display screen to present the target curvature angle.

Methods and system are described for estimating an amount of battery usage for a traction battery of a vehicle. The traction battery usage estimate may be based on or a function of a distance per gallon of gasoline-equivalent so that the usage estimate may be more familiar to vehicle operators. In addition, the traction battery usage estimate may also be based on traction battery current and traction battery voltage.

A method and system for displaying a warning message to warn of insufficient available drive power for use in an electric vehicle, comprising the steps of a detection of measurement values for determining a latest output of an energy storage device of the electric vehicle via a detection unit, a determination of a latest peak output and/or continuous output of the energy storage device on the basis of the detected measurement values via a processing unit, a comparison of the latest peak output and/or continuous output with a threshold value of the peak output and/or continuous output via the processing unit, a display of a warning message by a display when the peak output and/or continuous output falls below the threshold value, wherein the method is not initiated until an attempt is made to establish driving readiness.

An information processing apparatus according to the present technology includes an information acquisition unit and a signal output unit. The information acquisition unit acquires electronic information. The signal output unit outputs a first haptic signal for presenting haptic feedback with respect to an object, the haptic feedback with respect to the object being set corresponding to the acquired electronic information.