Abstract: A disclosed information handling system is coupled to a power adapter that is coupled to an AC line power source. The system includes an embedded controller storing instructions executable to determine that a trigger condition for limiting electrical power drawn by the system from the power adapter is met and, in response to the determination and in accordance with a low power operating mode, to limit electrical power drawn from the power adapter by the system to an amount less than or equal to the lesser of a power rating of the power adapter and a capacity of the AC line power source to supply electrical power. Limiting the electrical power drawn from the power adapter may include limiting the electrical power consumed by operation of the system or limiting a rate at which an internal battery of the system is charged by electrical power supplied by the power adapter.

Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes may determine a historical discharge rate (dh) from multiple discharge rates a battery of an information handling system (IHS) while the IHS operates on electrical power provided by the battery; receive a current discharge rate (dc) of the battery; determine a full charge capacity correction factor value (Cfcc) associated with the battery; determine a weighting factor (?); determine a difference between a full charge capacity value (FCC) and Cfcc; determine ?·dh; determine (1??)·dc; determine a sum of dh·? and dc·?; determine a quotient value of FCC?Cfcc and ?·dh+(1??)·dc; scale the quotient value based at least on a relative state of charge of the battery to determine an estimated time remaining for the IHS to operate on the electrical power provided by the battery; and display the estimated time remaining.

Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes: may determine that a rechargeable cell of multiple rechargeable cells has reached a top of charge voltage value; in response to determining that the rechargeable cell has reached the top of charge voltage value, may provide an electrical charge current, associated with a charge current value, to the rechargeable cell; may determine a temperature value associated with the rechargeable cell; may determine a charge current termination value based at least on the temperature value; while the charge current value is not at and is not below the charge current termination value: may determine the temperature value associated with the rechargeable cell; and may determine the charge current termination value based at least on the temperature value; and may cease providing the electrical charge current to the rechargeable cell.

Abstract: System and method for battery runtime forecasting, including identifying a power usage of a IHS; identifying a charge profile of a battery of the IHS, the charge profile including charging levels each associated with a respective time period; determining a state of charge of the battery based on a current time; identifying power delivery capabilities of a power source providing power to the battery; generating a predicted relative state of charge (RSOC) profile of the battery based on i) the power usage of the IHS, ii) an entirety of the charge profile of the battery, iii) the state of charge of the battery, and iv) power delivery capabilities of the power source; and identifying a runtime estimate of the battery.

Abstract: Automatically updating a full charge capacity (FCC) of a battery of an information handling system, the method including: determining that the SOC of the battery is less than the SOC threshold; determining that the time since the previous update of the FCC of the battery is greater than the time threshold; identifying configuration parameters for an update of the FCC of the battery; comparing the configuration parameters with current conditions of the battery; based on comparing the configuration parameters with current conditions of the battery, determining that the current conditions of the battery are within bounds of the configuration parameters; and in response to determining that the current conditions of the battery are within the bounds of the configuration parameters, updating the FCC of the battery.

Abstract: A variable power bus (VPB) cable, such as a USB Type-C cable, is validated for actual current capacity with respect to a specified power rating for the cable. The power cable validation is performed when the cable is connected to a power storage adapter and a portable information handling system. The validation includes, prior to negotiating a power delivery contract for electrical power to be supplied to the information handling system from the VPB port via the VPB cable, applying a first voltage to the VPB cable to identify a first indication of a current capacity of the VPB cable; and when the first indication confirms that the current capacity of the VPB cable corresponds to a specified power rating for the VPB cable, enabling the power delivery contract to be negotiated according to the specified power rating, otherwise blocking the power delivery contract using the VPB cable.

Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes: may determine that a rechargeable cell of multiple rechargeable cells has reached a top of charge voltage value; in response to determining that the rechargeable cell has reached the top of charge voltage value, may provide an electrical charge current, associated with a charge current value, to the rechargeable cell; may determine a temperature value associated with the rechargeable cell; may determine a charge current termination value based at least on the temperature value; while the charge current value is not at and is not below the charge current termination value: may determine the temperature value associated with the rechargeable cell; and may determine the charge current termination value based at least on the temperature value; and may cease providing the electrical charge current to the rechargeable cell.

Abstract: A disclosed information handling system is coupled to a power adapter that is coupled to an AC line power source. The system includes an embedded controller storing instructions executable to determine that a trigger condition for limiting electrical power drawn by the system from the power adapter is met and, in response to the determination and in accordance with a low power operating mode, to limit electrical power drawn from the power adapter by the system to an amount less than or equal to the lesser of a power rating of the power adapter and a capacity of the AC line power source to supply electrical power. Limiting the electrical power drawn from the power adapter may include limiting the electrical power consumed by operation of the system or limiting a rate at which an internal battery of the system is charged by electrical power supplied by the power adapter.

Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes may convert first analog signals to first digital values, in which the first analog signals are proportional to current of a battery of an information handling system (IHS); convert the second analog signals to second digital values, in which the second analog signals are proportional to current from a power supply; convert the third analog signals to third digital values, in which the third analog signals are proportional to power consumption of components of the IHS and the battery; and provide a first mean digital value determined from the first digital values, a second mean value determined from the second digital values, and a third mean digital value determined from the third digital values to at least one of IHS firmware, an application, and an operating system.

Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes may determine first multiple impedance values of respective multiple resistors associated with a barrier of an enclosure of a cell of a rechargeable battery that includes multiple cells; determine second multiple impedance values of the respective multiple resistors; determine multiple impedance value changes of the respective multiple resistors based at least on the first multiple impedance values and the second multiple impedance values; determine that at least a portion of the multiple impedance value changes exceed a threshold impedance value change; determine that the cell is compromised based at least on determining that the at least the portion of the multiple impedance value changes exceed the threshold impedance value change; and in response to determining that the cell is compromised, remove the cell from a topology of the rechargeable battery.

Abstract: System and method for battery runtime forecasting, including identifying a power usage of a IHS; identifying a charge profile of a battery of the IHS, the charge profile including charging levels each associated with a respective time period; determining a state of charge of the battery based on a current time; identifying power delivery capabilities of a power source providing power to the battery; generating a predicted relative state of charge (RSOC) profile of the battery based on i) the power usage of the IHS, ii) an entirety of the charge profile of the battery, iii) the state of charge of the battery, and iv) power delivery capabilities of the power source; and identifying a runtime estimate of the battery.

Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes may determine first multiple impedance values of respective multiple resistors associated with a barrier of an enclosure of a cell of a rechargeable battery that includes multiple cells; determine second multiple impedance values of the respective multiple resistors; determine multiple impedance value changes of the respective multiple resistors based at least on the first multiple impedance values and the second multiple impedance values; determine that at least a portion of the multiple impedance value changes exceed a threshold impedance value change; determine that the cell is compromised based at least on determining that the at least the portion of the multiple impedance value changes exceed the threshold impedance value change; and in response to determining that the cell is compromised, remove the cell from a topology of the rechargeable battery.

Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes may convert first analog signals to first digital values, in which the first analog signals are proportional to current of a battery of an information handling system (IHS); convert the second analog signals to second digital values, in which the second analog signals are proportional to current from a power supply; convert the third analog signals to third digital values, in which the third analog signals are proportional to power consumption of components of the IHS and the battery; and provide a first mean digital value determined from the first digital values, a second mean value determined from the second digital values, and a third mean digital value determined from the third digital values to at least one of IHS firmware, an application, and an operating system.

Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes may determine a historical discharge rate (dh) from multiple discharge rates a battery of an information handling system (IHS) while the IHS operates on electrical power provided by the battery; receive a current discharge rate (dc) of the battery; determine a full charge capacity correction factor value (Cfcc) associated with the battery; determine a weighting factor (?); determine a difference between a full charge capacity value (FCC) and Cfcc; determine ?·dh; determine (1??)·dc; determine a sum of dh·? and dc·?; determine a quotient value of FCC?Cfcc and ?·dh+(1??)·dc; scale the quotient value based at least on a relative state of charge of the battery to determine an estimated time remaining for the IHS to operate on the electrical power provided by the battery; and display the estimated time remaining.

Abstract: In one or more embodiments, one or more systems, methods, and/or processes may: charge a battery from a first end of discharge (EOD) voltage to a first voltage; discharge the battery to a second EOD voltage; in response to discharging the battery to the second EOD voltage, withhold power from one or more cells of the battery to at least one component of a system; charge, from the second EOD voltage to a second voltage, greater than the second voltage and less than the first voltage; discharge the battery to a third EOD voltage; in response to discharging the battery to the third EOD voltage, withhold power from the one or more cells to the at least one component; charge, from the third EOD voltage to a third voltage, greater than or equal to the second EOD voltage; and discharge the battery to the first EOD voltage.

Abstract: Dynamic battery discharge at an information handling system during battery charge, such as to support increased power use associated with processor turbo mode, is managed by setting a reduced maximum charge current dynamically during constant voltage charging so that battery voltage droop from discharge does not result in command of an excessive charge current after the discharge.

Abstract: Techniques for power source management in an information handling system (IHS) include detecting connection of multiple power sources to the IHS through respective DC adapters, obtaining data indicating the capabilities of each power source, obtaining data indicating a system load for the IHS, and generating, based on the obtained data, a load management plan specifying a target combined input power amount for power supplied by the multiple power sources and respective amounts of electrical power to be supplied by a single selected power source or by multiple selected power sources. The techniques also include combining the power supplied by each of the selected power sources into a combined input power and supplying the combined input power to the IHS. Prior to the combining, the voltage of the power supplied by a power source may be stepped up or down to a common voltage, or a power source may be de-rated.

Abstract: In one or more embodiments, one or more systems, methods, and/or processes may: charge a battery from a first end of discharge (EOD) voltage to a first voltage; discharge the battery to a second EOD voltage; in response to discharging the battery to the second EOD voltage, withhold power from one or more cells of the battery to at least one component of a system; charge, from the second EOD voltage to a second voltage, greater than the second voltage and less than the first voltage; discharge the battery to a third EOD voltage; in response to discharging the battery to the third EOD voltage, withhold power from the one or more cells to the at least one component; charge, from the third EOD voltage to a third voltage, greater than or equal to the second EOD voltage; and discharge the battery to the first EOD voltage.

Abstract: A power storage adapter for portable information handling systems may include a separate battery and intelligent power management functionality. The power storage adapter may be equipped with fewer voltage regulators and boosted charging for improved efficiency. The power storage adapter may output power to a variable power bus, such as USB Type-C.

Abstract: An information handling system (IHS) includes a battery management unit (BMU) and an embedded controller (EC). The EC is operable for detecting a trigger for monitoring power consumption in light of a first condition, capturing a state of the IHS, writing data representing the state to a power profile log, annotating the log with an identifier of a point at which logging associated with the first condition begins, obtaining, from the BMU, power data representing an amount of current flowing from or charge delivered by a battery, writing at least some power data to the log, detecting a trigger for ending monitoring associated with the first condition, annotating the log with an identifier of a point at which logging associated with the first condition ends, and generating, dependent on the annotations of the identifiers in the log, a power profile report indicating power consumption associated with the first condition.