Adaptive battery conditioning employs battery chemistry determination to establish how, when and whether to condition a battery. As a result, the conditioning is optimized for the determined battery chemistry. Further, conditioning of a battery that is not conditionable, such as a nonrechargeable
Adaptive battery conditioning employs battery chemistry determination to establish how, when and whether to condition a battery. As a result, the conditioning is optimized for the determined battery chemistry. Further, conditioning of a battery that is not conditionable, such as a nonrechargeable battery, is prevented. A device determines battery chemistry in situ from a measurement of a characteristic of an installed battery, and conditions the installed battery in situ. The device can be a battery-powered consumer electronic device or a battery charging and conditioning system that is independent of an electronic device that uses the conditioned battery. A method of adaptive battery conditioning includes determining a chemistry of a battery from a measurement of a battery characteristic, and conditioning the battery according to the determined battery chemistry.
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What is claimed is: 1. A method of adaptively conditioning a battery comprising: determining a chemistry of the battery from a characteristic of the battery comprising measuring the characteristic under both a battery load condition and a battery unloaded condition; and conditioning the battery acc
What is claimed is: 1. A method of adaptively conditioning a battery comprising: determining a chemistry of the battery from a characteristic of the battery comprising measuring the characteristic under both a battery load condition and a battery unloaded condition; and conditioning the battery according to the determined battery chemistry. 2. The method of claim 1, wherein determining a chemistry further comprises: comparing the measured characteristic to predetermined battery characteristics for a plurality of battery chemistries. 3. The method of claim 1, wherein determining a chemistry further comprises: computing a battery chemistry coefficient from the measured loaded characteristic and the measured unloaded characteristic; and comparing the coefficient to either a set of predetermined battery chemistry coefficients or a set of battery chemistry coefficient ranges for candidate battery chemistries. 4. The method of claim 3, wherein comparing the computed battery chemistry coefficient effectively discriminates between the candidate battery chemistries. 5. The method of claim 1, wherein the measured characteristic of the battery is one or both of a battery voltage and a battery current. 6. The method of claim 1, wherein conditioning the battery facilitates one or both of an establishment of a primary charge capacity for the battery and a maintenance of a charge capacity of the battery. 7. The method of claim 1, wherein conditioning the battery comprises: discharging the battery to an end-of-discharge condition, the end-of-discharge condition being dependent on the determined battery chemistry; and charging the discharged battery. 8. The method of claim 1, further comprising: establishing when and whether to condition the battery. 9. The method of claim 8, wherein establishing when and whether to condition the battery comprises establishing one or both that the battery has reached an end-of-discharge condition and that the battery is about to be recharged. 10. The method of claim 8, wherein establishing when and whether to condition the battery comprises: monitoring energy output from the battery during operational use of the battery; and detecting an energy output from the battery that is indicative of when the battery is to be recharged. 11. The method of claim 8, wherein establishing when and whether to condition the battery comprises: measuring an energy output from the battery during operational use of the battery; comparing the measured energy output to an expected energy output for the battery; and initiating conditioning when the measured energy output is lower than the expected energy output. 12. The method of claim 8, wherein establishing when and whether to condition the battery comprises: measuring a voltage of the battery; comparing the measured battery voltage to an expected voltage for the battery; and initiating battery conditioning when the measured battery voltage is lower than the expected voltage for the battery. 13. The method of claim 8, wherein establishing when and whether to condition the battery comprises: monitoring a voltage of the battery during one or both of battery charging and battery discharging; comparing the monitored battery voltage to an expected voltage for the battery for the one or both of battery charging and battery discharging, respectively; and initiating battery conditioning if the monitored battery voltage fails to reach the expected voltage for the battery. 14. The method of claim 8, wherein establishing when and whether to condition the battery comprises: monitoring one of a voltage or a voltage slope during discharge of the battery; and initiating conditioning if the monitored voltage or the monitored voltage slope exhibits more than one voltage plateau during discharge, at least one plateau being less than another plateau. 15. The method of claim 8, wherein establishing when and whether to condition the battery comprises: measuring a time interval with respect to the battery; and initiating conditioning when the measured time interval is similar to a predetermined time interval, wherein the measured time interval defines one or more of a time period since the battery was last charged, a time period of battery use, and a time period of battery nonuse. 16. The method of claim 1, wherein the battery chemistry is determined one or more of when the battery is replaced in an electronic device, when the battery is installed in the electronic device, during a power-up sequence of the electronic device in which the battery is installed, and when a compartment of the electronic device that encloses the battery is accessed. 17. The method of claim 16, wherein the battery is conditioned more frequently than the battery chemistry is determined. 18. The method of claim 16, wherein when and whether to condition the battery is established before conditioning the battery, when and whether to condition being established more frequently than the battery chemistry is determined, wherein establishing when and whether to condition utilizes the determined battery chemistry to determine whether the battery is rechargeable. 19. A device having in situ battery chemistry-adapted battery conditioning comprising: means for determining a chemistry for a battery installed in the device, the battery chemistry determining means measuring a characteristic of the installed battery under both a battery load condition and a battery unloaded condition to determine the battery chemistry; and means for conditioning the installed battery, the conditioning means adapting to the determined battery chemistry before conditioning. 20. The device of claim 19, wherein the battery chemistry determining means comprises a battery monitor that measures a value of the battery characteristic, the characteristic being one or both of a voltage of the battery and a current of the battery; and means for comparing the measured characteristic value to expected values for corresponding characteristics of a plurality of battery chemistries. 21. The device of claim 19, wherein the battery conditioning means comprises: a load, a switch, and a control circuit, the control circuit controlling the switch to one or both of connect the battery to the load and disconnect the battery from the load, the control circuit adapting to the determined battery chemistry to control the switch. 22. The device of claim 19, wherein the battery conditioning means comprises means for establishing when and whether to condition the battery, the establishing means optionally comprising one or both of means for battery monitoring and a clock, the battery monitoring means measuring one or both of energy output of the battery and voltage of the battery, the clock measuring a time interval with respect to the battery. 23. The device of claim 19, wherein the device further comprises a lock-out mode that prevents either or both of conditioning and recharging of a battery that has a determined nonrechargeable battery chemistry. 24. A battery charging and conditioning system that accepts any one of a plurality of rechargeable battery chemistries comprising: means for determining a battery chemistry of a battery installed in the system, the battery chemistry determining means measuring a characteristic of the installed battery under both a battery load condition and a battery unloaded condition to determine the battery chemistry; and means for conditioning the installed battery, the conditioning means adapting to the determined battery chemistry before conditioning. 25. The battery charging and conditioning system of claim 24, further comprising means for charging the battery. 26. The battery charging and conditioning system of claim 24, wherein the conditioning means comprises means for charging the installed battery and means for discharging the installed battery. 27. An electronic device with in situ adaptive battery conditioning comprising: a battery monitor that measures a characteristic of an installed battery; a power subsystem that powers the electronic device using the installed battery, the power subsystem providing for discharging the battery; a memory subsystem; a controller that controls the battery monitor, the power subsystem, and the memory subsystem; and a computer program stored in the memory subsystem, the computer program having instructions that, when executed by the controller, implement determining a battery chemistry from a characteristic of the installed battery, the characteristic being measured under a battery load condition and a battery unloaded condition, and adaptive conditioning of the installed battery according to the determined battery chemistry, wherein the electronic device accepts any one of a plurality of battery chemistries. 28. The electronic device of claim 27, wherein the instructions that implement determining the battery chemistry comprise instructions that implement using the battery monitor to measure the characteristic of the installed battery under the battery load condition and the battery unloaded condition, and instructions that implement comparing the measured characteristic to predetermined characteristics for the plurality of battery chemistries to determine the chemistry of the installed battery. 29. The electronic device of claim 28, wherein the instructions that implement comparing the measured characteristic comprise instructions that implement computing a battery chemistry coefficient from the measured loaded characteristic and the measured unloaded characteristic, and comparing the coefficient to either a set of predetermined battery chemistry coefficients or a set of battery chemistry coefficient ranges for plurality of battery chemistries. 30. The electronic device of claim 27, wherein the power subsystem comprises: a load, a switch, and a control circuit, the control circuit controlling the switch to one or both of connect and disconnect the battery from the load to condition the battery, wherein control of the switch is adapted to a determined battery chemistry by execution of the instructions that implement the adaptive conditioning. 31. The electronic device of claim 27, wherein the instructions that implement the adaptive battery conditioning further comprise instructions that implement establishing when and whether to condition. 32. The electronic device of claim 31, wherein the instructions that implement establishing when and whether to condition comprise: instructions that implement measuring a value of one or both of an energy output of the battery and a voltage of the battery; instructions that implement comparing the measured value to a respective expected value for the determined battery chemistry; and instructions that implement initiating conditioning if the measured value is lower than the respective expected value, wherein the instructions that implement measuring measure the value during one or more of operational use of the device, battery charging, and battery discharging. 33. The electronic device of claim 31, wherein the instructions that implement establishing when and whether to condition comprise: instructions that either implement monitoring a battery voltage during discharge or implement measuring a time interval; and instructions that implement initiating conditioning when respectively either the monitored voltage exhibits more than one plateau or a predetermined time interval for the determined chemistry is reached. 34. The electronic device of claim 31, wherein the instructions that implement establishing when and whether to condition comprise: instructions that implement measuring a time interval with respect to the battery; and instructions that implement initiating conditioning when the measured time interval is similar to a predetermined time interval, wherein the measured time interval defines one or more of a time period since the battery was last charged, a time period of battery use, and a time period of battery nonuse. 35. The electronic device of claim 27, wherein the computer program further comprises instructions that implement a lock-out mode that prevents either or both of conditioning and recharging the installed battery when the determined chemistry is a nonrechargeable battery chemistry. 36. The electronic device of claim 27, wherein the electronic device is selected from a notebook computer, a laptop computer, a hand-held computer, a personal digital assistant (PDA), a digital camera, a digital video camera, a portable electronic toy, and a cellular telephone. 37. The electronic device of claim 27, wherein the electronic device is a battery charging and conditioning system, the system conditioning and recharging the installed battery when the determined chemistry is a rechargeable battery chemistry, and wherein the computer program further comprises instructions that implement a lock-out mode that prevents either or both of conditioning and recharging of the installed battery when the determined chemistry is a nonrechargeable battery chemistry.
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