Power Supplies

Abstract

Methods, systems, and computer program products determine a battery needs replacement. A power supply utilizes a backup battery to provide backup electrical power. At some point, though, the backup battery becomes inadequate. When the backup battery cannot provide a desired duration of backup operation, an indicator is activated to recommend replacing the backup battery.

1 . A power supply, comprising:
 a processor; and   a machine-readable medium operatively coupled to the processor, the machine-readable medium storing instructions that when executed cause the processor to perform operations, the operations comprising:
 retrieving a full charge duration of backup time available from a battery operating at a full charge in the power supply; 
 retrieving a desired duration of the backup time from the battery when providing backup power; 
 comparing the full charge duration to the desired duration; 
 determining the full charge duration is less than the desired duration; and 
 determining the battery needs replacement in response to the full charge duration being less than the desired duration. 
   
     
     
         2 . The power supply of  claim 1 , wherein the operations further comprise activating an indicator to recommend the replacement of the battery. 
     
     
         3 . The power supply of  claim 1 , wherein the operations further comprise activating a light to indicate the battery needs the replacement. 
     
     
         4 . The power supply of  claim 1 , wherein the operations further comprise processing text for display to indicate the battery needs the replacement. 
     
     
         5 . The power supply of  claim 1 , wherein the operations further comprise receiving an input specifying the desired duration of the backup time. 
     
     
         6 . The power supply of  claim 1 , wherein the operations further comprise measuring the full charge duration of the backup time available from the battery. 
     
     
         7 . The power supply of  claim 1 , wherein the operations further comprise load testing the battery. 
     
     
         8 . A method, comprising:
 retrieving, by a processor, a full charge duration of backup time available from a battery operating in a power supply at a full charge;   retrieving, by the processor, a desired duration of the backup time from the battery when providing backup power;   comparing, by the processor, the full charge duration to the desired duration;   determining, by the processor, the full charge duration is less than the desired duration; and   determining, by the processor, the battery needs replacement in response to the full charge duration being less than the desired duration.   
     
     
         9 . The method of  claim 8 , further comprising receiving an input specifying the desired duration of the backup time. 
     
     
         10 . The method of  claim 8 , further comprising measuring the full charge duration of the backup time available from the battery. 
     
     
         11 . The method of  claim 8 , further comprising activating an indicator to recommend the replacement of the battery. 
     
     
         12 . The method of  claim 8 , further comprising activating a light to indicate the battery needs the replacement. 
     
     
         13 . The method of  claim 8 , further comprising processing text for display to indicate the battery needs the replacement. 
     
     
         14 . The method of  claim 8 , further comprising load testing the battery. 
     
     
         15 . A computer readable medium storing instructions that when executed cause a processor to perform operations, the operations comprising:
 determining a full charge of a battery operating in a power supply;   determining a full charge duration of backup time available from the battery at the full charge;   retrieving a desired duration of the backup time from the battery when providing backup power;   comparing the full charge duration of the backup time to the desired duration of the backup time;   determining the full charge duration of the backup time is less than the desired duration of the backup time; and   determining the battery needs replacement in response to the full charge duration of the backup time being less than the desired duration of the backup time.   
     
     
         16 . The computer readable medium of  claim 15 , wherein the operations further comprise activating an indicator to recommend the replacement of the battery. 
     
     
         17 . The computer readable medium of  claim 15 , wherein the operations further comprise activating a light to indicate the battery needs the replacement. 
     
     
         18 . The computer readable medium of  claim 15 , wherein the operations further comprise processing text for display to indicate the battery needs the replacement. 
     
     
         19 . The computer readable medium of  claim 15 , wherein the operations further comprise receiving an input specifying the desired duration of the backup time. 
     
     
         20 . The computer readable medium of  claim 15 , wherein the operations further comprise measuring the full charge duration of the backup time available from the battery.