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REMOTE SENSING OF REMAINING BATTERY CAPACITY USING ON-BATTERY CIRCUITRY

  • US 20140188413A1
  • Filed: 09/30/2013
  • Published: 07/03/2014
  • Est. Priority Date: 12/27/2012
  • Status: Active Grant
First Claim
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1. A method of remote sensing a remaining battery capacity, comprising:

  • charging or discharging a capacitor of an RC circuit to a predetermined threshold voltage using a power source;

    providing a response signal from a communications module to a handheld computing device comprising a reader system once the capacitor reaches the predetermined threshold voltage;

    determining an amount of time taken for the capacitor to charge or discharge to the predetermined threshold voltage using a processor; and

    the processor determining remaining battery capacity information using the amount of time.

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