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System and method of battery capacity reporting

  • US 6,982,544 B2
  • Filed: 09/16/2004
  • Issued: 01/03/2006
  • Est. Priority Date: 07/05/2001
  • Status: Expired due to Term
First Claim
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1. A method for reporting an available capacity of a rechargeable battery, comprising:

  • reporting the available capacity of the rechargeable battery based on a measured battery voltage;

    detecting a change in state of the rechargeable battery between a discharge state and a charge state;

    if the detected state change is from the charge state to the discharge state, then reporting only decreases in the available capacity until another state change is detected; and

    if the detected state change is from the discharge state to the charge state, then reporting only increases in the available capacity until another state change is detected.

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