Apparatus and method for predicting battery capacity and fitness for service from a battery dynamic parameter and a recovery voltage differential

  • US 7,545,146 B2
  • Filed: 12/09/2004
  • Issued: 06/09/2009
  • Est. Priority Date: 12/09/2004
  • Status: Active Grant
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First Claim
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1. A method of testing a storage battery, comprising:

  • (a) measuring a dynamic parameter of the battery;

    (b) obtaining an open circuit voltage of the battery;

    (c) measuring a recovery voltage differential of the battery; and

    (d) determining a condition of the battery as a function of the measured battery dynamic parameter, the open circuit voltage, the measured recovery voltage differential and a recovery voltage differential limit, which is a boundary condition for the recovery voltage differential.

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