Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries

  • US 6,259,254 B1
  • Filed: 07/26/1999
  • Issued: 07/10/2001
  • Est. Priority Date: 07/27/1998
  • Status: Expired due to Term
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First Claim
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1. In a battery diagnostic system, a method for performing a diagnostic test on a battery to determine if the battery is in a condition acceptable for recharging the battery, the method comprising:

  • automatically determining an instantaneous cranking value for the battery; and

    if the instantaneous cranking value for the battery is determined to be above a predetermined level, automatically performing the further steps of;

    performing a sustained discharge of the battery to generally tax the capacity of the battery;

    determining a loaded cranking value for the battery that generally simulates battery power after multiple cranking attempts; and

    if the loaded cranking value for the battery is above a desired percentage of a rated cranking value for the battery, deeming the battery to be in good condition for charging.

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