Integrated conductance and load test based electronic battery tester

  • US 6,456,045 B1
  • Filed: 05/30/2001
  • Issued: 09/24/2002
  • Est. Priority Date: 04/16/1999
  • Status: Active Grant
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First Claim
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1. An electronic battery tester for testing a storage battery comprising:

  • a first Kelvin connection configured to electrically couple to a first terminal of the battery;

    a second Kelvin connection configured to electrically couple to a second terminal of the battery;

    a forcing function configured to apply a time varying signal to the battery through the first and second Kelvin connections;

    a load resistance RL configured to couple across the first and second terminals of the battery and draw a relatively large current therethrough; and

    a microprocessor configured to test the storage battery as a function of a dynamic parameter measured through the first and second Kelvin connections in response to applied time varying signal and as a function of a response of the storage battery to the relatively large current drawn through the load resistance.

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