Electronic battery tester

  • US 6,556,019 B2
  • Filed: 03/19/2002
  • Issued: 04/29/2003
  • Est. Priority Date: 04/30/1999
  • Status: Expired due to Term
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First Claim
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1. An electronic battery tester for determining condition of a storage battery, comprising:

  • a four-point Kelvin connection adapted to electrically couple to terminals of the battery;

    a forcing function having a forcing function output with a time varying component, the forcing function output coupled to a first pair of connections of the Kelvin connection;

    a dynamic response sensor coupled to a second pair of connections of the Kelvin connection configured to provide a sense output relating to a time varying response of the battery to the forcing function;

    digital circuitry coupled to the forcing function and the dynamic response sensor configured to determine condition of the storage battery as a function of a first dynamic parameter and a second dynamic parameter, the first and second dynamic parameters selected from the group of dynamic parameters consisting of conductance, impedance, resistance, admittance and their combination, the first dynamic parameter different than the second.

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