Automotive battery charging system tester

  • US 6,351,102 B1
  • Filed: 04/16/1999
  • Issued: 02/26/2002
  • Est. Priority Date: 04/16/1999
  • Status: Active Grant
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First Claim
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1. A charging system tester adapted to be electrically coupled to a battery of a vehicle containing a charging system and an engine, comprising:

  • voltage measurement circuitry adapted to measure a voltage across the battery;

    a microprocessor adapted to obtain voltage measurements from the voltage measurement circuitry during a plurality of conditions including while the engine is running at different speeds and/or different loads are applied to the battery and responsively provided a diagnostic output related to the charging system of the vehicle as a function of the measured voltage and as a function of the plurality of conditions at which the voltages are obtained.

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