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Battery tester

  • US 9,042,067 B2
  • Filed: 06/25/2013
  • Issued: 05/26/2015
  • Est. Priority Date: 09/29/2012
  • Status: Active Grant
First Claim
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1. A battery tester configured to measure resistance of a battery, comprising:

  • a testing signal circuit;

    a response sensing circuit; and

    a resistance measuring module, wherein;

    the testing signal circuit is configured to conduct a testing signal between the battery tester and a subject battery;

    the response sensing circuit is configured to detect a response signal from the subject battery; and

    the resistance measuring module is electrically coupled to the response sensing circuit and is configured to obtain a measurement of the battery resistance based on the response signal detected by the response sensing circuit,wherein the battery tester further comprises a circuit breaker that is in an off state when the battery tester is not used to measure the battery resistance so as to disconnect the testing signal circuit from the subject battery and to disconnect the resistance measuring module from the response sensing circuit.

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