Quiescent battery testing method and apparatus

  • US 4,514,694 A
  • Filed: 07/23/1982
  • Issued: 04/30/1985
  • Est. Priority Date: 07/23/1981
  • Status: Expired due to Term
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First Claim
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1. A method for testing a battery which is in a quiescent condition comprising the steps oftaking a first battery terminal voltage measurement, storing said first measurement, taking a second terminal voltage measurement at a subsequent time, and comparing said second measurement with said first measurement to determine the direction of voltage change from said first measurement to said second measurement generating at least one signal indicating the direction of voltage change and providing a visual indication of the direction of voltage change to indicate whether the battery was last subjected to charge or discharge.

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