Electronic battery tester with automatic compensation for low state-of-charge

  • US 5,585,728 A
  • Filed: 06/29/1995
  • Issued: 12/17/1996
  • Est. Priority Date: 05/01/1992
  • Status: Expired due to Term
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First Claim
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1. An electronic device for assessing the condition of an electrochemical cell or battery having a dynamic conductance and an open-circuit voltage comprising:

  • means operably connected to said cell or battery for detecting said dynamic conductance and for generating a signal proportional thereto;

    means operably connected to said cell or battery for sensing said open-circuit voltage;

    correction means coupled to said means for detecting said dynamic conductance and directly electrically coupled to said means for sensing said open-circuit voltage, said correction means for responding to said open-circuit voltage by adjusting the level of said signal in accordance with said open-circuit voltage; and

    ,means for displaying an assessment of said cell or battery in accordance with the adjusted level of said signal.

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