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Method and apparatus for determining battery type and modifying operating characteristics

  • US 5,164,652 A
  • Filed: 04/21/1989
  • Issued: 11/17/1992
  • Est. Priority Date: 04/21/1989
  • Status: Expired due to Term
First Claim
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1. A battery type detector for determining which type of battery is coupled to a battery powered equipment disposed within a housing and for modifying the battery powered equipment when the battery powered equipment is in a powered on state, comprising:

  • means for producing a predetermined one of a plurality of sense levels corresponding to a battery type, said means for producing said predetermined one of a plurality of sense levels comprises,means for generating a regulated voltage,a first resistive element disposed within the housing of the battery powered equipment, anda second resistive element having a resistance selected in accordance with said battery type and disposed within a housing of the battery, said battery housing having positive, negative, and sense terminals disposed thereon, and said first resistive element coupled between said means for generating a regulated voltage and said sense terminal and said second resistive element coupled between said sense terminal and said negative terminal;

    means, disposed in the housing, for detecting said one of a plurality of sense levels; and

    means, responsive to said means for detecting, for enabling a predetermined operating parameter of the battery powered equipment corresponding to said battery type.

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