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Battery charging apparatus

  • US 5,119,008 A
  • Filed: 03/06/1990
  • Issued: 06/02/1992
  • Est. Priority Date: 03/09/1989
  • Status: Expired due to Fees
First Claim
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1. A battery charging apparatus comprising:

  • a housing;

    at least one first loading means on said housing, for receiving a battery therein, said battery thereby becoming a first-loaded battery;

    at least one second loading means on said housing, for receiving a battery therein, said battery thereby becoming a second-loaded battery;

    first charging means coupled to said at least one first loading means for only charging said first-loaded battery loaded therein;

    second charging means coupled to said at least one second loading means for charging said second-loaded battery loaded therein;

    preferential charging means coupled to said first and second charging means for preferentially charging said first-loaded battery loaded in said first loading means when first and second loading means have batteries loaded therein, such that said first loading means stops charging and said second loading means starts charging when a battery voltage of said first-loaded battery reaches a predetermined level;

    discharging means coupled to said second charging means for discharging said second-loaded battery in said second loading means;

    measuring means coupled to said first and second loading means for measuring capacity of batteries loaded therein;

    control means coupled to said first and second charging means, said preferential charging means, said discharging means, and said measuring means, said control means for controlling the charging and discharging of batteries loaded in said first and second loading means;

    first display means coupled to said measuring means;

    wherein said control means controls said second charging means to charge said second loaded battery to a predetermined level, said discharging means to discharge said second-loaded battery after, charging, said first charging means to charge said first loaded battery while said discharging means discharges said second loaded battery, said measuring means to measure the capacity of the discharged battery, and said display means to display a value related to the measured capacity.

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