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Electronic apparatus that determines a characteristic of a battery

  • US 7,417,406 B2
  • Filed: 08/23/2004
  • Issued: 08/26/2008
  • Est. Priority Date: 09/16/2003
  • Status: Expired due to Fees
First Claim
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1. An electronic apparatus which is supplied with electric power from a plurality of batteries connected in series, comprising:

  • detecting means for detecting a first voltage of a sum of the plurality of batteries connected in series and a second voltage of batteries connected in series at any connecting point between the plurality of batteries; and

    determining means for determining a battery type based on the first voltage and the second voltage;

    wherein the determining means includes;

    first determining means for determining whether primary batteries and secondary batteries are mixed in the plurality of batteries when the current load applied to the plurality of batteries is small; and

    second determining means for determining whether a plurality of types of batteries are mixed in the plurality of batteries when the current load applied to the plurality of batteries is large; and

    wherein the determining means determines a remaining capacity of each of the plurality of batteries.

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