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Operation method for secondary battery and secondary battery device

  • US 6,674,265 B2
  • Filed: 03/27/2002
  • Issued: 01/06/2004
  • Est. Priority Date: 03/28/2001
  • Status: Expired due to Term
First Claim
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1. An operation method for a secondary battery, in which charge operation and discharge operation are repeated, wherein said charge operation has at least two operation modes including first and second operation modes in which said secondary battery is charged to predetermined charge end voltages different from each other, and either of the two operation modes can be selected according to a control signal from the outside of said secondary battery.

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