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System and method for maintenance charging of battery cells

  • US 6,194,874 B1
  • Filed: 09/15/1999
  • Issued: 02/27/2001
  • Est. Priority Date: 03/17/1999
  • Status: Expired due to Term
First Claim
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1. A method for charging a battery, comprising the steps of:

  • (a) charging the battery to a predetermined charge level; and

    (b) applying a first maintenance voltage to the battery for a first predetermined time period, wherein the first maintenance voltage is less than a predetermined reference voltage, and wherein the first predetermined time period is a function of a self-discharge curve associated with the battery.

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