Apparatus and method for counteracting self discharge in a storage battery

  • US 7,479,763 B2
  • Filed: 03/18/2004
  • Issued: 01/20/2009
  • Est. Priority Date: 06/22/2001
  • Status: Active Grant
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First Claim
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1. An apparatus for counteracting self discharge in a storage battery, comprising:

  • a charge supply battery configured to provide a supply voltage; and

    a DC-DC converter circuit having an input electrically coupled to the charge supply battery and an output configured to electrically couple to terminals of the storage battery;

    wherein the charge supply battery is of a different type and construction than the storage battery,wherein the charge supply battery has a nominal voltage lower than that of the storage battery,wherein the DC-DC converter circuit is configured to provide a charging voltage at the output having a magnitude greater than a magnitude of the supply voltage, andwherein the charge supply battery provides a charge to the storage battery via the DC-DC converter circuit to increase a life of the storage battery by preventing self discharge of the storage battery.

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