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Battery monitoring system with low power and end-of-life messaging and shutdown

  • US 7,024,321 B1
  • Filed: 07/20/2000
  • Issued: 04/04/2006
  • Est. Priority Date: 07/20/2000
  • Status: Expired due to Term
First Claim
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1. A method of managing a rechargeable battery coupled to one or more power-consuming electrical components, comprising operations of:

  • monitoring a battery charge;

    monitoring a battery charge duration;

    responsive to a low-battery-charge condition, performing needs-charge operations including initiating transmission of a battery-needs-charge message to a remote site and powering-down a first group including at least some of the electrical components;

    responsive to an end-of-battery-capacity condition, performing end-of-capacity operations including powering-down a second group including at least some of the electronic components; and

    determining whether battery charge duration exceeds a predetermined minimum duration, and if not, transmitting a battery-needs-replacement message to the remote site.

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