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Battery Powered Device

  • US 20080231226A1
  • Filed: 03/23/2007
  • Published: 09/25/2008
  • Est. Priority Date: 03/23/2007
  • Status: Abandoned Application
First Claim
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1. A battery powered apparatus comprising:

  • a rechargeable energy storage device;

    a battery receiving region;

    an appliance that receives energy from the rechargeable energy storage device, wherein the appliance includes a first operating mode and a second, relatively lower power operating mode;

    a circuit that uses energy from a battery received in the battery receiving region to charge the rechargeable energy storage device;

    a state of charge detector that detects a state of charge of the rechargeable energy storage device;

    a mode controller that changes the operating mode of the appliance as a function of the detected state of charge.

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