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Built-in battery controller for personal telecommunication device

  • US 7,026,790 B2
  • Filed: 12/12/2003
  • Issued: 04/11/2006
  • Est. Priority Date: 12/13/2002
  • Status: Expired due to Fees
First Claim
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1. A battery controller, comprising:

  • a push switch operable to be switched on and off;

    a power switch connected to the push switch and operable to allow a leakage current to flow through the power switch based on input from the push switch;

    a battery pack including a battery and a protection circuit module (PCM) for turning off the battery when the leakage current flows through the power switch; and

    a charging circuit for charging the battery pack.

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