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Method for detecting a defective charger circuit

  • US 7,538,518 B2
  • Filed: 07/29/2004
  • Issued: 05/26/2009
  • Est. Priority Date: 07/29/2004
  • Status: Active Grant
First Claim
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1. A battery operable to receive a charge from a charger via a pair of terminals, the battery comprising:

  • an analog front end (AFE) coupled to the pair of terminals, the AFE being configured to receive at least one input corresponding to voltage measured across the pair of terminals;

    a battery controller coupled to the AFE by a serial link and operable to communicate using a basic input/output system (BIOS), the battery controller receiving the at least one input via the serial link, the battery controller being placed in a charge_not_received state in response to the voltage being below a selected nonzero value, wherein placing the battery controller in the charge_not_received state is indicative of a charger being defective; and

    a rechargeable cell coupled with the AFE.

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