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Multiple function current-sharing charging system and method

  • US 8,111,039 B2
  • Filed: 10/29/2010
  • Issued: 02/07/2012
  • Est. Priority Date: 04/29/2003
  • Status: Active Grant
First Claim
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1. A method of charging rechargeable power supplies comprising:

  • providing a charging system having at least one universal serial bus (USB) connection and at least one non-USB charging interface;

    providing a first charging current usable to charge a first rechargeable power supply via one of the USB connection and the non-USB charging interface;

    determining an available second charging current based on a difference between the first charging current and a maximum output of the charging system; and

    while continuing to provide the first charging current via one of the USB connection and the non-USB charging interface, providing a second charging current via the other of the USB connection and the non-USB charging interface, the second charging current usable for charging a second rechargeable power supply, the second charging current based on the available second charging current.

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