Abstract: Multiple function current-sharing charging systems aid methods are provided. Where first and second rechargeable power supplies are connected to a charging system, a first charging current is provided to the first rechargeable power supply and a second charging current is provided to the second rechargeable power supply. Upon detection of a predetermined charge level of one of the rechargeable power supplies, a third charging current is provided to the first rechargeable power supply and a fourth charging current is provided to the second rechargeable power supply.
Type:
Grant
Filed:
April 29, 2004
Date of Patent:
December 30, 2008
Assignee:
Research In Motion Limited
Inventors:
Ryan M. Bayne, Felipe O. Simoes, Colin N. Todd