Patent ID: 6522102
Filing Date: 2003-02-18
Classification: H01M,H02J,Y02E

Abstract:
A method of charging at least one battery comprising the following steps:charging at least one battery at a first voltage for a first time duration; charging said at least one battery at a second voltage for a second time duration; determining state of charge of said at least one battery at the end of said second time duration; if said at least one battery is not substantially fully charged at said end of said second time duration, the total charging time is evaluated to determine if said at least one battery has been charged for a time duration greater than or equal to a third time duration, and if said total charging time has not exceeded or is not equal to said third time duration, charging said at least one battery at said first voltage for said first time duration and charging said batteries at said second voltage for said second time duration is repeated; if said at least one battery is substantially fully charged at said end of said second time duration, said at least one battery charging is ceased; or if said total charging time has exceeded or is equal to said third time duration at said end of said second time duration, said at least one battery charging is ceased.