Patent ID: 8018198
Filing Date: 2011-09-13
Classification: H01M,H02J,Y02E

Abstract:
1. A battery charging system including a battery charger and a battery pack, the system comprising: a battery charger housing; at least one terminal to electrically connect the battery charger to the battery pack, the battery pack supported by and removably mounted to the battery charger housing, the battery pack including a plurality of lithium-based battery cells, each battery cell of the plurality of battery cells having an individual state of charge; and a controller within the battery charger housing and operable to supply a charging current to the battery pack through the at least one terminal, the controller being operable to control the charging current being supplied to the battery pack based at least in part on the individual state of charge of at least one of the plurality of battery cells, wherein each battery cell of the plurality of battery cells is individually tapped such that the controller is operable to monitor the respective individual state of charge thereof.