Patent ID: 9748780
Date: 2017-08-29
CPC Classifications: H01M,H02J,Y02E

Claim:
1. An electric power tool system comprising: a tool main body comprising a battery pack interface and a battery charging interface; a battery pack comprising a tool interface that is configured to physically and electrically connect to and disconnect from the battery pack interface of the tool main body, the battery pack further comprising a battery charging interface; and a charger comprising a first output interface and a second output interface, and configured to output charging power from the first and second output interfaces for charging the battery pack, wherein: the first output interface of the charger is configured to physically connect to and disconnect from at least one of the tool main body and the battery pack while the tool interface of the battery pack is physically and electrically connected to the battery pack interface of the tool main body, and the first output interface of the charger is configured to electrically connect to and disconnect from the battery charging interface of the battery pack while the tool interface of the battery pack is physically and electrically connected to the battery pack interface of the tool main body, and the first output interface of the charger is configured to electrically connect to and disconnect from the battery charging interface of the tool main body while the tool interface of the battery pack is physically and electrically connected to the battery pack interface of the tool main body, and the second output interface of the charger is configured to physically and electrically connect to and disconnect from the tool interface of the battery pack while the tool interface of the battery pack is physically and electrically detached from the battery pack interface of the tool main body.