Power Tool System and Authorization Method

Abstract: a power tool system includes a cordless power tool with a power tool controller, a power tool memory, a battery pack, a first communication interface, and a second communication interface. the charger is configured to store a shared key or to store a set parameter and to derive a set key from the set parameter. the battery pack is configured to receive the shared key or the set parameter and to store the shared key or to store the set parameter and derive the set key from the set parameter. the power tool is configured to receive the shared key or the set parameter and to store the shared key or to store the set key derived by the power tool controller from the set parameter and/or to store the set parameter and derive the set key by the charger controller from the set parameter.

Inventor(s): Muhammad Salman MALIK, Alfred LUPPER

CPC Classification: H02J7/00038 (Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries)

Search for rejections for patent application number 20250167562