BATTERY PACK AND ELECTRICAL DEVICE

In a battery pack and an electrical device, one or more sensors are provided at a battery pack side, and sensor information acquired on a battery side is used to control an electrical device main body. Sensors that collect and output physical information arising due to external factors are provided at a battery pack, and a control part of the battery pack processes signals detected by the sensors and creates a control signal compatible with a mounted electrical device main body. The control part of the battery pack transmits, to the electrical device main body, a signal for controlling the electrical device main body via a communication terminal to enable a control part of the electrical device main body to perform optimal control using sensor information.