ELECTRIC TOOL WITH PROTECTION CONTROLLED BY BATTERY MONITORING

摘要

The invention relates to an electrical appliance provided with a controllable electric motor and to be powered by a rechargeable battery, comprising an electric motor, an electronic switch element for controlling the electric power fed to the electric motor, a control circuit for the electronic switch element and operating means for the control circuit, wherein the appliance is adapted for power supply by a battery provided with a monitoring circuit, wherein the control circuit is adapted to be controlled by the monitoring circuit of a battery connected to the appliance. The invention also relates to a rechargeable battery which is provided with a monitoring circuit, wherein the monitoring circuit is adapted to control the control circuit of the appliance connected to the battery. A separate switch in the battery unit is hereby no longer necessary because the function thereof is taken over by the semiconductor switch controlled by the control circuit of the appliance.