Abstract: A method includes operating an electric implement to move or cut material in an outdoor environment, wherein operating the electric implement creates acoustic sound and managing the acoustic sound by selecting an operating frequency for the electric implement and controlling an electric motor of the electric implement in accordance with the operating frequency.

Abstract: Disclosed herein is a power tool that includes a direct current power source, motor, and motor controller. In some embodiments, the power source comprises a battery pack configured to supply current at a nominal voltage in excess of 100 VDC. Embodiments of the tool are configured to operate at a high power at least comparable to tools operating at lower voltages, and to produce noise levels in operation that are less than 65 decibels.

Abstract: Embodiments herein describe methods and systems for controlling the power state of a tool. A tool is placed into an active mode upon initial power up, as typically indicated by one or more indicators. The tool is automatically placed into an inactive mode upon the expiration of a timer, if the tool motor was not activated. If the tool is activated, such as by pressing the tool switch, prior to expiration of the timer, the timer resets. A display is provided to signal the user as to the current active status and/or current mode of the tool.

Abstract: Disclosed herein is a power tool that includes a direct current power source, motor, and motor controller. In some embodiments, the power source comprises a battery pack configured to supply current at a nominal voltage in excess of 100 VDC. Embodiments of the tool are configured to operate at a high power at least comparable to tools operating at lower voltages, and to produce noise levels in operation that are less than 65 decibels.

Abstract: Embodiments herein describe an electric powered engine that is self-contained. The engine is configured as a single unit with an adapter plate to match the mounting pattern of a liquid fueled engine equipped to an implement, an output shaft or other power transmission mechanism to match the output shaft or power transmission mechanism of the liquid fueled engine, and/or a cable mount point and associated module to match and translate any control cable inputs of the liquid fueled engine, so that the engine can be directly connected to the implement as a replacement for the liquid fueled engine, without requiring modification of the implement.

Abstract: An electric hand tool that includes an electric motor, an electrical position indicator for operation by a user, and a control unit for controlling power delivery from a power supply to an electric motor, based signals received from the electrical position indicator. The electrical position sensor may be coupled to a trigger operable by a user, and the electrical position sensor may be configured to detect the relative position of the trigger and to only operate in the middle of its possible range. The control unit may determine if the signals received from the electrical position indicator are out of a defined range. If the signals received from the electrical position indicator are out of a defined range, the control unit may register a fault, such as a fully open and/or fully short fault.

Abstract: A electric power tool, comprising a control system electrically coupled to a power supply and a motor to supply current to the motor, where the motor may be coupled to a driven element of a tool so as to drive the driven element. The control system may have a continuous power mode and a boost power mode to supply current to the motor at a greater amount than in continuous power mode, and may be configured to switch between the continuous power mode and the boost power mode based upon a sensed load on the electric motor. In some embodiments, the control system may switch to a cutback power mode to supply current to the motor at a lower amount than in continuous power mode is the load does not decrease before a predetermined time elapses.

Abstract: Embodiments herein describe methods and systems for controlling the power state of a tool. A tool is placed into an active mode upon initial power up, as typically indicated by one or more indicators. The tool is automatically placed into an inactive mode upon the expiration of a timer, if the tool motor was not activated. If the tool is activated, such as by pressing the tool switch, prior to expiration of the timer, the timer resets. A display is provided to signal the user as to the current active status and/or current mode of the tool.

Abstract: A electric power tool, comprising a control system electrically coupled to a power supply and a motor to supply current to the motor, where the motor may be coupled to a driven element of a tool so as to drive the driven element. The control system may have a continuous power mode and a boost power mode to supply current to the motor at a greater amount than in continuous power mode, and may be configured to switch between the continuous power mode and the boost power mode based upon a sensed load on the electric motor. In some embodiments, the control system may switch to a cutback power mode to supply current to the motor at a lower amount than in continuous power mode is the load does not decrease before a predetermined time elapses.

Abstract: An electric hand tool that includes an electric motor, an electrical position indicator for operation by a user, and a control unit for controlling power delivery from a power supply to an electric motor, based signals received from the electrical position indicator. The electrical position sensor may be coupled to a trigger operable by a user, and the electrical position sensor may be configured to detect the relative position of the trigger and to only operate in the middle of its possible range. The control unit may determine if the signals received from the electrical position indicator are out of a defined range. If the signals received from the electrical position indicator are out of a defined range, the control unit may register a fault, such as a fully open and/or fully short fault.

Abstract: Embodiments provide methods, apparatuses, and systems for battery operated tools, such as chainsaws, are provided. In accordance with embodiments herein, a chainsaw may include various components, such as a control board having a controller, a battery terminal block, a motor, a brake switch, a trigger switch, and/or other components. In various embodiments, components of the battery operated tool are provided that improve the capabilities and/or operation of the tool.