An autonomous lawn mower includes removable batteries, one or more electric motors, a cutting blade, one or more wheels, an angle sensor, and a controller. The cutting blade is driven by one of the electric motors. The wheels are driven by one of the electric motors. The controller is configured to allow the lawn mower to perform a grass cutting function at a jobsite without human interaction. The controller is configured to determine whether a roll angle is greater than a first predefined amount using data from the angle sensor. In response to determining the roll angle is greater than the first predefined amount, the controller is configured to stop operation of one of the one or more electric motors configured to provide rotational drive power to the cutting blade.

One apparatus for providing high-resolution CSI feedback includes a processor and a radio transceiver. The processor computes sets of amplitude and phase parameters for one or more channel compression matrices. Here, each channel compression matrix corresponds to one transmission layer of a multiple-layer transmission, where each channel compression matrix is comprised of one or more column vectors. The radio transceiver sends indications of the sets of amplitude and phase parameters to one or more network entities is a mobile communication network.

One apparatus for providing high-resolution CSI feedback includes a processor and a radio transceiver. The processor computes sets of amplitude and phase parameters for one or more matrices corresponding to a CSI codebook. Here, each matrix corresponds to one transmission layer of a multiple-layer transmission, where each matrix is comprised of one or more column vectors. The radio transceiver sends indications of the sets of amplitude and phase parameters to one or more network entities is a mobile communication network.

A system, for cutting a plurality of lawns, including: two or more robotic lawn mowers which each has a rechargeable energy storage, and a carrier, which includes: at least two holders, each of which is capable of retaining one of the two or more robotic lawn mowers, and two or more fences, each fence delineating an individual lawn of the plurality of lawns and configured to be operable while a respective of the two or more robotic lawn mowers is operating at the respective of the plurality of lawns.

A lawncare apparatus includes a main body, multiple wheels supporting the main body, a cutting blade disposed in the main body, a motor driving the cutting blade, and an operating arm connected to the first end of the main body. The distance in the horizontal direction between the axial central line of the cylindrical gripping portion of the operating arm and the axes of the elongated handle of the main body along the length direction is less than 5 cm. Because of the structure mate relationship between the operating arm and the cylindrical gripping portion, the operator feels more comfortable during the transporting process, the volume of lawncare apparatus during transporting is reduced and the convenience of transporting is improved.

A system for providing autonomous lawn care services. The system includes a number of autonomous outdoor power devices, and one or more service vehicles. The one or more service vehicles are configured to selectively load and unload one or more of the autonomous outdoor power devices at a jobsite based on instructions received by a controller of the one or more service vehicles.

Tool holders for transporting implements such as lawn and garden tools, and configured to be attached to a three-point hitch such as a tractor hitch, or a regular hitch, or to receive such as those on an ATV or lawn mower, or the lip of an object such as a wheelbarrow or yard cart, are described. Also described are washers having triangular ears.

A lawncare apparatus includes a main body, multiple wheels supporting the main body, a cutting blade disposed in the main body, a motor driving the cutting blade, and an operating arm connected to the first end of the main body. The distance in the horizontal direction between the axial central line of the cylindrical gripping portion of the operating arm and the axes of the elongated handle of the main body along the length direction is less than 5 cm. Because of the structure mate relationship between the operating arm and the cylindrical gripping portion, the operator feels more comfortable during the transporting process, the volume of lawncare apparatus during transporting is reduced and the convenience of transporting is improved.

The present invention is directed to a trailer for a lawn mower and more particularly to a system and method of charging a variety of batteries of the lawn mower including connecting the lawn mower to a towing vehicle, either directly or by placing the lawn mower on a trailer, towing the lawn mower, generating electricity upon towing the lawn mower utilizing a generator mechanically coupled to the wheels of the trailer. The generator converts the mechanical energy into electrical energy. The generator is electrically coupled to first type of battery and a second type of battery that is connected to the lawn mower and/or a first type of battery and a second type of battery that is connected to a charging station on the trailer. The system also includes a charging circuit for each of the first type of battery and the second type of battery.

A service vehicle for storing and transporting outdoor power equipment includes a loading/unloading ramp, a charging bay configured to charge a rechargeable battery pack mounted on a first piece of outdoor power equipment, a spare battery charging station configured to store and selectively charge a spare rechargeable battery pack, a user interface having a display, and a controller in communication with the user interface and having a processing circuit with a charging module. The controller is configured to receive a charge level of the rechargeable battery pack and the spare rechargeable battery pack from the charging module and instruct the user interface to display the charge levels.