A starting battery for use with an internal combustion engine including an electric starting system with a starter motor is provided. The starting battery includes a battery cell and a control system including a timer and configured to operate a starter motor of an internal combustion engine. The control system is configured to actuate the starter motor to start the internal combustion engine in response to a user input and deactivate the motor after a predetermined amount of time measured by the timer.

A control system can be used for a walk-behind self-propelled machine that includes a handle, a power source, a drive assembly, and an implement selectively driven by the power source. The control system can include a touch sensor located on the handle configured to transmit a contact signal indicative of an operator of the walk-behind self-propelled machine physically contacting the handle at a predetermined location. The system can further include a controller that is in electrical communication with the touch sensor and configured to enable the power source to drive the implement, such as a lawnmower blade, when the controller receives the contact signal.

A control method for a motor of an electric tool includes that: a signal unit feeds back a first state signal when a push handle component is in a working position area and the push handle component is locked relative to a main unit; and the signal unit feeds back a second state signal when the push handle component is in a non-working position area. When receiving the first state signal, a control unit controls a motor to be started according to a first control logic; and when receiving the second state signal, the control unit controls the motor to be started according to a second control logic, where the second control logic is different from the first control logic.

A lawn mower includes a housing (1), a push rod connected with the housing, at least one front wheel mounted in front of the housing, at least one rear wheel mounted at the rear of the housing, a first electric motor driving the front wheel, a second electric motor driving the rear wheel, and a controller electrically connected to the first electric motor and the second electric motor, the controller is configured to turn-on or turn-off the first electric motor and/or the second motor. The lawn mower can be driven in two-wheel drive or four-wheel drive as required, which is convenient to operate and maintain.

A lawn mower includes a housing (1), a push rod connected with the housing, at least one front wheel mounted in front of the housing, at least one rear wheel mounted at the rear of the housing, a first electric motor driving the front wheel, a second electric motor driving the rear wheel, and a controller electrically connected to the first electric motor and the second electric motor, the controller is configured to turn-on or turn-off the first electric motor and/or the second motor. The lawn mower can be driven in two-wheel drive or four-wheel drive as required, which is convenient to operate and maintain.

A turf maintenance apparatus having folding handles facilitating compact storage is presented herein. The folding handles can be compressed or extended to adjust overall length and can rotate between an extended operator position and a folded storage position. Depending on implementation, the folding handles can be locked in the folded storage position and can also lock in the extended operator position. One or more operator presence devices can disable operation of a motor or engine when deactivated. A first operator presence device can deactivate operation of the motor or engine when the folding handles are not locked in the extended operator position, and a second operator presence device can deactivate operation of the motor or engine absent an operator maintaining activation of the second operator presence device.

A riding lawn mower includes a seat, a chassis configured to support the seat, a cutting assembly mounted to the chassis, a walking assembly configured to drive the riding lawn mower to walk on a plane, and a steering wheel assembly. The steering wheel assembly includes a steering wheel operable by the user and a connecting rod configured to connect the steering wheel and the chassis. The steering wheel assembly further includes a pivot assembly that rotatably connects the connecting rod and the chassis, and the pivot assembly enables the steering wheel assembly to switch between a working position and a storage position. A distance between the steering wheel and the plane when the steering wheel assembly is in the storage position is smaller than a distance between the steering wheel and the plane when the steering wheel assembly is in the working position.

A present invention is a power supply device, comprising a battery unit, a heater configured to generate heat on the basis of power of the battery unit, and a driving unit configured to drive the heater with a driving force according to a temperature of the battery unit.

An electric work machine includes a motor, a drive switch, and a controller. The controller is configured to increase a magnitude of a voltage to be applied to the motor, based on the drive switch being turned on. The controller is configured to reduce the increase in the magnitude of the voltage to be applied, based on an actual rotational speed of the motor having reached a rotation threshold that has been set.