A magnetic tether switch for equipment or vehicles is described. The magnetic tether switch may include a base having a first magnetic assembly. The first magnetic assembly may include a magnet and a first magnetic flux return component, or multiple magnets with reversed polarization directions. The magnetic tether switch may include a cap including a second magnetic assembly. The second magnetic assembly may include a magnet and a magnetic flux return component, or multiple magnets with reversed polarization directions. Alternatively, the second magnetic assembly may be composed of a ferrous material. The base may include a circuit with multiple contacts, where attaching the cap to the base may connect or disconnect the contacts to each other by moving the magnet within the base by magnetic attraction from the cap.

A magnetic tether switch for equipment or vehicles is described. The magnetic tether switch may include a base having a first magnetic assembly. The first magnetic assembly may include a magnet and a first magnetic flux return component, or multiple magnets with reversed polarization directions. The magnetic tether switch may include a cap including a second magnetic assembly. The second magnetic assembly may include a magnet and a magnetic flux return component, or multiple magnets with reversed polarization directions. Alternatively, the second magnetic assembly may be composed of a ferrous material. The base may include a circuit with multiple contacts, where attaching the cap to the base may connect or disconnect the contacts to each other by moving the magnet within the base by magnetic attraction from the cap.

Systems and methods preventing vehicle runaway of an electric powersport vehicle in an emergency situation are provided. One method comprises receiving, via an emergency shutoff switch of the electric powersport vehicle or via a tether switch of the electric powersport vehicle, a signal indicating an existence of the emergency situation while the electric powersport vehicle is in motion, and in response to the signal, attempting to regulate an operation of an electric motor configured to propel the electric powersport vehicle to cause regenerative braking of the electric motor while the electric powersport vehicle is in motion.

An operating device for a human-powered vehicle comprises a base member, an operating member, an accommodating structure, and a second electric power source. The operating member is movably coupled to the base member. The accommodating structure is configured to accommodate a first electric power source. The second electric power source is electrically connected so as to supply electricity to a wireless communicator. The second electric power source is separate from the first electric power source.

An operating device for a human-powered vehicle comprises a base member, an operating member, an accommodating structure, and a second electric power source. The operating member is movably coupled to the base member. The accommodating structure is configured to accommodate a first electric power source. The second electric power source is electrically connected so as to supply electricity to a wireless communicator. The second electric power source is separate from the first electric power source.

A service plug that is attachable to and detachable from a power feed circuit unit is provided with first conductive members and second conductive members, and when the service plug is attached to the power feed circuit unit, the second conductive members become electrically connected to second connection terminals provided in the power feed circuit unit and supply power to an auxiliary load after the first conductive members become electrically connected to first connection terminals provided in the power feed circuit unit and supply power to a drive device.

A recreational vehicle braking system having a tether system, a controller system, and a brake. The controller system activates a slowdown timer upon removal of the tether system from the vehicle and then activates a stop timer upon expiration of the slowdown timer.

An electric vehicle comprises an electric motor for driving a wheel; a main battery for activating the electric motor; a case to which a sub-battery for activating the electric motor is detachably mounted; a connection terminal to which a terminal of the sub-battery is connected; a mounting detecting sensor for detecting that the connection terminal is connected to the terminal of the sub-battery; and a controller which detects the SOCs of the batteries and is configured such that electric power is supplied preferentially from the mounted sub-battery to the electric motor, when the SOC of the sub-battery is equal to or greater than a predetermined value, and electric power is supplied from the main battery to the electric motor, when the SOC of the sub-battery is less than the predetermined value.

An electric vehicle comprises an electric motor for driving a wheel; a main battery for activating the electric motor; a case to which a sub-battery for activating the electric motor is detachably mounted; a connection terminal to which a terminal of the sub-battery is connected; a mounting detecting sensor for detecting that the connection terminal is connected to the terminal of the sub-battery; and a controller which detects the SOCs of the batteries and is configured such that electric power is supplied preferentially from the mounted sub-battery to the electric motor, when the SOC of the sub-battery is equal to or greater than a predetermined value, and electric power is supplied from the main battery to the electric motor, when the SOC of the sub-battery is less than the predetermined value.

A tactical transport cart manually navigable over both topographic and hydrographic terrains has a frame, a payload support on the frame, a hard point of attachment or connection on the frame or the payload support, a pair of wheels or other terrain-engaging transport propulsion members attached to the frame, a handle structure attached to the frame, at least one motor connected in driving relation to the transport propulsion members, a battery for providing motive power to the motor, and a control device connected between the battery and the motor for controlling supply of motive power to the motor. The frame, transport propulsion members and handle structure are cooperatively dimensioned and configured for movement of the cart over ground surfaces of topographic terrains and for partially and fully submerged movement over water-covered surfaces of hydrographic terrains.