A battery booster for jumpstarting a vehicle having an external battery. The battery booster may include a processor, a set of terminal connectors, a power supply, and a power-management circuit. The set of terminal connectors may be configured to couple with the external battery or an engine that is electrically coupled with the external battery. The power supply may include a lithium battery configured to supply a starting current to jump start an engine. The external battery may have a first nominal voltage, while the lithium battery may have a second nominal voltage that is greater than the first nominal voltage. The power-management circuit operatively coupled with the at least one processor, wherein the at least one processor is configured to transfer power selectively between the external battery and the power supply. The processor is configured to perform a pre-charge function and/or a back-feed function via the power-management circuit, which may employ a pulse width modulation (PWM) driver.

An internal combustion engine includes an engine block including a cylinder, a piston positioned within the cylinder and configured to reciprocate within the cylinder, a crankshaft driven by the piston, a fuel system for supplying an air-fuel mixture to the cylinder, a starter motor configured to initiate rotation of the crankshaft to start the engine, a cover having a vent opening, a blower housing located between the cover and the engine block for directing cooling air toward the engine block, wherein the blower housing comprises a receptacle electrically coupled to the starter motor, a fan configured to draw the cooling air into the blower housing through the vent opening in the cover to cool the engine block, and a rechargeable battery pack removably attached to the receptacle, wherein the rechargeable battery pack is configured to power the starter motor to start the engine.

A pull start assist device may include a frame with a base and a longitudinal member. The longitudinal member may include a first pivot axis and a second pivot axis displaced from the first pivot axis. The device may also include a pedal arm with a pedal on a first end and a second end pivotally coupled to the first pivot axis of the longitudinal member. A swing arm may be provided with a handle receiver on a first end and a second end pivotally coupled to the second pivot axis of the longitudinal member. A connection link maybe used to connect the swing arm and the pedal arm, whereby a pull start handle of a powered tool may be supported by the handle receiver and the pedal displaced by the foot of a user, actuating the swing arm and starting the powered tool.

A pull start assist device may include a frame with a base and a longitudinal member. The longitudinal member may include a first pivot axis and a second pivot axis displaced from the first pivot axis. The device may also include a pedal arm with a pedal on a first end and a second end pivotally coupled to the first pivot axis of the longitudinal member. A swing arm may be provided with a handle receiver on a first end and a second end pivotally coupled to the second pivot axis of the longitudinal member. A connection link maybe used to connect the swing arm and the pedal arm, whereby a pull start handle of a powered tool may be supported by the handle receiver and the pedal displaced by the foot of a user, actuating the swing arm and starting the powered tool.

This present disclosure discloses an ignition overcurrent protection device, which includes a switch, a current detection circuit, and a controller. The switch is electrically coupled between a starting power and a power-on connector; the power-on connector is configured for connecting to the automotive power. The current detection circuit is configured for detecting a current value flowing between the starting power and the power-on connector. The controller is coupled to the switch and the current detection circuit. The controller is configured to determine a current range where the current value is located, and determine a preset time threshold corresponding to the current range, and control the switch to be turned off when a duration of the current value reaches the preset time threshold. The present disclosure also provides a starting power equipment and ignition overcurrent protection.

The portable generator is a portable electricity provisioning system that is adapted for use in generating electricity. The portable electricity provisioning system is mounted on a wheeled structure that allows the portable generator to be readily transported to locations where electricity is otherwise not available or is not adequate for the intended use. The portable generator is configured to provide electricity at 120 Vac, 12 Vdc and 5 Vdc and further comprises adequate energy reserves and connections to provide 625 amps at 12 Vdc for use in starting vehicles in maintenance situations. The portable generator comprises an inverter, a jump starting system, a plurality of ports, and a dolly.

The portable generator is a portable electricity provisioning system that is adapted for use in generating electricity. The portable electricity provisioning system is mounted on a wheeled structure that allows the portable generator to be readily transported to locations where electricity is otherwise not available or is not adequate for the intended use. The portable generator is configured to provide electricity at 120 Vac, 12 Vdc and 5 Vdc and further comprises adequate energy reserves and connections to provide 625 amps at 12 Vdc for use in starting vehicles in maintenance situations. The portable generator comprises an inverter, a jump starting system, a plurality of ports, and a dolly.

A vehicle electric power system for jumpstarting includes: an auxiliary battery; a first relay having a first end connected to the auxiliary battery; a power connecting terminal for jumpstarting being connected to an external power source when jumpstarting is initiated; a second relay having a first end connected to the power connecting terminal and a second end electrically connected to a second end of the first relay; and a reconnection switch having a first end connected both to the auxiliary battery and to the power connecting terminal and a second end connected to a control terminal used to turn on the first relay. The reconnection switch electrically connects the first and second ends thereof to each other in response to a reconnecting input signal, thereby applying external power to the control terminal, and turning on the first relay.

A portable or handheld device or apparatus for jump starting a vehicle engine having a depleted or discharged starting battery. The portable or handheld device or apparatus for jump starting a vehicle engine includes a rechargeable lithium-ion (Li-ion) battery pack and a battery cell equalization circuit configured to prevent overcharging of one or more individual lithium-ion battery cells, which can cause fire, damage to the battery pack and device or apparatus for jump starting a vehicle, or personal injury to a user.

A portable or handheld device or apparatus for jump starting a vehicle engine having a depleted or discharged starting battery. The portable or handheld device or apparatus for jump starting a vehicle engine includes a rechargeable lithium-ion (Li-ion) battery pack and a battery cell equalization circuit configured to prevent overcharging of one or more individual lithium-ion battery cells, which can cause fire, damage to the battery pack and device or apparatus for jump starting a vehicle, or personal injury to a user.