Abstract: A handheld device for jump starting a vehicle engine includes a rechargeable lithium ion battery pack and a microcontroller. The lithium ion battery is coupled to a power output port of the device through a FET smart switch actuated by the microcontroller. A vehicle battery isolation sensor connected in circuit with positive and negative polarity outputs detects the presence of a vehicle battery connected between the positive and negative polarity outputs. A reverse polarity sensor connected in circuit with the positive and negative polarity outputs detects the polarity of a vehicle battery connected between the positive and negative polarity outputs, such that the microcontroller will enable power to be delivered from the lithium ion power pack to the output port only when a good battery is connected to the output port and only when the battery is connected with proper polarity of positive and negative terminals.

Abstract: A rechargeable battery jump starting device with a dual battery diode bridge system. The dual battery diode bridge, for example, is configured to protect against a back-charge to a first 12V battery and/or a second 12V battery after a vehicle has been jump charged to prevent damage thereto.

Abstract: An electric vehicle (EV) charging station for fast charging (e.g. 5 to 15 minutes) an electric vehicle (EV). The EV charging station can be configured to charge multiple EVs and multiple conventional vehicles at the same time. The EV charging station can include a power source, an electric reservoir receiving power from the power source, an AC to DC power converter for receiving AC power from the power source and converting the AC power to DC power for supplying DC power to the electric reservoir, an EV charger receiving DC power from the electric reservoir; and a first DC to DC converter receiving DC power from the electrical reservoir and converting the DC power to DC power suitable for charging the electrical vehicle.

Abstract: A rechargeable battery jump starting device with a leapfrog charging system. The leapfrog charging system, for example, can sequentially charge multiple batteries of the rechargeable battery jump starting device. For example, the rechargeable battery jump starting device is a portable rechargeable battery jump starting device configured for jump starting automobiles, heavy equipment, commercial vehicles, commercial equipment, trucks, buses, commercial trucks, front loaders, dozers, back hoes, excavators, rollers, fork lift, specialized commercial equipment, logging equipment, airplanes, jets, and other battery started vehicles and equipment.

Abstract: A rechargeable battery jump starting device having a highly conductive electrical pathway from a rechargeable battery of the device to a vehicle battery being jump started. The highly conductive pathway can be provided by a highly electrically conductive frame connecting one or more batteries of the rechargeable battery jump starting device to battery clamps of the rechargeable battery jump starting device.

Abstract: A battery management system (BMS) having a printed circuit board (RGB) with a diagonal arrangement for use in a Li-ion battery, a Li-ion battery having a battery management system (BMS) having a printed circuit board (RGB) with a diagonal arrangement, and a BMS having a printed circuit board with diagonal arrangement method.

Abstract: An electrical port device having an electrical port and a cap or cover removable connected to the electrical port having a plug. A Y-shaped electrical cord or cable connects the electrical port to a pair of electrical receptacles. The Y-shaped electrical cord can include one electrical cord or cable section connected to the electrical port, a pair of electrical cord or cable sections connected to the pair of electrical receptacles, and a Y-shaped connector connecting the one electrical cord or cable section and the pair of electrical cord or cable sections. Further, the cap or cover and the electrical port have cooperating sealing surfaces to ensure watertight or waterproof sealing when the cap or cover is installed “on” the electrical port to prevent water or moisture reaching the plug.

Abstract: A battery clamp having a first inner metal battery clamp member having a handle portion and a clamp portion, a second inner metal battery clamp member having a handle portion and a clamp portion, a first outer insulating battery clamp member having a handle portion and a clamp portion connected to the first inner metal battery clamp, and a second outer insulating battery clamp member having a handle portion and a clamp portion connected to the second inner metal battery clamp. The first inner metal battery clamp member and/or the second inner metal battery clamp member having an inclined connection plate for connection with a battery cable, the inclined connect plate configured to allow a user to access the inclined access plate with a tool while avoiding interference with the handle portions of the battery clamp.

Abstract: A battery clamp having a first inner metal battery clamp member having a handle portion and a clamp portion, a second inner metal battery clamp member having a handle portion and a clamp portion, a first outer insulating battery clamp member having a handle portion and a clamp portion connected to the first inner metal battery clamp, and a second outer insulating battery clamp member having a handle portion and a clamp portion connected to the second inner metal battery clamp. The first inner metal battery clamp member and/or the second inner metal battery clamp member having a battery cable connector configured to allow a user to access the battery cable connector with the user's fingers or a tool while avoiding interference with the handle portions of the battery clamp.

Abstract: An electrical extension cord device having an electrical port at one end and an electrical connector at an opposite end. The electrical port can include a cap or cover removable connected to the electrical port having an electrical plug or receptacle. The cap or cover and the electrical port have cooperating sealing surfaces to ensure watertight or waterproof sealing when the cap or cover is installed “on” the electrical port to prevent water or moisture reaching the plug.

Abstract: A battery, for example, a rechargeable battery (e.g. lithium ion battery) having a casing with battery terminals. The casing, for example, includes an upper section, middle section, and lower section connected together. The battery can be connected to one or more battery trays having the same height or different heights for various applications.

Abstract: Disclosed herein are a rechargeable battery jump starting device with a control switch (e.g. rotary control switch) and an optical position sensing switch system to determine a position of the control switch. The optical position sensing switch system includes an optical position sensor using optical coupling to insure an integrity of isolation on a 12V to 24V master switch to allow for a safe and effective operation, and configured so that a microcontroller unit reads a position on the master switch.

Abstract: An electrical port device having an electrical port and a cap or cover removable connected to the electrical port having a plug. An electrical cord or cable or cable section connects the electrical port to an electrical cord or cable or cable connector or splitter into a pair of electrical cord or cable or cable sections each provided with an electrical receptacle. Further, the cap or cover and the electrical port have cooperating sealing surfaces to ensure a tight waterproof sealing when the cap or cover is installed on the electrical port to prevent water or moisture reaching the plug.

Abstract: An electrical port device having an electrical port and a cap or cover removable connected to the electrical port having a plug. The cap or cover and the electrical port have cooperating sealing surface to ensure a tight waterproof sealing when the cap or cover is installed on the electrical port to prevent water or moisture reaching the plug.

Abstract: An electric vehicle (EV) charging station for fast charging (e.g. 5 to 15 minutes) an electric vehicle (EV). The EV charging station can be configured to include one or more energy storage device comprising multiple electric reservoir modules.