Abstract: A portable jump starter and air compressor device, including a jump starter, air compressor, and/or vacuum cleaner. One or more of the jump starter, air compressor, and/or vacuum cleaner are powered a same or different one or more rechargeable batteries (e.g. one or more Li-ion batteries). The air compressor, for example, includes a piston/valve arrangement configured to allow a piston of the piston/valve arrangement to move in close proximity to a cylinder head of the cylinder of the air compressor.

Abstract: A battery balancing method and system for charging multiple batteries connected together in an electrical series string with a single electrical charger. For example, the battery balancing method and system utilizes the battery management system (BMS) of the individual batteries for providing battery balancing of the multiple batteries connected together in the electrical series string when charging the series string with the single electrical charger.

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: Provided is a trailer breakaway device for use with a vehicle/trailer having a vehicle/trailer brake, a vehicle/trailer electrical power supply, and a vehicle/trailer electrical ground, the trailer breakaway device including one or more rechargeable lithium battery cells; a battery management system (BMS) connected to the one or more rechargeable lithium battery cells; a charger connect to the vehicle/trailer power supply, the charger configured to receive power from the vehicle/trailer power supply; a current limiter connected to the one or more rechargeable lithium battery cells; and a breakaway switch connected to the current limiter.

Abstract: Provided is a method of charging a deeply discharged battery using a battery charging device, the method including measuring the output voltage of the deeply discharged battery using the battery charging device, and if the output voltage is at or near zero (0) volts, charging the deeply discharged battery using the battery charging device in a forced mode.

Abstract: Provided is a method of charging a deeply discharged battery using a battery charging device, the method including measuring the output voltage of the deeply discharged battery using the battery charging device, and if the output voltage is at or near zero (0) volts, charging the deeply discharged battery using the battery charging device in a forced mode.

Abstract: Provided is a lithium ion rechargeable battery charging system with lithium cell balancing, including a lithium ion rechargeable battery and a battery charging device configured for charging the lithium ion rechargeable battery and wherein cell balancing of the lithium ion rechargeable battery cells of the lithium ion rechargeable battery continues for a predetermine period of time once a cell balancing mode begins.

Abstract: A battery management system (BMS) having a printed circuit board (PCB) 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 (PCB) with a diagonal arrangement, and a BMS having a printed circuit board with diagonal arrangement method.

Abstract: Provided is a universal serial bus (USB-C PD) connector, including an oval-shaped plug having an end face, the end face having an oval-shaped outer rim, an oval-shaped recess located within the oval-shaped outer rim, an oval-shaped inner protrusion located within the oval-shaped recess, and an oval-shaped inner recess disposed within the oval-shaped inner protrusion, wherein the oval-shaped inner recess is provided with one or more electrical conductors.

Abstract: A battery charging device for charging a discharged or depleted battery, the device including one or more temperature sensors for measuring or approximating a temperature of the discharged or depleted battery and a controller receiving input signals from the one or more temperature sensors for compensating a charging operation of the battery charging device.

Abstract: Provided is a MOSFET device for use with a printed circuit board (PCB) of a battery management system (BMS), the device including a semiconductor body; a metal conductor extending outwardly from a side of the semiconductor body; a plurality of power pins extending outwardly from at least one side of the semiconductor body, the power pins having tips bent downwardly; a gate pin extending outwardly from at least one side of the semiconductor body, wherein the tip of the gate pin is raised or elevated relative to the tips of the power pins so as to avoid electrical contact with the one of the spaced apart copper plates, and wherein the tip of the gate pin is connected to a circuit of the battery management system (BMS).

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.