Abstract: A jump starter for charging or boosting a depleted or discharged battery, the jump starting device, including a rechargeable battery; a positive battery connector for connecting the jump starting device to a positive terminal of the battery; a negative battery connector for connecting the jump starting device to a negative terminal of the battery; a power switch for connecting the rechargeable battery to the depleted or discharged battery when connected to the jump starting device during charging operation of the depleted or discharged battery; a first detector for detecting presence of the depleted or discharged battery connected to the positive and negative battery connectors; and a second detector for detecting presence of the depleted or discharged battery connected to the positive and negative battery connectors.

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: Provided is a jump starting device for charging a depleted discharge battery, the device includes a rechargeable battery having a positive terminal and negative terminal; a switch comprising a jump start current sharing circuit electrically connected to the rechargeable battery; and a battery clamp electrically connected to the jump start current sharing circuit.

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.