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A battery pack has a housing with a plug portion mateably receivable in a socket of a battery-powered power hand tool on which the battery back is designed to be mounted. The battery pack also has a connector cable with a connector plug at its distal end mateably receivable in the tool socket so tha

A battery pack has a housing with a plug portion mateably receivable in a socket of a battery-powered power hand tool on which the battery back is designed to be mounted. The battery pack also has a connector cable with a connector plug at its distal end mateably receivable in the tool socket so that the battery pack can be disposed remotely from the tool. The battery pack can be mounted on tools with which it does not mate by use of an adapter having a plug portion mateably receivable in the tool socket, and an adapter socket mateably receiving the battery pack plug portion. Multiple battery packs may be interconnected on a wearable carrier and connected to the tool by a cable with a plug connector.

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1. A battery pack comprising:a small portable housing of a size adapted to be mounted on a power hand tool, a battery disposed in the housing and having positive and negative terminals, a plug portion projecting from the housing and adapted to be received in a socket portion in an associated power h

1. A battery pack comprising:a small portable housing of a size adapted to be mounted on a power hand tool, a battery disposed in the housing and having positive and negative terminals, a plug portion projecting from the housing and adapted to be received in a socket portion in an associated power hand tool, first connector terminals on the plug portion respectively connected to the battery terminals, a cable connectable to the battery terminals and extending outside the housing to a distal end, and a plug connector having second Connector terminals connected to the distal end of the cable and adapted to be received in the socket portion in the associated power hand tool.