Lithium-based battery pack for a high current draw, hand held power tool

  • US 7,944,173 B2
  • Filed: 12/09/2008
  • Issued: 05/17/2011
  • Est. Priority Date: 11/22/2002
  • Status: Active Grant
First Claim
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1. A rechargeable battery pack for powering a high current draw hand held power tool, the battery pack comprising:

  • a housing connectable to and supportable by the hand held power tool;

    a plurality of battery cells supported by the housing, the battery cells being capable of producing an average battery pack discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry;

    at least one terminal through which the battery pack discharge current flows, the at least one terminal connectable to at least one corresponding terminal of the hand held power tool; and

    a locking assembly operable to lock the housing to the hand held power tool.

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