Instrument handle for use with interchangeable batteries

A battery diagnostic handle for use in powering an instrument, and which is adapted to operate with either a rechargeable battery or non-rechargeable cells each having terminals of opposite polarities disposed at proximal and distal ends thereof, that comprises

• a hollow member that is closed at a proximal end thereof by an end cap having an electrical ground resiliently biased into contact with a proximal terminal of a battery contained in said hollow member, said hollow member being capable of interchangeably housing either a rechargeable battery or a stack of non-rechargeable cells
• a first adaptor means, for use when said non-rechargeable cells are used, and a second adaptor means, for use when said rechargeable battery is used, interchangeably mountable on a distal end of said hollow member,
• a connector housing removably attached to either of said adaptors for removably mounting an instrument head to said hollow member, said connector housing containing an axially elongated connector probe,
• said first adaptor means having positioning means for receiving a distal portion of a non-rechargeable cell contained in said hollow member and a central opening through which said connector probe makes contact with a distal terminal of a non-rechargeable cell positioned in said first adaptor means,
• said second adaptor means including a contact pad for contacting a distal terminal of a rechargeable battery contained in said hollow member and means for receiving said connector probe and electrically connecting said connector probe to said pad, ac to dc converter means electrically coupled to said pad, a pair of prongs connected to a primary side of said converter means and extending distally on either side of the connector probe whereby the handle can be plugged into a conventional outlet, when it is detached from the connector housing, to recharge said rechargeable battery.