Battery device and electronic equipment employing the battery device as power source

A battery pack comprising

• a housing unit having a cell housing unit,
• a plurality of cells housed within said cell housing unit,
• first and second grooves formed on both lateral surfaces of the cell housing unit extending parallel to the direction of insertion of the housing unit into an electronic device,
• wherein said first and second grooves extend into a forward end face of the cell housing unit in the direction of insertion, and
• a third groove in said cell housing unit extending parallel to said first and second grooves,
• wherein said third groove extends into said forward end face of the housing unit.

A battery pack comprising

• a housing unit having a cell housing unit,
• a plurality of cells housed within said cell housing unit, and
• first and second grooves formed on both lateral surfaces of the cell housing unit extending parallel to the direction of insertion of the housing unit into an electronic device,
• wherein said first and second grooves extend into a forward end face of the cell housing unit in the direction of insertion,
• wherein a hole is formed in a portion of the forward end face of the housing unit along the direction of insertion not faced by the end faces of the cells housed within the housing unit.

A battery pack comprising

• a housing unit having a cell housing unit,
• a plurality of cells housed within said cell housing unit, and
• first and second grooves formed on both lateral surfaces of the cell housing unit extending parallel to the direction of insertion of the housing unit into an electronic device,
• wherein said first and second grooves extend into a forward end face of the cell housing unit in the direction of insertion, and
• wherein the cell housing unit is dimensioned to hold four tubular cells in juxtaposition in parallel in vertical and transverse directions.

An electronic device comprising:

• a main body of the electronic device;
• a casing which includes a battery loading section dimensioned to hold a battery pack which has first and second grooves on opposite lateral surfaces thereof extending parallel to the direction of insertion of the battery pack into the battery loading section;
• first and second ribs on opposite inner lateral sides of the battery loading section for engaging the first and second grooves of the battery pack;
• and
• a third rib formed on a surface of the battery loading section extending parallel with the first and second ribs for engaging a third groove formed in a surface of the housing unit of the battery pack.

An electronic device comprising:

• a main body of the electronic device;
• a casing which includes a battery loading section dimensioned to hold a battery pack which has first and second grooves on opposite lateral surfaces thereof extending parallel to the direction of insertion of the battery pack into the battery loading section;
• first and second ribs on opposite inner lateral sides of the battery loading section for engagement by the first and second grooves of the battery pack;
• and
• an engagement boss for engaging a hole formed in a forward end face of the battery pack is formed on an end face of the battery loading section lying in the inserting direction of the battery pack.