Dual voltage battery tester

An apparatus adaptable for alternatively testing a battery shaped as a cylinder, wherein the cylindrical battery has a first pole and a second pole disposed on opposite ends of the cylinder, and a battery shaped as a rectangular parallelepiped, wherein the rectangular battery has a first pole and a second pole disposed on the same face of the parallelepiped, comprising:

• a base;
• means on said base for establishing electrical contact with the first pole of a cylindrical battery placed thereon;
• a hollow stem connected to said base having a lower end and an upper end, said stem defining a receiving chamber in said lower end;
• a plunger positioned in said receiving station in axial sliding contact with said stem;
• resilient means urging said plunger toward an uppermost position;
• a horizontal arm connected to an upper end of said plunger and extending over said base;
• a terminal on said horizontal arm and in electrical contact therewith, said terminal including a resistive body formed of a semiconductor material having an upper metallic end and a lower metallic end, whereby said upper metallic end is in electrical contact with said horizontal arm and said lower metallic end is placed into electrical contact with the first pole of a rectangular battery when said center contact of said test lamp is placed into electrical contact with the second pole of the rectangular battery when said horizontal arm is moved downwardly;
• a test lamp on said horizontal arm and in electrical contact therewith;
• and
• means on said horizontal arm for establishing electrical contact between said terminal and a first pole of a rectangular battery placed on said base and for establishing electrical contact between a center contact of said test lamp and a second pole of a cylindrical or rectangular battery placed on said base;
• said base, said stem, said plunger, and said horizontal arm comprising an electrically conductive material whereby the downward movement of said horizontal arm, carried by said plunger, creates an electrical circuit between the cylindrical or rectangular battery being tested and said lamp for testing the output of the battery.