Electrical testing device with probe having portions with different cross-sectional areas

A method of using a device for testing a voltage level in an electrical terminal cavity, the method comprising:

• contacting the electrical terminal cavity with the device, wherein the device comprises:
• a testing body;
• a probe for contacting the electrical terminal cavity wherein the probe is conductive, the probe comprising:
• a tip portion configured to contact the electrical terminal cavity, wherein the tip portion comprises a first cross-sectional area along a length of the tip portion, and wherein the first cross-sectional area is substantially constant along the length of the tip portion;
• a base portion configured to connect the probe to the testing body, wherein the base portion comprises a second cross-sectional area along a length of the base portion, and wherein the second cross-sectional area is substantially constant along the length of the base portion;
• an intermediate portion extending from the tip portion to the base portion, wherein the intermediate portion comprises a third cross-sectional area along a length of the intermediate portion, wherein the third cross-sectional area is substantially constant along the length of the intermediate portion, wherein the first cross-sectional area is smaller than the third cross-sectional area, wherein the third cross-sectional area is smaller than the second cross-sectional area, and wherein the intermediate portion is concentric with the tip portion and the base portion;
• and
• an axis extending between a center of the tip portion, a center of the intermediate portion, a center of the base portion, and a center of the testing body;
• and
• a circuit disposed within the testing body, wherein the circuit is operatively coupled with the probe such that circuit is configured to sense the voltage level in the electrical terminal cavity,
• wherein the first cross-sectional area, the second cross-sectional area, and the third cross-sectional area each increase electrical connection surface area between the probe and the electrical terminal cavity.