Alligator clips are elastic metal clips with multiple serrated jaws used to establish temporary electrical connections. People named it because it looks like the mouth of a crocodile. It is used to connect cables to batteries or some other components. In laboratory research or when used by some electronic hobbyists, these clamps are usually crimped or soldered to the cable, and they become the connection between the test circuit and the laboratory equipment or other circuits.

Another larger clip, called a car clip or battery clip, is usually made of pure copper with low resistance and is used with insulated cables to establish the connection between car batteries. These currents can directly supply power to the car’s starter motor, which is an indispensable tool for car repairers.