CHARGING AND DISCHARGING DEVICE FOR SECONDARY BATTERY

A charging and discharging device for secondary battery according to an embodiment of the present disclosure includes a body portion; and a head portion located under the body portion, wherein the head portion comprises a pin mounting portion that is bound to the upper portion or lower portion of the secondary battery, wherein the pin mounting portion includes a current pin and a voltage pin, wherein the current pin and the voltage pin each comprises a plurality of projections, and wherein an area where the current pin is formed is larger than an area where the voltage pin is formed.