The key of power connector design lies in the contact point formed by female terminal and male pin. If the design, process and selection of materials, plating, can cause contact points are not ideal or can not form a contact point. On the contrary, excessive positive clamping force will lead to excessive wear on the electroplated surface of the connector and reduce its mechanical life, that is, the connector plug and pull times. Contact design has lathe circular needle and terminal, stamping terminal and so on.