PURPOSE: To surely supply a required quantity to a negative electrode can, and improve the productivity by using a preliminarily granularly molded lithium or lithium-contained alloy as negative electrode material, and supplying the weight portion corresponding to a required electric capacity as the negative electrode material quantity for one negative electrode can.

CONSTITUTION: A granular negative electrode material 1 is supplied through a chuter 2, and a negative electrode can 3 is continuously sent in the aligned slate to this feeding point, and the respective feeding states are controlled in such a manner that the granular negative electrode material 1 is supplied to the negative electrode can 3 for the weight portion corresponding to a required electric capacity. The negative electrode can 3 to which the negative electrode material 1 of the required weight portion is sent to the following process, the negative electrode material 1 is crushed into a prescribed dimension and pressure-connected to the negative electrode can 3 by a pressure connecting bar 4 to provide a required negative electrode.