NOVELTY - The battery module (100) comprises a power source sign or character for positive amount and negative nature on a display unit (111) which is formed on a protrusion. A front side case (11) is kept in a battery cell (10) which has a battery tap formed in the inner side of battery cell. The battery tap inputs and outputs the power source of negative nature and positive amount. The front side case and a rear case are made of extroverted metal plates. The cell has a single unit case with a banding groove (12) developed at the front side case and both sides of the rear case with introversion.    USE - Battery module for high capacity battery for electric vehicle.    ADVANTAGE - The battery module has a simple configuration where the cells are detachably inserted in anyone of the front side and rear surface. The case of the cell is ordered with intagliation in the intaglioed part of the case to arrange the cells, thus the number of part of the cell is reduced and the number of process is reduced in assembly. Therefore, the module is improves the productivity and cost-cutting of the manufacturing cost. The battery tap is protruded to the upper side of case to indicate the character for polarity. The sign for reciprocity or the advertisement or the character is easily entered which contemplate the convenience of the operator. The battery module enables the heat radiation due to multiple protrusions formed in the single unit case in the battery cell. The assembly of the cells is made in a way so that even if the heat is generated between the cells, it is not necessary to include any separate heat radiator. The protective plate in the upper side of the extending region of the battery tap and protective cap prevents the generation of short by any external conductor. The protection element with the protection circuit is additionally installed at the printed circuit board which prevents the malfunction due to the confusion signal like the overvoltage and thus, the life span of the battery module is prolonged.    DETAILED DESCRIPTION - A protective plate (60) made of an insulating material covers the upper side of the battery tap and a protective cap (50) with insulating material covers the whole upper surface of the cell. A protection element with a protection circuit formed on a printed circuit board through which the overvoltage is applied to a conductive metal board of the battery tap.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a battery module.    Battery cell (10)    Front side case (11)    Banding groove (12)    Protective cap (50)    Protective plate (60)    Battery module (100)    Display unit (111)