NOVELTY - A protection circuit module (PCM) insert injection mold comprises a plate which has electrically connected protection circuit plate, connection terminals and optionally leads and which is inserted into an inner space of a mold; and a molten resin injected into the inner space of the mold such that the leads or the connection terminals are partially exposed to the outside.    USE - For preparing a lithium ion secondary battery or a lithium ion polymer secondary battery (claimed).    ADVANTAGE - The PCM can be molded using general resins. It is electrically stable. It does not require a coating step for preventing short circuits. It is rarely electrically damaged. Where failures of the PCM are generated, the PCM is easily separated from the battery and then repaired. A battery cell and a circuit portion are separately prepared so that productivity is improved. The PCM is molded separately from the battery cell to solve stability problems of the battery generated when heat or physical pressure is applied to the battery cell in case where the battery cell and the PCM are simultaneously molded and to prevent failures of products generated from a mold having a designated size for fixing the battery cell due to a tolerance of the size of the battery cell.    DETAILED DESCRIPTION - A protection circuit module insert injection mold is prepared by inserting a PCM (26) into an inner space of a mold. The PCM comprises a plate (21) having a protection circuit (22), connection terminals (24a, 24b) and optionally leads. The protection circuit plate, connection terminals and leads are electrically connected. A molten resin is injected into the inner space of the mold such that the leads are partially exposed to the outside where the PCM includes the leads or such that the connection terminals are partially exposed to the outside where the PCM does not include the leads.    An INDEPENDENT CLAIM is also included for a method for preparation of a battery comprising preparing a PCM insert injection mold (20); and directly connecting the exposed parts of the connection terminals to the corresponding electrode terminals (11a, 11b) of a battery cell (10) or connecting the connection terminals to the corresponding electrode terminals of the battery cell via the leads of which are partially exposed from the bottom of the PCM insert injection mold.    DESCRIPTION OF DRAWING(S) - The figure shows an exploded perspective view of a battery of the invention.    Battery cell (10)    Electrode terminals (11a, 11b)    PCM insert injection mold (20)    Plate (21)    Protection circuit (22)    External input/output terminal (23)    Connection terminals (24a, 24b)    Safety component (25)    PCM (26)