NOVELTY - Rechargeable battery includes a terminal groove formed on top of a terminal through-hole to house an electrode terminal; a protective device groove spaced at a predetermined distance from the terminal groove; and protective device housed in the protective device groove with one end connected to the top surface of the electrode terminal.    USE - The battery is used for powering lightweight portable wireless electronic devices, e.g. video cameras, mobile telephones, and portable computers.    ADVANTAGE - The inventive rechargeable battery has an improved mounting structure for an electrode terminal and a second protective device used in the battery, thus ensuring the stability of the battery. The second protective device quickly interrupts electric current between electrode terminal and the protective circuit thus eliminating problems associated with overcharge or over discharge of the rechargeable battery, e.g. preventing battery explosion due to an excessive pressure increase inside the battery or other malfunctions of the battery, thus guaranteeing the safety of the battery. It prevents the injection pressure of the resin from directly releasing to the safety vent, thus avoiding any damage to the safety vent.    DETAILED DESCRIPTION - Rechargeable battery comprises:    (A) electrode assembly (210) having two electrode plates (215, 213) and a separator (214), all of which are wound together;    (B) can (200) for housing the electrode assembly;    (C) cap assembly (300) having a cap plate (310) for sealing a top opening of the can and an electrode terminal (320) that is inserted into a terminal through-hole (312) formed on the cap plate;    (D) terminal groove (314) formed on top of the terminal through-hole to house the electrode terminal;    (E) protective device groove (316) spaced at a predetermined distance from the terminal groove; and    (F) second protective device (330) housed in the protective device groove with one end connected to the top surface of the electrode terminal.    DESCRIPTION OF DRAWING(S) - The figure is a partial sectional view showing a bare cell.    Can (200)    Electrode assembly (210)    Separator (214)    Electrode plates (215, 213)    Cap assembly (300)    Cap plate (310)    Terminal through-hole (312)    Terminal groove (314)    Protective device groove (316)    Electrode terminal (320)    Second protective device (330)