NOVELTY - The secondary battery (20) has an electrode assembly with a separator that is located between positive and negative electrode plates. The positive and the negative electrode plates have a coated portion and a non-coated portion respectively. A case houses the electrode assembly to which positive and negative electrode current collectors are electrically coupled. A retainer which is coupled to the electrode assembly and to a positive current collector fixes the positive current collector to the electrode assembly.    USE - Secondary battery such as rechargeable battery used as energy source in battery module (claimed) of mobile device, electric car, hybrid car, electric bicycle, and uninterruptible power supply.    ADVANTAGE - The electrode assembly functioning as a power generation device is prevented from being damaged, so that the electrical connection of the electrode assembly is stabilized. A retainer is provided for fixing an electrode assembly, so that the structural rigidity capable of withstanding external vibration or impact can be obtained, thus the durability and reliability of a product are improved. The electrode assembly is fixed to an electrode current collecting portion, so that the electrode assembly is prevented from moving and being damaged, thus electrical connection of the electrode assembly is stabilized. The electrode assembly is provided with gas discharging hole that provides a discharging path of gas generated in the electrode assembly, and thus a risk of explosion due to accumulation of gas pressure is reduced. Since the distance or width of the accommodation portion decreases in a direction away from the tertiary rib, a coupling strength between the electrode current collecting member and the electrode assembly are improved.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for battery module.    DESCRIPTION OF DRAWING(S) - The drawing shows the perspective view of the battery module with several secondary batteries.    Secondary battery (20)    Positive electrode terminal (21)    Negative electrode terminal (22)    Washer (24)    Upper gasket (25)