A secondary battery includes an electrode group with both positive and negative electrodes and a separator interposed therebetween and a case wherein the electrode group is located. A cap assembly is combined with the case, seals it, and is electrically connected to the electrode group. Collecting plates are electrically connected to the uncoated region of the positive and negative electrodes. The respective collecting plates have a plurality of holes thereon, and may be located at both the top and the bottom of the case so that electrolyte infusion can be rapidly and easily performed.