Gel polymer electrolyte (GPE) was prepared by encapsulating organic electrolyte solution in acrylonitrile-methyl methacrylate-styrene(AMS) terpolymer and applied as a solid electrolyte material for lithium-ion polymer battery. The composite electrodes prepared with mesocarbon microbeads and LiNio(0.83)Co(0.17)O(2) active materials were used as anode and cathode, respectively, and cycling characteristics of these half-cells (Li/GPE/carbon and Li/GPE/LiNi0.83Co0.17O2) has been investigated using the AMS-based gel polymer electrolytes. The lithium-ion polymer battery employing a carbon anode, an AMS-based polymer electrolyte and a lithium-nickel-cobalt oxide cathode was assembled, and its charge/discharge cycling characteristics were investigated.