Present paper describes electrochemical performance of the all solid-state lithium polymer battery (LBP) using spinel-type Li4/3Ti5/3O4 which has been known as the potential candidate of anode materials. The assembled LPB with Li|solid polymer electrolyte(SPE)|Li4/3Ti5/3O4 construction showed stable charge–discharge cycles more than 300 times at 1C condition. On the other hand, strong charge–discharge rate dependence for the specific capacity and initial capacity loss was indicated. Such a poor rate performance stemmed from low diffusivity of Li+ ion in the by-products produced by the decomposition of SPE components at the SPE|Li4/3Ti5/3O4 interface.