The conversion-based BiF3 is a promising cathode material for lithium-ion batteries due to its high theoretical capacity (302mAhg−1). Nanocomposites of BiF3 and carbon (BiF3/C) are known to improve the electrochemical performance by increasing the electronic conductivity of the electrode. Here we investigate the electrochemical performance of BiF3/C at high C-rates. In particular, we newly investigate the difference of high C-rate performance between discharge and charge reactions. The discharge and charge capacities in the first cycle were almost the same at 0.1C. In contrast, the discharge capacity was higher than charge capacity at 10C. Further, during cycling at 10C, the charge capacity drastically decreased, but the discharge capacity remained high. The rate performance of the discharge reaction was higher than that of the charge reaction, especially after cycling.