The present study dealt with investigations on the effects of annealing on the hydrogen storage properties of La 1.6 Ti 0.4 MgNi 9 alloys. The experimental alloys were prepared by magnetic levitation melting followed by annealing treatment. For La 1.6 Ti 0.4 MgNi 9 alloys, LaNi 5 , LaNi 3 and LaMg 2 Ni 9 were the main phases, Ti 2 Ni phase appeared at 900 °C. Annealing not only enhanced the maximum and effective hydrogen storage capacity, improved the hydrogen absorption/desorption kinetics, but also increased the discharge capacity. The cyclic stability had been improved markedly by annealing, e.g., when the discharge capacity reduced to 60% of maximum discharge capacity, the charge/discharge cycles increased from 66 (as-cast) to 89 (annealed at 800 °C) and 127 times (annealed at 900 °C). La 1.6 Ti 0.4 MgNi 9 alloy annealed at 900 °C exhibited better electrochemical properties compared to the other two alloy electrodes.