Metal hydride systems are applicable as energy-conversion devices, such as heat pump, cooling machines and heat transformers. In this study there is an interest in metal hydride heat pump. The unit cell consist of a AB5-type alloy and a reactor composed of thin corrugated stainless steel plates brazed with copper. For obtaining the desired output water temperature (80 ℃) the unit cell is investigated with factors such as the flow rate of water and the input medium temperature. This results are found that the flow rate of water is 0.1l/min and the input medium temperature 65 ℃.