In order to increase motor vehicle endurance and improve battery charging problem, this study aimed to make two- power system by integrating the existing power system with hydrogen fuel battery. In addition, NI cRIO-9074 embedded system with Labview graphical interface programming language were used to monitor this system. Moreover, lithium manganese battery was used as a major power while hydrogen fuel power was used as a secondary power. The monitoring of state-of-charge (SOC) would also be tested when the secondary power provided stable electricity to recharge the major batteries in low speed driving. This study used vehicle dynamometer testing to achieve the general road conditions, and the PI controller automatically with ECE-40 and JP10 driving cycle. The results showed that ECE-40 and JP10 driving cycle process could be increased by 18% and 17% respectively under the condition of adding 200W of hydrogen fuel power. Long hours driving may result in mental fatigue as well as the loss of power by rapid acceleration while using manual driving. Therefore, it is important to design cruise control system in accordance with the driving speed of drivers’ needs. The system not only can reduce unnecessary emergency accelerating power, but also save energy consumption and achieve the effect of extended range. In the experiments, the use of cruise control to reduce motor energy consumption of 0.06% than without the use of cruise control.