Cockroft-Walton (CW) is a voltage multiplier (VM) circuit with an alternating current (AC) input to generate a direct current (DC) output. The CW circuit consists of several stages. Each stage, there are two diodes and capacitors to shift the AC input to be DC output. The maximum output of CW is the multiplication of two and number of stages, then the multiplied result times the peak voltage of AC input to obtain the DC voltage. However, the DC output contains ripple voltage. Therefore, the work within this study discusses five stages CWVM to ensure that it can effective as a power supply for the electric vehicle. We develop CWVM with the output of the multiplication between two and input peak voltage. To reduce the ripple voltage, we implement a capacitor filter in the simulation for verifying the results. Also, we simulate the output voltage by considering the results for each stage. The results indicate that the developed CWVM is reasonable to be a power supply for the electric vehicle.