Aim: The aim of this research is to improve the voltage of a battery in an electric vehicle by recommending Y sourced bidirectional DC-DC converter and compared it with delta sourced bidirectional DC-DC converter based electric vehicle battery system. Materials and Methods: The voltage of the battery with Y sourced bidirectional DC-DC converter and delta sourced bidirectional DC-DC converter is examined using 7 samples per group and duty cycles to analyze the battery voltage. Results: Based on the findings, it is inferred that the Y sourced bidirectional DC-DC converter has improved overall battery voltage 12.1845 V while the delta sourced bidirectional DC-DC converter has a battery voltage of 10.1826 V. The significance value is determined as 0.76 (p>0.05, statistically insignificant) based on SPSS analysis. Conclusion: Compared to a delta sourced bidirectional DC-DC converter, Y sourced bidirectional DC-DC converter provides a better battery voltage for the selected data.