With the advancement of electric vehicle (EV) adoption, significant advantages can be realized, including the reduction of greenhouse gas emissions and the alleviation of fossil fuel depletion. Various factors driving the shift to EVs are analysed, including advancements in battery technology, supportive government policies, and increased consumer demand. EVs are powered by batteries and are expected to play an important role in the development of a more sustainable future. The battery is the most crucial component of EVs, so it must be taken good care of. Nowadays, lithium-ion (Li-ion) batteries are the primary choice for EVs power supply as there are many advantages of Li-ion batteries like the energy density of it is very high. As the capacity increases, the battery in the parallel increases. Due to difference in internal resistance within the battery pack, the charging and discharging current are not balanced which causes power split in the electric vehicle. In the context of this paper, a sophisticated balancing method is introduced to balance the current and eliminate the power split between the battery packs. In this scheme, a variable resistance is added in series with cell/pack to balance the current. And once the current is balanced, then the power can be balanced. Using MATLAB/Simulink, the algorithm is executed on the five parallel-connected batteries to simulate and verify the procedure. The simulation findings demonstrate that the current is balanced. It improved battery performance.