The escalating integration of electric vehicles (EVs) into the transportation sector poses a formidable challenge for electric grid management, potentially precipitating a substantial upsurge in electricity demand. Technologies such as Grid-to-Vehicle (G2V) and Vehicle-to-Grid (V2G) present innovative avenues to mitigate these challenges by enabling EVs to function interactively with the grid. These interactions can range from basic load balancing, where EVs absorb excess production during off-peak hours, to more complex functions like providing frequency regulation services during peak times. In this detailed review, we delve into the intricacies of electric grid dynamics in the presence of EV charging stations and the dual functionalities of G2V and V2G technologies. We scrutinize the potential and impediments of these technologies, considering how they can be harnessed to bolster grid resilience and efficiency. Particular attention is paid to the role of bidirectional battery chargers in EVs, which are pivotal for G2V, V2G, and even Vehicle-to-Home (V2H) applications. These chargers are designed to draw energy from the grid, maintaining a sinusoidal current and unity power factor during G2V charging mode, thereby optimizing the charging process and minimizing grid disturbance. Conversely, in V2G mode, these chargers enable the reversal of energy flow, permitting the discharge of stored battery energy back to the grid. This bidirectional flow not only enhances the grid's stability by offsetting demand fluctuations but also paves the way for EVs to become active energy management participants within the smart grid framework