N-Butyl-N-methylpyrrolidinium tetrafluoroborate is widely used as an ionic liquid in various electrochemical applications. Its high ionic conductivity and stability make it suitable for use in batteries, particularly in lithium-ion and supercapacitors, where it enhances performance and safety. It is also employed in electroplating processes to improve the quality and efficiency of metal coatings. Additionally, this compound is utilized in organic synthesis as a solvent or catalyst, enabling greener and more efficient chemical reactions. Its thermal stability and low volatility further make it valuable in high-temperature applications and as a heat transfer fluid in industrial systems.