This battery-grade electrolyte solution, consisting of 1M LiTFSI in a 1:1 volume mixture of DME and DOL (dioxolane), is designed for lithium-sulfur batteries. It facilitates efficient lithium-ion conduction with high ionic conductivity, enabling stable cycling and high sulfur utilization while mitigating the polysulfide shuttle effect. The ether-based solvents provide low viscosity for better wetting and compatibility with lithium metal anodes, enhancing safety and performance in next-generation rechargeable batteries for electric vehicles and portable electronics.