A new type of concentrated electrolyte composed of Li(FSO2)N(SO2CF3) (LiFTFSI), LiN(SO2F)2 (LiFSI), and ether solvents can improve the cycling stability of lithium (Li) metal and inhibit Li‐metal dendritic growth. The high average coulombic efficiency of >95 % and excellent cycling performance of >250 cycles for the Li|copper cells have been achieved, even at a high current density of 3 mA cm−2. Moreover, the Li|LiFePO4 cell exhibits superior cycling stability with capacity retention of >92 % at 0.2 C for more than 200 cycles and excellent C‐rate capability. Exhibitionist! A concentrated electrolyte based on a salt of LiFTFSI for application in rechargeable Li batteries can improve the cycling stability of Li metal and inhibit Li‐metal dendritic growth. The Li|Cu cell displays a high average coulombic efficiency and excellent cycling performance, even at a high current density. Moreover, the Li|LiFePO4 cell exhibits superior cycling stability with capacity retention of >92 % at 0.2 C for more than 200 cycles and excellent rate capability.